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Find a local house extension specialist in Welwyn Garden City, Hertfordshire

There are 1139 House Extension specialists in Welwyn Garden City, and last month we helped homeowners get quotes for their home improvement jobs.

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CHRIS NWL CONSTRUCTION LTD is an professional refurbishment and construction contractor with many years of experience in construction industry. We are building company specializing in solutions for your Painting, Decorating, External Solid Home Insulations, House Refurbishments and Extensions. Providing free quotations with guaranteed customer satisfaction.

Latest homeowner review

Reviewed by Paul on 8/4/2022

Chose these guys for my house extension. Chris and his workforce are very organised with good planning skills and they’ve been making sure our needs have been met all along the way. Really recommend for any kind of building work.

Property Maintenance. Roofing and landscaping services?

Latest homeowner review

Reviewed by Darren on 28/1/2023

we are a company offering all building works, extensions, lofts, bespoke bathrooms and kitchens to suite your taste. We use only the highest quality products and materials for your job. Only the best design, materials and price will always be provided.

Latest homeowner review

Reviewed by James on 2/11/2022

The price quoted was incredibly accurate given the scale of the job, and the only extra money was due to items we wanted (e.g. Kitchen appliances) Overall I don’t have a bad word to say about these guys and work recommend them incredibly highly. Our extension looks better than I ever it imagined it to be.

ROKCONS Ltd.

House Extension in Welwyn Garden City

ROKCONS Ltd is a dynamic and experienced team, committed to providing excellence in general building and constructions, lateral thinking and innovation solutions to our clients. We are proud of our attention to details and the top quality of our final product

Latest homeowner review

Reviewed by Sarah-Jayne on 7/6/2022

Ray and Bogdan were a pleasure to work with! They are a Family team that ensure professional and high standard work . Work done has been on schedule and any issues found have been sorted. Bespoke elements , the guys came up with some amazing ideas that made our home fantastic. The team have a multiskilled element to their work that helps with all parts of job. They allow a good post work time frame incase of any issues. Recommended for anyone thinking of house renovation and extension.

Hello, my name is Ronnie and I am builder, born and bred in London, I started off nearly 30 years ago working with my dad, and have now taken over the business with my son, I am fully committed & driven to provide outstanding quality at a fair price. I am a fully qualified plasterer by trade, however over the years my skills have grown and grown in other trades also, giving me the opportunity to take on bigger work i.e. extensions, landscaping and full property refurbishments, to include from design to fit kitchen and bathrooms, however there is no job to small and welcome all types of plastering and building work. all my work is fully insured and I pride myself on being extremely polite, very clean and tidy and unbelievably punctual and reliable. many thanks for taking the time to read my profile and viewing my previous work pictures

Latest homeowner review

Reviewed by Ronak on 30/1/2023

Excellent work by Ron, very prompt and responsive.

Our services are designed with you in mind. The positive relationships we uphold with contractors and clients alike throughout the building industry demonstrates our consistent high standards of workmanship – no matter the service we’re providing. Brickwork Specialist Kitchens and Bathrooms Plumbing Tiling – wall and floor Electrical work Extensions Garage Conversions Flat Conversions Walls New Builds Full Renovations Structural Alterations HMO Conversions around the UK Heritage approved craftsmen Commercial refurbishments We offer a full service. We handle the planning applications, structural engineers and co-ordinate with the building inspectors – all major components in delivering your dream project. Whatever you need, we’ve got it covered.

Latest homeowner review

Reviewed by Jan on 9/9/2022

Our canopy porch was finished on time and we are very pleased with it. The builders were very tidy, and took away all the waste and rubbish. We would highly recommend them.

Maricel Balau

House Extension in Welwyn Garden City

Reliable handyman, well organized and with strong general skills. No job is to small or to big.

Latest homeowner review

Reviewed by Olivia on 27/9/2022

B.Z.BROTHERS LTD

House Extension in Welwyn Garden City

Diversified services. Unvarying quality. Our NVQ qualified team can provide the best of your expectation.

