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The quick way to find a local Cellar & Basement Conversion specialist in Knebworth, Hertfordshire

There are 289 Cellar & Basement Conversion specialists in Knebworth, and last month we helped homeowners get quotes for their home improvement jobs.

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Gurdev Lall

Cellar & Basement Conversion in Knebworth

I have been an electrician since 2008, I do have my 18th edition electrical installation certificate, and I can sign off electrical work. I am a very creative electrician with many great ideas on what will look good and what will look Great.

Latest homeowner review

Reviewed by Sarah on 21/4/2024

IBNCONSTRUCTION.LTD

Cellar & Basement Conversion in Knebworth

About Us: With many years of experience in the construction industry, we pride ourselves on delivering high-quality work, whether it’s a large or small project. From NHS centers and office buildings to home extensions, loft conversions, and everything in between, we handle it all. Our Services Include: • House Extensions • Loft Conversions • Kitchens and Bathrooms • Metal Zinc and Other Roof Installations • New Build -Plumbing, Painting, Tiling, Flooring, and more We never overlook the smaller jobs, ensuring that every project meets the same high standards of workmanship and quality. Our prices are competitive, and we provide numerous references from satisfied customers. Our Commitment We believe that customer satisfaction is the foundation of our success. By keeping our clients happy, we build lasting relationships and ensure continuous business growth. Free Quotations Available! Contact us today for a free quote and see how we can help bring your project to life. Thank you for considering us for your construction needs!

Latest homeowner review

Reviewed by Meet on 23/6/2020

We are really happy with garden service provided. They did an excellent job and also Illie suggested us few changes in our garden and we really liked it. We will definitely recommend them.

NELSON DAVIES

Cellar & Basement Conversion in Knebworth

Offering a wealth of property maintenance knowledge ranging from roofing to silicone installation. Fully trained in bricklaying/painting & decorating/project management among other things. All certification and insurance documents available if requested. I’m a fully established builder with a methodical attention to detail. I have a good imagination when it comes to designing landscapes or renovating inside of a property. I am literate in reading and running builds from architects drawings and can lay any type of drainage from engineers instructions.

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Reviewed by David on 28/4/2025

A trustworthy and reliable gentleman, and a highly experienced builder who has also helped me with house repairs

Jdprojects

Cellar & Basement Conversion in Knebworth

Jd projects have been going 28 years in the construction industry,we are a family run business operating from ruislip covering greater London and beyond. We specialise in all thing building from bathrooms to lofts fencing tiling and more. We would love to hear from you either it be a small job or large project expect a friendly timely quote. John Jdprojects

Latest homeowner review

Reviewed by Sam on 25/11/2025

TWC Real Estate Ltd

Cellar & Basement Conversion in Knebworth

My names Tom, I have been in the real estate sector for over 10 years and have done everything from general property maintenance, new bathrooms, painting/decorating, demolition contracts and most recently constructed 9 ultra high spec homes. High quality and impeccable workmanship are key values to me and ensuring the client is satisfied and more, with the work they are receiving. I am very well connected with all trades and can provide a top tier service for all types of project management no matter how big or small the job may be. I am also extremely capable at doing many manual labour jobs, but often favour a shorter timeline for my clients project completion and therefore prefer to draft in experienced trades to get the job completed. Above all I am very friendly, well spoken and always keen to deliver what is asked of me.

Latest homeowner review

Reviewed by Stephen on 1/11/2025

I can't recommend Tom highly enough. He's a lovely friendly chap and supremely good at what he does. He put up 4 pairs of new curtains and the poles as well as taking down the old ones. Everything is looking fab and perfectly positioned and the curtain poles will not be coming down in a hurry! Everywhere left spotless too. I'll definitely be in touch the next time I need work doing. Thanks Tom :-)

DRS GENERAL BUILDER

Cellar & Basement Conversion in Knebworth

DRS is a first-class expert company, providing superb high-quality construction services. The company has already gained regular clients’ recognition and a good reputation in the construction industry all over the UK. Our team meets the individual needs of each client and works towards the improvement of services.

Latest homeowner review

Reviewed by phil on 20/10/2025

Excellent from start to finish. Very professional, very communicative, on time high quality work with attention to detail. All trades well managed by Daniel. Everything left clean and tidy.

