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Local house extension experts in Knebworth, Hertfordshire

There are 980 House Extension specialists in Knebworth, and last month we helped homeowners get quotes for their home improvement jobs.

Browse House Extension specialists in Knebworth, Hertfordshire

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I’m a professional Carpenter with a qualification Level 3 in Carpentery, meanwhile Learning others trades. I'm doing my job professionally, never had unhappy client's. Just give me a chance to demonstrate!

Latest homeowner review

Reviewed by Addy on 22/10/2022

profesional carpenter we undertake all kind of work plastering , tiling , painting , extensions etc

Latest homeowner review

Reviewed by Bruce on 30/7/2022

Did not get this company to do my job..could not in honesty let someone come to my house to do a job who didn't want to look at, or measure anything but knew it would cost £800 To do it...absolutely ridiculous, but not the only company on this site who try it on.

My name is Akos, I am originally an architect but I have a company called Zebra Services here in the South of England including South London. I do a lot of things by trade but my favourite occupation and our specialty is roofing, guttering, chimney and decorating, and painting, this includes minor plasterboard work, doors, skirting boards etc. But I wouldd rather have them talk about what others think of us: Akos and his colleague that worked on our house were thorough professionals and took great pride in the work they do. Honest, on time, and always thinking on their customers' behalf. He will be my first call if I have anything else that needs looking into around the house. Ahmed, Putney The work was done thoroughly and within the agreed time. Very polite people, no hanging around on phone calls, cleaning up after the job. A pleasure to have Zebra around. Will definitely use them again when necessary. Christian, East Grinstead Akos did a good job on my summer house. Plus he was punctual, pleasant, hardworking, quick and sensibly priced. What more could one want? Would happily recommend him. Alice, BN7 Akos was excellent from start to finish. He is a perfectionist and a very hard worker. He worked through the rain to complete the job on time. He did excellent repair work on a highly damaged chimney stack and repaired gutters. Would definitely use him again. High-quality work and is a very pleasant man. Christopher, TN21 Akos did an excellent job in very unpleasant conditions and I couldn’t be more pleased with the result. Definitely intend to use Zebra again. Keith, East Grinstead Akos was charming and diligent. His initial inspection was detailed and his subsequent work was quick and neat. I will be using him again Martin, Brighton Akos fixed everything for us. He is an excellent tradesman. Highly recommended. Timothy, RH19 Absolutely brilliant job. Really good fair honest guy and very good workmanship. Will definitely use him again for anything roof/gutter related and would recommend him. James, KT6 Thanks for carrying out such good work in my flat at a reasonable rate. I will definitely have you back again and recommend you to friends and family that are looking to have work done. Thanks again. Clyde, Dartford Akos proved to be a hugely competent craftsman who completed our roof and guttering repair on time and within a reasonable budget. We have no hesitation whatsoever in recommending him. Phil, Forest Row

Latest homeowner review

Reviewed by Ivan on 4/2/2025

Very efficient and courteous worked Respectful of our property and cleaned up on completion of the work done.

The company has more than 10 years experience within the Landscaping, Construction and Horticultural Industry. Our specislism includes country estate management, grounds maintenance, sports ground services and water features. No job its ever too small or too large.

Latest homeowner review

Reviewed by Vivienne on 18/1/2021

Excellent service and work. Turned up on time, did a thorough job and went beyond what was asked. They do big landscaping jobs and small clearances. Highly recommended.

Hello! We are a team of tradesmen who work hard to make building ideas a reality. With all our commitment and skills, our work is up to a high standard. Full refurbishment, extensions, lofts. Feel free to ask for a quote. Anytime you are welcome.

Latest homeowner review

Reviewed by Yinka on 14/2/2025

Very conscientious, I’m Well impressed with how Professional and reliable Oleg was and this is 6 months after he finished the job.

Water Trade and Build Trade Services have been established for over 17 years. We are ready to assist with your Building, maintenance or plumbing projects. We are fully insured and directly employ our team of skilled tradesmen.

Latest homeowner review

Reviewed by Helene on 1/4/2020

Once the initial contact was firmly established with "the office" everything went smoothly, efficiently and with professionalism.