Latest homeowner review

Reviewed by Florian horea on 22/1/2023

KM Building specialists

House Extension in Welwyn Garden City

KM Building Specialists is dynamically developing company created by people with passion. Our mission is professional advice, meeting expectations and, as a result, obtaining satisfaction of all our clients. Km Building Specialists was founded in 2009 in response to local market demand. As a team, we feel responsible for the effects of our work and customer satisfaction. We take care of the quality of our products and the timely delivery of orders. We offer our clients a full range of services including professional technical advice, free measurements, company assembly, transport, warranty etc. We work closely with various construction specialists (electricians, gas-safety experts, architects, garden designers) to enable us to deliver the top class service and to ensure that the safety building regulations and codes of practice are followed. We are CIS registered and hold comprehensive insurance. Most importantly, our builders are friendly, reliable and highly experienced. We can also source high quality and good value building materials from Europe, we specialize with windows. An individual approach to each client makes your home more attractive, safer and more comfortable. Out professional and highly qualified team is able to meet any challenge from consultancy at the design stage, through measurements, to a beautiful finish. WE DO WHAT WE REALLY LIKE… We invite you to familiarize yourself with our offer and to order a free visit to your property from our specialist to discuss your needs and offer a free consultation based on your requirements and our years of experience.

Latest homeowner review

Reviewed by Jake on 23/5/2022

Really happy with the end result it looks better than what we had ever imagined it would be. Marek was on hand to help us throughout the build offering suggestions outside of what our architect had planned and in fact the ideas were better for us as he really understood what we wanted to achieve but also the changes suggested helped our property value. We also utilised the array of contacts for our work tops, doors and windows which again look great and we had a positive experience with all the third party

G&R Building Services

House Extension in Welwyn Garden City

I m looking forward to work good make everyone happy I am qualified I did do 130 flats in luton so I m waiting for any once jobe contact me because u will be happy with the service many thanks Gentian??

Latest homeowner review

Reviewed by Margaret on 10/12/2022

Very prompt friendly and courteous. Neat and tidy workers. Went above and beyond in sorting out my problems with the floor. Highly recommend . I can’t praise them enough

MID BUILDING LTD

House Extension in Welwyn Garden City

MID BUILDING team based in North London of honest, punctual, qualified professionals, providing a full range of building services. We are offer affordable, reliable, hassle free building services for all our customers & customers satisfaction guaranteed

Latest homeowner review

Reviewed by Ashe on 4/10/2022

After this project I trusted Emil with a much bigger renovation. I paid £13,000 and it was a disaster. The workmen were unqualified, all the work they did needed to be redone, they told me things were done and they weren't when i checked. It was a huge huge problem for us. They then ghosted us. 'I will definitely finish the job, I believe in karma' etc. well they left the site, never came back and left us in a very expensive mess. I have heard this happening a lot lately from other people.

Unico

House Extension in Welwyn Garden City

Whether for commercial or domestic projects, we provide a friendly and professional service that includes all aspects of design, planning, construction, building repair and maintenance. With extensive experience in the construction industry, our team of fully qualified tradesmen guarantees a high standard of workmanship. We are completely committed to every project we undertake and all are properly managed to keep writhing budget and in schedule. We are punctual, reliable, tidy and and the good relationships we build with customers means a high level of repeat business and recommendations. Facebook & Instagram unico developers

Latest homeowner review

Reviewed by Paul on 3/11/2022

Too Inexperienced

We are a St Albans based, with 25 years experience. We specialize in extensions, refurbishments and all types of building work. Our team are City and Guilds trained, Gas Safe and electrically certified. Our aim is to deliver high quality work.