A A Buckingham Limited

Cellar & Basement Conversion in Knebworth

Skilled groundworker with over 25 years of varied experience, including block paving and drainage work.

Latest homeowner review

Reviewed by Carolyn on 6/11/2012

I would recommend Andy. He spent time evaluating the job required with a view to looking at less costly but effective options. Most of the time I was out at work, he called everyday when he was leaving to update me on progress. He communicated clearly and so there was no confusion with what the job involved and the final cost. He was also very nice to my dog. Thanks Andy.

Tony Gilbert Property Services

Cellar & Basement Conversion in Knebworth

Tony Gilbert property services, has been trading over 30 years. Also bringing in other sub-contractors ie electricians, gas safe plumbers, and various other trades undertaking a wide variety of works in the construction industry. working alongside various architects and building controls. Hopefully priding myself on happy clients, clean and tidy, high standards and reasonable pricing. Works carried out can be from simple maintenance works to extensions, refurbishment and new build properties etc. Thank you for taking the time to read a little bit about my profile. Please don’t hesitate to contact me.

Latest homeowner review

Reviewed by Gareth on 5/10/2024

Turned up got the job done, no hassle.

Imperium Build

Cellar & Basement Conversion in Knebworth

Small builder speacializing in extensions new builds an all building works steel works drainage

Latest homeowner review

Reviewed by Costas on 26/5/2024

Good clear & transparent communication, prompt & reliable, high quality work at a fair price - what more can I ask for. I highly recommend Danny. I would absolutely no hesitation in using Imperial Build again.

fair trade builders

Cellar & Basement Conversion in Knebworth

Fairtrade builders

Latest homeowner review

Reviewed by Steve on 29/9/2021

Had a quote for roof repair which included for 1 missing tile, re fitting existing tiles, repairing flashing and gutter cleaning did not accept quote. On advice from another roofer just had the one missing tile replaced since there was no evidence of any leaks inside the loft or 2nd floor ceilings.

D Grand Homes Ltd

Cellar & Basement Conversion in Knebworth

Welcome to D Grand Homes Ltd, a beacon of excellence in construction and home transformations with a legacy spanning over 14 years. Our skilled team prides itself on being respectful, polite, highly professional, efficient, and consistently meeting deadlines. We specialize in a wide array of services, including extensions, loft conversions, new builds, and comprehensive refurbishments. At D Grand Homes Ltd, we are committed to delivering a first-class finish to every project, showcasing a meticulous attention to detail that sets us apart. Whether you are envisioning a new living space, enhancing existing areas, or embarking on a full refurbishment, our team has the expertise to turn your vision into reality. What distinguishes us is not only our commitment to quality but also the scale of our capabilities. Our team, comprising up to 20 skilled professionals, is complemented by a network of reliable subcontractors specializing in plastering, landscaping, bricklaying, electricians, and more. This collaborative effort ensures that every aspect of your project is handled by experts in their respective fields, guaranteeing a seamless and top-tier outcome. Choose D Grand Homes Ltd for a transformative experience marked by skill, professionalism, and an unwavering commitment to excellence. Whether you're planning an extension, loft conversion, new build, or a comprehensive refurbishment, our team is ready to exceed your expectations.

Latest homeowner review

Reviewed by Aninda on 29/11/2016

Daniel provided a competitive quote. I wanted Howdens kitchen and he allowed me to directly deal with Howdens. So in effect I paid the Howdens trader price. The best part was for him to suggest some additional work which made a lot difference. I really appreciate him for that. He charged extra but it was worth it. Daniel and Team worked very professionally and finished the work as agreed. The most important is that Daniel is a good man. I will definitely call him for future work. Highly recommed

GM Construction

Cellar & Basement Conversion in Knebworth

Greetings! I'm George, the driving force behind GM Construction, a name synonymous with trust, quality, and a decade of experience across Europe – Hungary, Serbia, and Sweden. At GM Construction, we're dedicated to delivering top-tier services that redefine home improvement. Our Wide Range of Expertise: - Painting & Skimming - Plumbing, Electrical Work & Building Services - Bathroom and Kitchen Fitting - Driveway paving Our Promise: 1. Customer-Centric Approach: Your satisfaction is our utmost priority. 2. Team Excellence: Backed by a skilled team of four professionals, we synergize our strengths to deliver exceptional results consistently. Serving Greater London & Beyond: GM Construction extends its dependable services across Greater London, reaching up to Watford. Wherever you are within this expansive area, count on us to bring our expertise right to your doorstep. Why GM Construction? A Decade of Experience: With more than ten years of expertise in domestic projects and diverse European exposure, our quality is rooted in a wealth of hands-on knowledge. Comprehensive Solutions: From small repairs to full-scale renovations, GM Construction is your comprehensive solution for all home improvement needs.