Small Building company based in Luton Friendly, Reliable, references available upon request carpentry/general building/plumbing/tiling/studwork/plastering/painting/decorating/decking/kitchens/bathrooms

Latest homeowner review

Reviewed by Alison on 23/12/2014

Fantastic service. I can not praise the work I had done highly enough. Definitely recommended

Mr Block

House Extension in Knebworth

Latest homeowner review

Reviewed by biswa on 5/9/2012

Good Job Rob

Latest homeowner review

Reviewed by bianca on 19/7/2013

George Bell came to work on some damp related issues in my flat in feb. since having completed the works the problems which first occurred have turned worse and George has been unwilling to get back in contact with me, despite chasing him for 5 months which only reaffirms that the job was poorly undertaken. The company main reception also seems to be a virtual reception so you can never speak with anyone helpful

donerightproperty co uk

Latest homeowner review

Reviewed by Sir on 3/7/2017

Very arrogant

Latest homeowner review

Reviewed by Jocelyn on 12/7/2013

Came back with an accurate quick quote.

door king

House Extension in Knebworth

Ive been working as a builder (qualified carpenter, electrician, plumber) for the last 34 years self employed and employed. Having loads of experience in building maintenance & refurbishments. CUSTOMER SERVICE is paramount alongside quality workmanship.

Latest homeowner review

Reviewed by Martin on 13/12/2012

Turned up as expected and did the job required, also helping with some other stuff which is v.helpful.

We are a reliable construction company located in London, offering a wide range of construction work, including house refurbishment, loft conversion, extension, carpentry, plastering, tiling and much more. We deliver our promise to make our clients happy

Latest homeowner review

Reviewed by Ms on 8/5/2022

Great builder. Makes everything look easy and a real hard worker. Very happy with the work undertaken. Quick work done to a fantastic standard. Finally found a builder who is as good at the start as at the end. Really good job done. I've already asked him to quote for another job!

I am a professional builder with more than 15 years experience.I have managed to extend my expertise in many other working areas such as roofing, carpentry, door/windows fixing, floor/wall tilling, painting, flooring, decking and wooden construction.

Latest homeowner review

Reviewed by Max on 19/10/2018

My experience with Zsolt was excellent. I needed so opening up jobs done inside the house and in the garden. The quality of the jobs were very good and exactly what was needed. Zsolt started early which let me get on with the day after. I definitely would recommend Zsolt and will use his services for the next required jobs we need. It makes life a lot easier when you have someone as reliable and professional as Zsolt around.

Latest homeowner review

Reviewed by lucy on 1/12/2014

Very sensibly priced and reliable. Arrived on time, answered calls promptly and did a really good job. I would definitely recommend.

CJ'S Glazing specialise in double / triple glazed windows, doors, bi-folds, porches and conservatories. LITTLE enough to care! BIG enough to deliver

Latest homeowner review

Reviewed by Prabhakar on 11/10/2024

very quick and work carried out efficiently. Would love to get my other work through in near future

TYBIM

House Extension in Knebworth

TYBIM is a well-established company which has built up a first-class reputation in the construction and property maintenance sector by successfully delivering high-quality services and projects. Our core values are quality and efficiency.

Latest homeowner review

Reviewed by Howard on 9/12/2018

(The work turned out to be considerably larger than originally thought). Everything about this company was excellent. There were no extra charged. I would recommend these people based on our experience with them.

Always there for you!

Latest homeowner review

Reviewed by Lynsey on 2/5/2017

The workman was very quick to come out and replace the seal on my bath. One month later, the seal lifted and needed to be done again. I have called, texted, left voicemails and still have not managed to get the workman to come back round to replace. I have now given up and learnt to reseal the bath myself. Therefore, I have unfortunately had to change the rating and comments of this job.

Roofing contractor . Other work undertaken

Latest homeowner review

Reviewed by Vicky on 1/12/2023

Good afternoon we due all types of work : Carpentry , Tiling , Woodfloor , Painting , Plastering - Render . Can you contact me for free quotes. Thank you

Latest homeowner review

Reviewed by Shwetang on 24/2/2025

????? “Absolutely thrilled with our en-suite renovation! The team was professional, efficient, and flexible. From day one to completion, the process was seamless, and the quality of workmanship was incredible. Our new en-suite is stylish, functional, and beyond what we imagined. Highly recommend!”

Elko Property Services offers an all-in-one home solution. We cover all aspects of building work from renovating homes to redesigning and constructing new builds. Our mission is provide you with impeccable customer service, satisfaction and quality of work.

Latest homeowner review

Reviewed by Pramod on 9/1/2024

I found Jayson very committed. Quality work at reasonable price. Highly Recommend.