Latest homeowner review

Reviewed by Patrick on 20/6/2019

Good job thanks

AB Contracts

House Extension in Welwyn Garden City

Adam & Darren always work to acheive the highest standards acheivable ,handyman ,painting, carpentry ,fence erecting to landscaping to re pointing also damp works penetrative or rising ,no job to big or small for AB contracts we never dissappoint, pls look at ratings and comments to back this up ,look forward to hopefully working for you all the best Adam b & Darren c AB contracts & Rated people

Latest homeowner review

Reviewed by Yousuf on 22/1/2022

Superfast!! Darren and his colleague was so quick! Got the job done in 11mins! Excellent!! Highly recommended would definitely hire again! Thanks so much! 5/5!

I have been in rhe building trade for over 45 years as carpenter/joiner, foreman carpenter and site manager until i branch out in building extensions/ loft and garage conversions, refurbs ect. Since 1986.

Latest homeowner review

Reviewed by Moise on 6/12/2021

Robert and his team were excellent. Work done to a great standard

We are working the best and qualitative way.

Latest homeowner review

Reviewed by Veronica on 3/6/2016

Ed Ago Limited are one of the best building firms we have ever worked with. Polite, helpful, able to deal with problems quickly and without fuss. An excellent standard of workmanship and an altogether stress-free experience. Highest recommendation!

Latest homeowner review

Reviewed by KEVIN on 17/1/2011

We have been very pleased with all aspects of Chris's work, the job was started on time and completed as scheduled. The en suite and downstairs loo being done before Christmas and the Main Family bathroom in the New Year. Any Snags were overcome and a high quaility finish in all rooms bringing our bathrooms upto date. Chris arrived when he said he would often 7.30 in the morning and even Saturdays. We would recommend Chris to family and friends without question, and have him back in the future - Fiona Kevin and Family

J mcloughlin

House Extension in Welwyn Garden City

Latest homeowner review

Reviewed by Ian on 26/9/2008

I'd highly recommend John. He managed our expectations well from the start - turned up on time to quote, delivered a quote the next day as promised, provided references when we asked for them (who backed up that he's a good builder), found a space in his schedule quickly to fit our job in, did it quickly, efficiently and leaving no mess afterwards. And charged us a reasonable amount for the work. Couldn't speak more highly of him, and will definitely ask him to quote on our extension when we progress with the planning.

Welcome, Our company offers a complete service starting with first few sketches passing through building regulation approvals and all the steps till those finishing touches ensuring that our customers are fully satisfied.

Latest homeowner review

Reviewed by Syed on 17/12/2015

There isn’t enough space on here to describe how happy I am and stress free Rob and his team made the process. I had a major extension to the rear and side of the home which meant I wasn't able to use the bottom area of my home at all. Rob and his team took care of everything and also provided so much extra help all the time any time and keeping up with the consistent service is truly unmatchable. I’m very happy with the work, the finishing and everything else. Choose Rob and his team and you can’t go wrong

Ambient Solutions

House Extension in Welwyn Garden City

Latest homeowner review

Reviewed by Angie on 6/7/2011

We called out Ambient Solutions and received a quotation for the job within the 24 hours promised – no charge for the call out or the quotation. The work was started and completed on time. I would highly recommend Ambient Solutions for any plumbing job. Thanks Ambient! Angie at Zest ST Ltd

Eros stone

House Extension in Welwyn Garden City

My experience extends 15 years in stone restoration and I'am extremely proud of my work. re-pointing, exterior stone restoration and fixing, plaster and Venetian plaster work, tilling, rendering,city & guilds level 2 carpentry qualification.

Latest homeowner review

Reviewed by Catherine on 3/1/2014

Excellent service, very friendly, willing to do whatever it takes to do the job. Highly recommended.

M P Building Services

House Extension in Welwyn Garden City

We are a small company based in Stanstead Abbotts. Our work is always to a very high standard. We use the best quality materials and a team of fully qualified tradesmen. We work closely with our clients to give them exactly what they want.

Latest homeowner review

Reviewed by Heather on 25/7/2012

I posted the job on Thurs, Mick and Pete came round on Sat morning and the job was done by Tues. Really professional and friendly guys who explained everything to me really clearly. I cannot recommend them highly enough.