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Reviewed by Dominic on 17/7/2025

George contacted me within hours of my posting the job and visited the next day. His quote was reasonable and he stuck to it. He arrived when he said he would and was meticulous in carrying out the requested job, clearing up afterwards. He is skilful and courteous. I will have no hesitation hiring George for other tasks in future and recommend him wholeheartedly.

MJJ Builders

Cellar & Basement Conversion in Knebworth

MJJ BUILDERS LIMITED .

Latest homeowner review

Reviewed by Kate on 7/7/2023

Great service, very quick response time, really helpful collecting and installing a new washing machine. Would highly recommend. Thank you

Christian Enache

Cellar & Basement Conversion in Knebworth

Professional team with many years of experience. We do plastering, painting, tiling, wall papering, fit laminate / wood / vinyl flooring, fit slabs, doors, kitchens, bathrooms and many more. No job is too big or small please do not hesitate to contact me. We are fast, reliable and cheap. Thank you!

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Reviewed by Camille on 18/8/2022

Great service, would use again.

BNT CONSTRUCTION LTD

Cellar & Basement Conversion in Knebworth

BNT Construction ltd offers a full range of construction services. We take pride in offering competitive services at competitive prices. Services ranging from Groundworks to full house refurbishment or home maintenance ,drainage , basements , piling . Also we can pride ourselfs as the fastest and reliable builder as per customer satisfaction . Latest extension completed from the aprovals of documents and council agreement 4 and half weeks thats based on demolishing the existing build and rebuild the entire extension with fitted kitchen underfloor heating etc. Quality and profesionalism are and always be a priority !!!! Team BNT

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Reviewed by Natalie on 14/3/2019

Excellent service! Will definitely use again!

A&M Building Construction LTD

Cellar & Basement Conversion in Knebworth

We are a team with over 20 years of experience on building industry. We offer these services Driveaways, house extensions, Loft conversions, garage conversions, Summer houses, Bathroom fittings , Patios, landscaping, Fully refurbishment, etc.

Latest homeowner review

Reviewed by Ataur on 12/1/2021

Thank you soo much I m sooo happy About your work And Driveway you make for me.Excellent work you Done for me clean and tidy work i will tell my all frend if they wan't to make Driveway they should call you first I hope you gonna do my Another driveway soon Thank you sooo much again

LEEWAY BROTHERS LTD

Cellar & Basement Conversion in Knebworth

We are a London based construction company with a wealth of experience. Our fully qualified in-house team of engineers can help you turn around an old property with some much needed refurbishment, create a brand new space with a loft conversion, or even build an entirely new property. We also have expert carpenters on board who can create bespoke wardrobes, cabinets, under stairs storage or even garden shelters with full design and installation provided. Our team all have a collective 30 years experience in the trade, transforming properties and commercial buildings in and around London and the surrounding areas. We believe in competitive quotations and offer a free site survey for peace of mind. We pride ourselves on being able to not only offer a top notch service to our customers, but also friendly and professional advice on anything our customers would like to task us with. We have many accreditations under our belt, such as Gas Safe, CHAS and Safe Contractors, so our customers can be sure they are in the right hands.

Latest homeowner review

Reviewed by Ian on 5/4/2022

This company were not engaged to do any work

RNM CONSTRUCTION

Cellar & Basement Conversion in Knebworth

At RnM Building Services Ltd, we strive to please our customers to their best satisfaction. We do a variety of things, such as:Carpenting, roofing, extensions, steel/structure work and lots more. We promise as a company that we will keep our word and we'll make sure we leave no customer without 100% satisfaction.

Latest homeowner review

Reviewed by Roger on 17/11/2022

Straight-talking, ran his team well, good quality workmanship

A-TECH BUILDING SERVICES LTD

Cellar & Basement Conversion in Knebworth

A-TECH BUILDING SERVICES LTD is a building company based in St Albans & Toddington, we are a family run business who pride ourselves on our workmanship. All our staff are time served and have many years experience in their given trade. Please see our website.