Latest homeowner review

Reviewed by Michael on 6/8/2012

Steve was very reliable & turned up on time & carried out an excellent job. Very ameniable, professional & friendly. We are very pleased & will certainly employ him again & recommend to friends. Thanks Steve.

Together with my team we are providing very good services at lowest costs.

Latest homeowner review

Reviewed by Darren on 11/8/2023

Brilliant work, all finished to high standard and finished quickly.

We are a qualified team in general building. We respect our tasks as well as our aim is to provide quality work at all times

Latest homeowner review

Reviewed by Nik on 6/11/2020

Andrew and his team did a complete gut out, redesign and extension to our house, the work was completed a year ago but I forgot to write a review. 3 new bathrooms, new plumbing, electric, everything. The work was completed to a very high standard and he said he guaranteed it, and in the last 9 months, any issue that has come up he has come over within days and repaired anything immediately. Very honest and reliable builder

Hi my name is Craig Harwood. I've been a plumber for over 20 years and have good knowledge of all aspects of plumbing. I also have experience with some other trades as I come from a family of builders. I pride myself on being reliable, honest and have a high standard of work.

Latest homeowner review

Reviewed by Neve on 20/9/2016

Craig did an amazing job on my bathroom! He went out of his way to get everything done on time and was neat and extremely efficient. He charged me more than fairly for a such high standard of work and I couldn't be happier with the results. Craig is very friendly and reliable and I would highly recommend him to anyone without hesitation.

My company under takes most home improvement work ie:fencing flooring painting decking paving etc

Latest homeowner review

Reviewed by Andy on 21/8/2015

Ken came round, agreed a price and date to do the work then just didn't turn up. Not the best really.

Coates and Holland Electrical Contractors was established with an aim at delivering premium services in response to all electrical requirements. With 30 years of experience we are Safecontractor accredited for your peace of mind. All cards accepted.

Latest homeowner review

Reviewed by H on 11/1/2021

Good work

Castle Wren are a progressive and versatile construction business. Operating from the heart of Bishops Stortford on the Herts and Essex border, we work across the Home Counties, London and East Anglia. We continually strive to maintain our strong reputation for quality, and we have long standing partnerships with many of our clients with much of our work being repeat business. Our experienced and dedicated team cover all types of projects ranging from demolition and site clearance to new build housing schemes, commercial buildings or refurbishment projects. Private clients are an important part of our business, and we work with customers to bring their dreams to life, be that with a new extension, landscaping and garden transformations, patios and driveways or the end to end delivery of a new home. We have deep specialisms in demolition, groundworks, earthworks, and civil engineering projects and work with a wide range of clients, from private customers to national developers and housebuilders.

Latest homeowner review

Reviewed by Alan on 2/5/2024

After visiting my property, I was initially impressed by the gentleman who promised to quote, but have since heard nothing, in spite of more than one request to get back to me. Very disappointed

Established in 2008 quality is second to none

Latest homeowner review

Reviewed by George on 22/9/2017

Michael and his partner did a great Job with the plastering.took his time to blend in the repaired area with rest of the ceiling and prep for painting.since painting the repaired area it looks very good.Michael tided up after the Job and took all old material away.would use his company again.

Ziyad Construction with over 15 years of experience in the Construction industry, We carry out all aspects of Domestic/Commercial building works to the highest standards. Services include plumbing, carpentry, brickwork, loft conversions, extensions, house renovations, painting/decorating, plastering and all other general building works.

Latest homeowner review

Reviewed by Roger on 5/11/2024

Pump installation for a lack luster shower. Sorted well. Now have a powerful shower. Thankyou.

Latest homeowner review

Reviewed by Donovan` on 14/7/2012

Quoted and arrived on time, we never proceeded with the work but there is no option to remove job or decline without filling this in. Have written to Rated people...the Plonkers didn't respond. Rated people t ssers

Our young team will make your dreams of a stylish, high end home become a reality. The team is made up of qualified and professional individuals that take pride in what they do.

Latest homeowner review

Reviewed by Sam on 3/4/2018

Review for Evaluation and Pricing process only (quotes needed) Reliable team with clear professional experience. Meeting on set time with no surprises. Proper detailed work offer and everything explained in details.