D Waring

House Extension in Welwyn Garden City

We offer a friendly, reliable bricklaying service, covering Herts, Essex and Beds. We offer competively priced quotes in high quality brickwork .

Latest homeowner review

Reviewed by S on 13/9/2013

Dan and his colleague built a rather large red brick wall for me which I am very pleased with. They were fast, tidy and efficient. They were also able to give advise on the best way to finish off the top of the wall. Secondly, they used the right mix of cement and lime to continue with the same colour mortar. They were also able to calculate exactly the quantity of bricks, cement etc. I would need so therefore there was very little wastage. I would definitely use them again.

A customer focused builder who provides a professional, reliable old fashioned service. FULLY INSURED & ALL WORK GUARANTEED. call & i will be happy for you to take a look at my work,

Latest homeowner review

Reviewed by Phil on 18/3/2020

Efficient service, reasonable price. Quality of work was very good.

Grzegorz Kowalski

House Extension in Welwyn Garden City

GREAT GREG BUILDER!!! We offer: pointing, brickworks,, pavingstons laying, panting, decoratoring

Latest homeowner review

Reviewed by Ben on 17/10/2020

Greg built a front wall and laid paving in my front and back garden. He did a really good job, and it looks great. He was reliable, tidy, and really clear on things like costs and how the slabs would be laid so I knew exactly what I was getting. Would definitely recommend him to anyone wanting brickwork or paving/landscaping.

Latest homeowner review

Reviewed by Steve on 30/1/2015

Can't fault David's work and attitude. He's top chap and was great value. We're very pleased with the finished job.

DLJ HOME IMPROVEMENT

House Extension in Welwyn Garden City

We are a local building company in Stevenage. We specialise in garage conversions,Extensions, Porches, Conservatories and Windows and doors.We are new to this site but can supply lots of local recommendations.Written quotes free and no heavy sales pitch.

Latest homeowner review

Reviewed by Katy on 28/3/2014

Had windows and back door replaced today in the lean to. They look great and they were very professional. Will be using them again to have the roof done and will use again in the future. Thanks for a great job

lnjconstruction

House Extension in Welwyn Garden City

We are a construction company with 15 years experience on jobs from small renovations to new build houses and flats. (Specialize in brickwork)

Latest homeowner review

Reviewed by Mandeep on 5/6/2015

Good Job

Latest homeowner review

Reviewed by Amy on 18/12/2012

I can highly recommend Rob and his team at Made Build Interiors. They have just finished work on our Bathroom, Kitchen, Living room and Dining room. They have completely transformed all of these rooms and we are extremely happy with the end result. Rob is a great sounding board for creative and structural ideas and has a good eye for detail and design. They kept all work areas clean and tidy and had a friendly but professional attitude. We will definitely use them again for future work.

TopCoat

House Extension in Welwyn Garden City

Bathrooms are not always luxurious, but they can be. When you work with Topcoat, we will show you how new hardware can be added and how showers and sinks can be upgraded to improve the look. It’s even possible to add more space to an existing bathroom

Latest homeowner review

Reviewed by Rui on 28/3/2018

Wojtek worked hard and finished my bathroom tiling and room painting in high standard. I would recommend him and use his service again.

Selyons

House Extension in Welwyn Garden City

Latest homeowner review

Reviewed by David on 23/4/2012

Do not be fooled by Stephen's laid back nature and quite approach, the structural building work we asked him to undertake was, once agreed, carried out to the letter, completed on time, to a very high standard and within budget. We would not hesitate using Stephen again for any building work.

Clarke Construction

House Extension in Welwyn Garden City

An experienced, reliable and versatile tradesman specialising in plastering, general building and property maintenance.

Latest homeowner review

Reviewed by John on 8/10/2013

John is a great bloke. Very professional, punctual, tidy and skilled. He has done a great ceiling repair job for me and I'll certainly be using him again for other jobs. Highly recommended.