Latest homeowner review

Reviewed by Shahim on 21/1/2026

Arch-Con LTD

Cellar & Basement Conversion in Knebworth

Arch-con limited

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Reviewed by Roberto on 1/8/2025

Very friendly, trustworthy and fair priced handyman. He went above and beyond to complete a tricky job. Very happy with the service will happily use again. I Highly recommend.

Quinn

Cellar & Basement Conversion in Knebworth

Quinn construction Ltd general building works, specialize in Knockthrough, garage conversions and chimney breast and stack removal

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Reviewed by Srinivas on 18/11/2025

Highly recommend Ben for plumbing and rendering work! He did a fantastic job — everything was completed to a high standard, on time, and within budget. Very honest, easy to communicate with, and offered practical solutions without upselling. His pricing was fair and transparent, and the quality of work speaks for itself. It’s rare to find someone so reliable and skilled these days — will definitely be using him again!

MASTER

Cellar & Basement Conversion in Knebworth

We are a period/listed property restoration company. We specialise in traditional materials and methods. Often our work is to Identity and rectify damp issues which arise from the use of modern materials on period properties where breathable materials are imperative for the buildings features and characteristics to function. Once the breathability of the property is compromised damp issues will occur. We offer damp assessments for your property with a full report to guide you in the right direction eradicating current and future damp issues. Our assessments cost: £140 including guidance and a full report which details the source(s) of the damp & mould, how to eradicate the issues. - Lime rendering & plastering with horse hair. - Lime pointing. - Masonry repairs. - Paint removal using the Thermatech hot steam cleaning system. - Brick/stone feature walls. - lime wash - Breathable Painting. - lime plaster/render We often work with conservation officers from the authorities to ensure our works are of the highest standards.

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Reviewed by Alexandra on 10/5/2025

Marcus and his team did a great job for us reseating our period porch stone paving and repointing with lime mortar, including matching a reclaimed stone slab to replace a broken one

Platinum Project

Cellar & Basement Conversion in Knebworth

Platinum Project is a professional home improvement company based in High Wycombe, working with both residential and commercial clients. We focus on quality workmanship, clean finishes and well managed projects, delivered with clear communication and attention to detail. For full details about our services and recent projects, please visit our website.

Latest homeowner review

Reviewed by Meghan on 2/4/2024

Stellian and his colleagues were amazing! They went out of their way to make sure their work was high quality and long lasting. They were always on-time and communicated at each stage

ROMANS SCAFFOLDING

Cellar & Basement Conversion in Knebworth

A Romans Scaffolding Ltd we provide our clients with the highest level of service with the best prices available Satisfaction is our aim!!! All size jobs undertaken , references and reviews to match :-)

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Reviewed by Terry on 7/6/2025

Outstanding service very competitive Prices . Punctual and turned up on the days they said . Recommend this firm to everyone .

LSB Plastering Services

Cellar & Basement Conversion in Knebworth

Welcome to LSB PLASTERING SERVICES we offer a wide range of plastering work and are happy to work with our customers to get the job completed to top standard.

Latest homeowner review

Reviewed by Madhu on 17/11/2025

GMS

Cellar & Basement Conversion in Knebworth

Gareth, the proprietor of GMS is a qualified wood machinist by trade and has over 25 years’ experience working within the construction industry. Gareth first started the business in 2005 with a view to provide clients across North Wales and Cheshire with kitchens. In the last 10 years the business has diversified and now accommodates a scheme of works within construction from kitchens to bathrooms, gardens to bedrooms, fire and flood damaged properties and more. Gareth employs several staff and subcontracts to NICEIC registered Electricians and GAS SAFE registered gas engineers. Therefore, GMS can offer project managing and the client only needs to converse with one trade [GMS] rather than multiple. Thus, taking the stress out of the job.

Latest homeowner review

Reviewed by Mark on 23/2/2018

Great communication and work carried out to a high standard.

We can offer with confidence a professional and innovative service . Regardless of size or difficulty we will fulfill and exceed all criteria within your budget and time allocated.