We are a reliable team of builders with lots of experience and knowledge on the most of the construction industry #Gardening #House extension #Fencing #Paving #Painting AND MANY MORE JUST LET US NOW WHAT YOU NEED AND WE GET A SPECIALIST TO SORT IT OUT FOR YOU. THANK YOU

Latest homeowner review

Reviewed by David on 6/10/2021

Costel Prodea, provided a very good service. His team were well organised, on time to start, and completed their tasks speedily and correctly. The job was completed, within Costel's, specified pricing and timing. We, would recommend Costel Prodea, to others for fencing jobs generally.

Stripping your building can be a useful way of saving your organisation money on business rates, when you have a property that isn’t being used and will not be producing revenue for you in the foreseeable future. Talk to us about it. We specialise in preparing buildings for de-rating, which then gives the building owners the benefit of being able to apply for zero rating, when the building’s non-structural elements are stripped and render it incapable of use.When you work with All Construction Ltd, you’ll appreciate our expertise at separating waste materials. We’re a licensed waste carrier, we’re able to prepare a lot of the material we take out for reuse and save you money. We’re proud to have environment agency accreditation, which displays our standards in waste management and recycling.

Latest homeowner review

Reviewed by mario on 27/6/2023

Very helpful and quick plus good price , will definitely use again

If you’ve been meaning to take care of a specific home improvement project, but can’t seem to find the time or lack the skills or tools, why not rely on professionals to handle it? With over 7 years of experience of working in the trade, my team and I have proficient to work on a range of tasks around the home. From ensuring that your garden lush and well-looked after to assembling al types of furniture, to putting up a fence, and installing new tiles in your bathroom, we can get the job done swiftly and with superior results that will delight. Our significant experience means that we know how to overcome challenges and come up with ideal solutions in the nick of time for a positive outcome. We always honour our deadlines and work efficiently and swiftly to never compromise quality. We are friendly, patient, and will listen to your ideas and concerns and discuss our approach prior to starting on any task. Whether it’s a minor repair job or a more complicated installation job, you can rest assured that we will devote 100 per cent of our attention on every phase of the project for precise and impeccable results. If you are seeking a skilled and reliable team of handymen who take pride in their workmanship and excellent customer service, please contact me.

Latest homeowner review

Reviewed by MITSU on 29/4/2022

Unfortunately have not heard from Octavio since agreeing a price and date to do the work.

Inspired by the 20+ years of working with flooring, Best of Wood Flooring provides only the highest quality wood flooring installation, restoration and everything in between. We are located in North London and cater to the Capital and surrounding areas. Contact us today for a quote or to discuss your wood flooring needs.

Latest homeowner review

Reviewed by Mohsin on 2/5/2024

Great work Professional and very nice Extremely helpful and detailed work Work is so good that I will get the above 3 rooms done in next 2-3 weeks

We deal with insurance claims handling, reinstatement and repairs to any type of reinstatement including damage caused by escape of water, flood and fire damaged properties. We also completed works involving: Non-evasive leak detection. Insurance surveying / Schedules. Damp mapping and drying. Refurbishment and repairs to residential commercial buildings. Replacement kitchens and bathrooms. Plumbing. Plastering. Roofing. Painting and decorating. Asbestos surveys and removal. Carpentry. We are also a member of the The British Damage Management Association (BDMA)

Latest homeowner review

Reviewed by John on 4/3/2023

I'm multi skilled trader, and specialise in kitchen and bathroom projects. All other jobs are welcome as well.

Latest homeowner review

Reviewed by Martin on 24/3/2018

Tomasz repaired the wooden frame of a period window in my house. It was a please dealing with him. He was available almost immediately and job was finished as discussed. Overall an excellent experience, and I will certainly call on him again if I need him for any other jobs.

Nick the handy man and verulam fencing , friendly reliable service

Latest homeowner review

Reviewed by Vanessa on 23/2/2013

Nick was very pleasant and reliable and made a great job of the carport. Would definitely use again.

We do everything from touching up for the new tenants arriving, to the full upscale dream make over that you might be after. We are a professional team with a strong back bone in quality to make sure our customers are always happy with our work.

Latest homeowner review

Reviewed by Tracy on 10/4/2016

Turned up on time, coped with unexpected extra purchase, very pleasant and did a good job. Would recommend .

Latest homeowner review

Reviewed by Helen on 21/6/2012

They came back as promised to fix the neighbour's fence during patio installation, that had given way.