Kingston & sons

House Extension in Welwyn Garden City

Baldock build

Latest homeowner review

Reviewed by James on 6/10/2016

Good job. Thanks very much Glenn.

andrew mic

House Extension in Welwyn Garden City

Latest homeowner review

Reviewed by ANDREA on 30/3/2014

Andrew was polite and courteous! He was also a very good worker and I was impressed by his knowledge. Thank you Andrew, I hope you will help me out again in the future!

Leo Property Development

House Extension in Welwyn Garden City

Greetings we are the soul of WELLSELEC, the last 12 years we have been installing designing and running jobs to the satisfaction of my clients on this basis 'people don't care how much you know until they know how much you care'

Latest homeowner review

Reviewed by Stephen on 6/7/2015

Very pleased with all the work done, good communication and the end result was exactly what I wanted to achieve. I would use Matt again, very honest, works hard and has a good attitude towards your project. Big thanks again.

TT Property Services

House Extension in Welwyn Garden City

The Company offers a complete home and garden service to both the domestic and commercial customer. Our services range from Painting and Decorating to Plastering and garden maintenance and design. We are a competitive, friendly and reliable service

Latest homeowner review

Reviewed by PHILIP on 11/11/2018

Terry,+++++++++++ supported by Lance St John attended daily and worked to a pre arranged schedule. Their approach was professional, they were courteous, reliable timekeepers, the work place was kept tidy, their attention to detail was exemplorary, the quality of finish superb. Terry managed the procurement of supplies and the attendance of skilled tradesman i.e. bricklayers, electrician, plumber as required without any undue delays. We would have no hesitation in recommending him, We will use him again!

EMO DOM Ltd

House Extension in Welwyn Garden City

15 years experience. General building work. Plastering, rendering, screeding, tiling.

Latest homeowner review

Reviewed by Lyn on 19/6/2021

Really helpful, good communication as we tried to solve the issue etc. Very pleased.

ioan simon

House Extension in Welwyn Garden City

Professional plastering services provider. Wide range of experience, will cover all customers needs: restore water damage to interior and exterior, plaster damage, plumbing or electrical alterations, re-skimming or skimming of new house.

Latest homeowner review

Reviewed by john on 18/3/2019

Excellent!! Very polite, efficient, trustworthy. Turned up on time and carried out works to a good standard. Highly recommended!

Latest homeowner review

Reviewed by Ian on 23/7/2013

Gary built a double skin brick garden wall with substantial piers and a cavity for planting, as well as built in storage for bins. He was prompt, unbelievably hard working and generally a great bloke to deal with. We could be more happy with the job and certainly intend to ask him to do more work for us again when our renovation project is at the right point. Couldn't be more highly recommended.

Latest homeowner review

Reviewed by andrew on 3/4/2012

Very reliable, honest, skilled and reasonably priced. I would highly recomend him

DANILO CONSTRUCTION LTD

House Extension in Welwyn Garden City

DANILO CONSTRUCTION LTD started with smaller projects like fully refurb. bathrooms ending up with full property's refurb. My company is small but growing steadily with highly skilled trades which can provide high quality finishes for competitive prices

Latest homeowner review

Reviewed by samantha on 12/5/2022

Very pleased with the result. The work was done quickly and neatly. Nothing was to much trouble. Would us again.

Elite Drives LTD

House Extension in Welwyn Garden City

we are a family run business with an experienced of over 30 years in the industry we specialise in all types of groundwork undertaken we have all our own equipment so you don't have to worry from grab lorry to Minnie digger the best about us is we take all the stress away so you don't have to worry

Latest homeowner review

Reviewed by John on 18/9/2021

Very reliable tidy work done very happy

We have over 15 years experience in building and construction. We have highly skilled professional team that can carry out nearly any type of construction work at competitive rates. Customer service and high quality finish is very important to us.