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Reviewed by PATRICK on 4/8/2024

Sergiu Dragomir

Cellar & Basement Conversion in Knebworth

Hello, my name is Sergiu, I’m a professional multi skilled refurbisher. I’m happy to complete quality jobs for all homeowners that are interested in my services. We are a small team that can complete a various range of jobs (ventilation, duct fitting, air conditioning, plumbing, carpentry, painting, decorating, tilling, professional cleaning). I believe that with the professional skills that we possess and the experience that we have, we’ll prove to be qualified to complete any challenge and to make our customers happy. I have an experience more than 6 years in plenty refurbishment projects. I will consider myself lucky to make your property look better. Don’t hesitate to contact/hire me and I will give you good quality work for competitive prices.

Latest homeowner review

Reviewed by Melisha on 31/7/2024

Friendly and professional. Dismantled furniture efficiently. Would highly recommend

BUILDER

Cellar & Basement Conversion in Knebworth

I have been working in London since 2007, in those 16 years I have done plastering, wooden flooring, wooden fencing, ceilings and much more. I am new to Rated People, however I have the experience and can provide reference for previous work upon request.

Latest homeowner review

Reviewed by Francoise on 29/5/2025

Vasile replastered two ceilings in one day. He did an amazing job, and kept everything clean leaving the rooms spotless. Would definitely recommend. F.

Emanuel Craciunescu

Cellar & Basement Conversion in Knebworth

I'm a person with a 10-years experience. I offer pro-efficient services, quality, cleanliness, a very good general service.

Latest homeowner review

Reviewed by Anne on 16/9/2025

DEMAJ CONSTRUCTION LTD

Cellar & Basement Conversion in Knebworth

Our team has 20+ years of experience in the construction industry

Latest homeowner review

Reviewed by R on 10/12/2022

Demaj construction gave a reasonable quote and completed the job on time and to a very high standard. We will be happy to use their services in the future.

Berberi Constructions

Cellar & Basement Conversion in Knebworth

With over 20 years of experience in construction we want to get your project from conception to completion. Fast, trustworthy and efficient.

Latest homeowner review

Reviewed by Jermaine on 25/8/2020

Absolutely amazing tradesmen with very competitive pricing. transformed my 50m2 Driveway by tilling and installing aco floor drainage, great attention to detail and great finished product. Very highly recommended and definitely will have them returning for more work.

SSmart Build

Cellar & Basement Conversion in Knebworth

We are ssmART Build & Design Ltd. Our team pride themselves on We are ssmART Build & Design Ltd. Our team pride themselves on their diligence and painstaking attention to detail. We are a seasoned team of quality builders who have been helping homeowners London area for some time. We have an experienced and disciplined team who have completed many projects throughout our area of operation; indeed we can help you complete all types of home improvements and extensions/conversions. We pride ourselves on our impeccably high standards and always strive to deliver on time and within budget. We can help with all of the following and more: • Extensions (both single and double storey) • Loft Conversions • Basement Conversions • Garage Conversions • Kitchens • Bathrooms and wet rooms • Exterior and Interior painting and plastering • Plumbing, electrical work and carpentry • Annexes • Replacing both wooden and PVC doors and windows We are always delighted to meet our prospective customers face to face to discuss their requirements. We look forward to hearing from you soon.

Latest homeowner review

Reviewed by Florin on 15/7/2019

I found Lorand to be very professional in his craft ,friendly individual and very reasonable priced. I would highly recommend his work in extensions,brickwork etc.

Hatch End Builders

Cellar & Basement Conversion in Knebworth

Hatch End Builders is a small professional company with Experience of twenty year in the Building Industry mainly internal refurbishment all our jobs are high end properties in London working with great designers.Our aim is having a Happy costumer at all time .

Latest homeowner review

Reviewed by Sheila on 1/7/2020

Bujar was very prompt in response to my initial posting, calling to assess the job within a day and then confirming a start date for the work. He and his team did an excellent job on the hall tiling and also managing the cloakroom plumbing ( moving a sink and toilet) to complete the tiling here. I would highly recommend him and his team for doing a great job.

David Nicholson

Cellar & Basement Conversion in Knebworth

Design and Build services offered from inception to key turn completion. Full CAD drawing and building regulation design services by qualified Architect. Prices broken down to allow project costing and value engineering if required to suit your budget. Fixed price quotations and or estimated costs. DND ltd are a highly respected company offering quality workmanship at reasonable rates

Latest homeowner review

Reviewed by David on 18/5/2020

David, Adam and the team they employed were very good. They talked through every aspect of the job beforehand and made the costs clear in the contract. The construction was of a high quality and all done efficiently. This construction was completed during lockdown and the team adapted and communicated well throughout the process. Everyone who worked on the job was polite and friendly and professional. During the construction there were minor changes needed which were accomodated well, even after completion.