Latest homeowner review

Reviewed by Yvonne on 26/6/2018

Perfect - is all I can say. Gave me a quote as part of an insurance claim. They are really diligent; hard working and actually did more than I expected them to do. They quoted 5 to 7 days to do the work but it suited us all for them to spend a couple of hours longer than normal to get the work done in 5 days rather than come back after the weekend. I'm thrilled. I'm hoping they'll come back again if/when I have more work for them. They'd be most welcome and I'd be assured of a great job.

We are a motivated company based on professionalism, quality of work and attention to detail,on-time completion which we value and continue to build on.We ensure to deliver a top quality,trying to achieve the highest level of customer satisfaction

Latest homeowner review

Reviewed by Diane on 25/8/2014

Sebastian did a good job and came back to finish a few snags. Note the job took slightly longer than expected and we have been left with some grout on our floor. But overall pleased with our bathroom.

Latest homeowner review

Reviewed by Foo on 2/8/2016

I decided not to proceed with the work to the kitchen and bathroom. Gabor attended punctually and his quote was competitive. When I come to entirely redo my bathroom, I will definitely invite Gabor to quote again.

Highty skilled carpenter with 10 years experience. Expertise in planning carpentry construction projects,defining scopes of work and labord costs. With plenty of experience in all aspencts of barhrooms,kitchens,tiles,floor etc

Latest homeowner review

Reviewed by Chris on 2/4/2025

All kind of work undertaken with the experience of 14 years !!

Latest homeowner review

Reviewed by Jonathan on 13/5/2025

Help with a job in the garden removing bushes. Very helpful, friendly and punctual with completion of the job. Would recommended for further use.

I have been doing building work now for the last 15 years I cover all types of building work to extensions, alterations conservatories, Landscapeing renovation, Plastering I enjoy doing different types of projects including the awkward stuff if your interested in any work being done please let me know I am happy to take a look and talk you through the jobs and different ideas Many thanks Andrew wall Asw Builder

Latest homeowner review

Reviewed by CAROL on 19/3/2024

Completed job to a very good standard, very fair price, cleared all the rubbushcaway at end of job as promised. Would recommend his services.

We are a team father and sons, with over 30 years of experience in Wood Occupations and construction sites, whose goal is to provide our customers with quality services.

Latest homeowner review

Reviewed by Priyath on 22/3/2024

Pleasant to deal with. Few bits needed finishing never came back. Which was disappointing as this was promised.

ACG Ltd . Provides quality and good price on labour and materials All ways on time , best for clients

Latest homeowner review

Reviewed by Ray on 7/5/2022

Latest homeowner review

Reviewed by Nick on 20/3/2012

No complaints. Explained what was necessary, kept in good communication around when they could do the work (as there were snow issues) and the guy that did the work was friendly and helpful.

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Recently completed jobs

Here's what's been happening in and around your area

Size of extension: 3 rooms...

Size of extension: 3 rooms Height of extension: 2 floors Room(s) to be in the extension: bathroom, bedroom(s), kitchen To be discussed Planning...

To build round rear of house...

To build round rear of house where there was conservatory knock walls down inside put up steels

Size of extension: 1 room...

Size of extension: 1 room Height of extension: 1 floor Room(s) to be in the extension: dining room, kitchen, lounge/living room Good access, ready...

Approx 1.5x5 metre single...

Approx 1.5x5 metre single story extension on side of house pitched roof. Also 6 metre by 2 metre extension with bifold and pitched roof on 2 year old...

Extention

Rooms in extension: 1 Rooms used for: Kitchen. Floors in extension: 1 Architectural plans done: Yes Planning Permission status: Approved Building...

Rear house extention

Rooms in extension: 1 Rooms used for: Kitchen. Floors in extension: 1 Architectural plans done: Yes Planning Permission status: Approved Building...

Size of extension: 2 rooms...

Size of extension: 2 rooms Height of extension: 2 floors Room(s) to be in the extension: dining room, kitchen ..... Architectual plans have been...

creation of large, single...

creation of large, single garage in front garden of existing dwelling. Groundwork for levels and tree removal ahead of construction. also garage...

Size of extension: 3 rooms...

Size of extension: 3 rooms Height of extension: 1 floor Room(s) to be in the extension: bedroom(s), lounge/living room A bungalow with full...

this is at my bussines...

this is at my bussines premesis i want a door frame and door put into an arch also need a sink put into a room a small kitchen area removed and a few...

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

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  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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