Latest homeowner review

Reviewed by Mansoor on 18/6/2013

fantastic service and good price..would recommend. very honest.

t.j.l builders

House Extension in Welwyn Garden City

Latest homeowner review

Reviewed by Alf on 4/11/2016

Fast, professional job was undertaken for a reasonable price. We are very happy with the end result, and wouldn't hesitate to recommend Terry's services.

MP Building Improvements

House Extension in Welwyn Garden City

With more than 18 years of experience, MP Building Improvements delivers an outstanding customer service, excellent workmanship, quick turnarounds, and competitive prices with efficiency and pride.

Latest homeowner review

Reviewed by Joseph on 7/10/2019

I would not recommended to anyone due bad workmanship

Aztec

House Extension in Welwyn Garden City

We are a family run business, with over 30 years experience, with domestic and commercial decorating contractors. From high class wallpapering to external decorating including coving and Corniche specialists.

Latest homeowner review

Reviewed by Gail on 3/8/2015

A great job painting exterior of wood clad house. House now looks great. Thanks to Bobby and the guys. Would Highly Recommend. Gail and Barry

FANBS ltd

House Extension in Welwyn Garden City

We have both over 15 year experience in construction industry and we decide to make our own company Ready to help you and negotiate best price for you and us.

Latest homeowner review

Reviewed by Kye on 29/10/2018

Shortly after making contact, we met and discussed the details of the job. Friendly and respectful guys working with my family. The job was done on time and to quality, I would recommend them.

NCR CONSTRUCTION

House Extension in Welwyn Garden City

Fully skilled tradesmen in business 30 years free estimates and fully insured all aspects of building & roofing work undertaken very competetive rates

Latest homeowner review

Reviewed by Alan on 2/10/2016

v.Good job and didn't shy away when other problems showed. Stuck to the task and completed the job. highly ??recommended

SSG Solutions UK Ltd

House Extension in Welwyn Garden City

Our team of experienced, qualified and motivated people in various areas is the perfect solution for you!

Latest homeowner review

Reviewed by zhiyuan on 12/9/2022

Stan did a brilliant job on our bathroom refurb and kept us informed with decisions all times. He dealt with any issues from the job professionally and was very meticulous.

We have over 15 years experience in various trades. specialities are all aspects of traditional roofing, Flat and pitched roofs. We can cater to all your tradesman needs with an extensive trusted list of sub contractors. See facebook, Instagram or visit out website

Latest homeowner review

Reviewed by Nizar on 6/11/2022

A very professional company. The job was done with precision and extremely polite. So glad it was done on time and then allowed me to assess to my satisfaction. Great guys

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Recently completed jobs

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

Add a porch, open hallway,...

Add a porch, open hallway, playroom off kitchen with a downstairs toilet/shower. Re-use current doors and windows, only one UPVC window required. Flat...

Replace conservatory with a...

Replace conservatory with a room and extend kitchen and dining rooms into that space.

Extension

Single storey rear extension, 7.5 m wide, 4m out. Kitchen to be put in current living room, utility and toilet added to current space Size of house...

Small front porch extension

We've recently our had planning application accepted for a small extension/porch construction to increase the floor space in our existing hallway -...

A single storey extension...

A single storey extension approximately 6 metres x 4 metres off the back of existing house - opening up to make open plan space

2 story extension, half width...

2 story extension, half width on 2nd floor. Full inner refurbishment and central heating installation. Driveway and garden landscape work also.

Size of extension: 1 room...

Size of extension: 1 room Height of extension: 1 floor Room(s) to be in the extension: dining room Looking to build a small downstairs extension...

Add a porch, open hallway,...

Add a porch, open hallway, playroom off kitchen with a downstairs toilet/shower. Re-use current doors and windows, only one UPVC window required....

3 Bedroom Semi Full Renovation...

3 bedroom semi detached full renovation including adding a single storey 3x8m rear extension. New central heating, including downstairs water fed...

Size of extension: 1 room...

Size of extension: 1 room Height of extension: 1 floor Room(s) to be in the extension: bathroom, toilet We need a Toilet extension at the rear of...

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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