Allrounduk is a family run company providing a professional service to the domestic construction industry. We have been operating for 15yrs and offer a one stop shop for all your domestic requirements from small to large projects and everything in between

Latest homeowner review

Reviewed by Hanni on 11/3/2019

Cannot recommend highly enough. The work was finished to a really high standard. They were really adaptable when the tiles we had ordered failed to arrive on time. They adjusted their plans and worked really hard to get the work done on time, without compromising on the quality of the finish. They were also really considerate of working around young children, and were very patient with little interruptions from a fascinated six year old!

J.O.M. Group

Cellar & Basement Conversion in Knebworth

Latest homeowner review

Reviewed by Janet on 2/5/2022

John worked extremely hard to fulfil our brief & also had great vision when considering possibilities. He understood our needs and ensured all snagging was carried out before completion. All builders are currently pushed to the limit with supplies and staffing - John managed this to the best of his ability and was always polite, helpful and friendly.

Newman & Sons

Cellar & Basement Conversion in Knebworth

(123) Read reviews

Hi welcome to Newman & sons. We're a family based company from Berkshire & also covering the south of England specialising in high quality new builds/refurbishing/emergency repairs/industrial roofs. For over 40 years. Specialist in Roof cleaning/roof repairs / new roofs. Gutters/ upvc Facias/chimneys. We also carry out industrial roofing. We're LABC REGISTERED & only use good quality materials & family tradesmen to get your work done. All quotes are free & no obligation /insurance /emergency. Please call even if it’s just advice. We’re more than happy to help.

Latest homeowner review

Reviewed by Brian on 15/2/2024

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We are pleased to continue providing a professional and dependable service to all our clients, fully recognizing the essential role that high-quality standards contribute to our success. Looking forward, we anticipate that the robust relationships we are cultivating will result in an increased number of satisfied clients, fostering further recommendations and sustainable growth.

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Reviewed by Angela on 13/11/2015

Fedor and his team are polite, hard-working and extremely talented. It was a complicated job and Fedor handled it brilliantly. We are absolutely delighted with the beautiful London Stock brick wall that has been built. We would definitely recommend Fedor and Cuicut Construction, and will certainly use them again in the future.

S R DEANE BUILDING SERVICES

Cellar & Basement Conversion in Knebworth

(193) Read reviews

Our team of building professionals offers a solution for all of your building related needs. Whether its kitchen or bathroom installation or even something much smaller, we have the experience & personnel to provide the highest quality work.

Latest homeowner review

Reviewed by Laura on 2/10/2020

Stanley & his team originally came on board to build us a new rear extension which would house our kitchen as well as fit a new bathroom but as the project developed it ended up being near enough an entire house renovation and we're thrilled with the results. We still have work we would like to do to the outside of the house as well as a loft conversion and when we have enough money to take on those projects, we would definitely re-hire Stanley and his team. Highly recommend Stanley & his team.

Mra Construct Ltd

Cellar & Basement Conversion in Knebworth

Do not pay attention that we are new on this website...the experience is ours! We do: rendering, painting and decorating, floors and carpeting, woodwork,tiling and flooring, plumbing, windows and doors, brickwork, electrics.

Latest homeowner review

Reviewed by Ellisha on 3/4/2025

I recently had my bathroom floor tiles replaced. Chris was tidy, efficient and communication was transparent throughout. Happy with the end result and would recommend Chris to others.

Established over 80 years ago London Builders are FMB & NHBC registered & operate in Greater London providing a comprehensive range of services for residential properties from design and construction through to refurbishment, repairs & re-decoration.

Latest homeowner review

Reviewed by Brian on 24/4/2017

They were really professional compared to the other builders that came and contacted me. The Project Manager was also on hand to answer any questions I had and offered me adviced on how best to move forward. We ended up refurbishing our entire bathroom which is looking great now. I would highly recommend London Builders.

S G BUILDING AND SON

Cellar & Basement Conversion in Knebworth

S G BUILDING & Son is a family run business with over 30 years experience, covering building and general roofing. We offer a competitive, honest and reliable service, and are committed to developing a trust between the company and its customers. All our customers are offered a free quotations, all our work is guaranteed and a RAMS certificate (HEALTH AND SAFETY)is issued for each job.

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Reviewed by Daniel on 16/10/2023

Simon was very knowledgable with a wide range of skills, took the time to understand the issues faced and delivered a high quality solution. Great guy to deal with & quick communication when I had queries, would recommend to anyone.

AGC Electrical

Cellar & Basement Conversion in Knebworth

(146) Read reviews

AGC Electrical is a small and friendly company with an emphasis on customer satisfaction. Our pricing is reasonable and we aim to provide the best overall experience to all our customers.

Latest homeowner review

Reviewed by rachel on 11/2/2025

Good communication and was on time. Job was done well.

Construction company .Quality is my priority.the best price keep my clients happy.thank you

Latest homeowner review

Reviewed by Stuart on 3/8/2025

Gabi responded quickly and came round promptly. Completed the required work and also suggested additions to make the door stronger.

Prestiges Construction Ltd

Cellar & Basement Conversion in Knebworth

THE ONLY CHOICE FOR YOUR HOUSE!!! We work with homeowners and their partners to solve the unique challenges of managing house improvments.

Latest homeowner review

Reviewed by Eleanor on 11/9/2025

Flavius is an excellent builder - and his team are quick, efficient and professional. Apart from that, I want to say as someone who was completely new to building projects, Flavius was extremely helpful in advising me (as I had no project manager/architect overseeing things) and made the whole process so much better. I am entirely delighted with the resulting space - it is a total transformation! - happy to recommend Flavius and his team to anyone. On time, on budget and an excellent result. 5 stars.

Navy Rose Construction

Cellar & Basement Conversion in Knebworth

Hi my name is Conal I’m a enthusiast bricklayer with over 15 years experience. My services included - Bricklaying - structural brickwork - all types of brickwork pointing - Bespoke outdoor porcelain patios - bespoke driveways -fencing -Groundwork’s -general construction - flat roofs - new roofs/repairs My company prides ourself on our work with us being as only as good as our last job. I do truly believe our company goes above and beyond and stand out from the rest!

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Reviewed by Michael on 18/1/2024

At Surrey Hills Extend & Renovate we promise Quality and Craftsmanship. We take pride in delivering superior quality in every detail of our work, ensuring long-lasting and visually appealing results. We have a Customer-Centric Approach and your satisfaction is our top priority. We work closely with you, understanding your needs and preferences, to create spaces that truly reflect your vision.

Latest homeowner review

Reviewed by Julia on 27/6/2025

Very good and profesional

Octopus Builders LTD

Cellar & Basement Conversion in Knebworth

At OCTOPUSBUILDERSLIMITED, we pride ourselves on our extensive 16 years of experience in the construction industry. Our dedicated team works collaboratively to handle every aspect of your building project from A to Z. Whether it’s residential or commercial, we ensure quality craftsmanship and excellence in every job. Let us turn your vision into reality!

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Reviewed by NORMAN on 1/10/2024

Great job and would definitely rate it higher if I could. Will keep in mind if I need other jobs done around the house.

Ursache LTD

Cellar & Basement Conversion in Knebworth

We are a company with a young and dynamic team that strives to always be informed about the products, solutions and systems sold, both the classic ones and the latest news, the construction team will be available at any time, for any project. Thank you

Latest homeowner review

Reviewed by Paula on 3/9/2024

Hi, we recently had Florin and his team do some work on my Mum’s garden. He has done an incredible job and we are so pleased with his work. He was very friendly, polite and completed the job in a timely manner and to our requirements and very reasonable and good ideas and suggestions. I would have no problem recommending him and his team again and will do in the future if I know of anyone needing. Thank you for your hard work

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How our service works

  1. Create a job - it's free

    We'll connect you with the right tradespeople, from over 30 different trades.

  2. Get quotes

    Up to 3 tradespeople can provide a quote, but on average you'll get 1-2.

  3. Check ratings

    Look at each tradesperson's profile to see their ratings and reviews.

  4. Pick a tradesperson

    Use our homeowner checklist for extra tips on choosing a tradesperson.

  5. Job done

    Leave a rating for your tradesperson based on quality, reliablity and value.

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