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Find a Local Extension Builder
Quotes for Porches, Lean-to's, Rear, Side & Wrap-Around Extensions!
Need an Extension Builder?
Needing more space in the family home is a common problem.
As time goes by, your needs change, and you might find you’re in need of a bigger kitchen, an extra bedroom, a home office or a larger living area. If you live in an area you don’t want to move away from, and you love your home, moving might not be what you want to do.
Building a house extension might be the ideal solution. It will give you the extra space you need without the stress of looking for a new home.
Find an Extension Builder
POST YOUR JOB
Tell us about the work you need doing around your home.
RECEIVE UP TO 3 QUOTES
Up to 3 local Extension Builders will then be in touch to quote for the work.
CHOOSE YOUR EXTENSION BUILDER
Compare quotes then choose your preferred Extension Builder.
Extension Builders in the UK
Find:
- Aerial Specialists
- Architects
- Bathroom Specialists
- Bricklayers
- Builders
- Joiners
- Cleaners
- Drainage Specialists
- Driveway Specialists
- Electricians
- Energy Saving Specialists
- Flooring Specialists
- Gardeners
- Handymen
- Heating Engineers
- Kitchen Fitters
- Locksmiths
- Loft Specialists
- Metalworkers
- Painters & Decorators
- Pest Controllers
- Plasterers
- Plumbers
- Removal Companies
- Roofers
- Security Specialists
- Specialists
- Specialists
- Stoneworkers
- Swimming Pool Specialists
- Tilers
- Traditional Craftsman
- Tree Surgeons
- Window Specialists
- Window & Door Specialists
I have over 20 years of experience in construction industry in 3 different countries. All my jobs are done with great attention to detail and I can guarantee customer's satisfaction. I have experience in every aspect of construction from demolition,...
Latest Fascias / Soffits / Cladding - uPVC Review
"Delighted with job. Very professional service and would definitely recommend company."
Reviewed by Gail on 10th Oct 2026Based in AB21 9QR,
Aberdeen
Extension Builder
Member since Mar 2020
ID Checked
Aamir Builders Ltd is a Manchester-based limited company with 20 years of building experience. We have a qualified, skilled team delivering high-quality workmanship on every project in the Manchester area. Contact us for a quote today and check out...
Latest Extension Review
"⭐⭐⭐⭐⭐ Aamir completed a double-storey extension for us and we’re very pleased with the finished result. It was a substantial project, and throughout the build he took ownership of the work and made sure everything was brough..."
Reviewed by Ahmer on 30th Sep 2026BuildCraft innovation is a reliable, London-based building company specialising in renovations, new builds, porches, extensions, loft conversions, plumbing, electrical work, luxury bathrooms, outbuildings, garden & landscaping, and driveways etc. W...
Latest Extension Review
"He has been excellent; his honesty and reasonableness have been apparent since our initial interaction. When he provided the estimate, his approach was notably distinct from that of other contractors.He was very detailed and thoro..."
Reviewed by Sanjeev on 8th Sep 2026Based in UB4 0HZ,
Hayes
Extension Builder
Member since Oct 2023
Public liability insurance
With 30+ years experience between us in all aspects of building work. Specialising in; • Extensions • Full renovations • Steel works • Kitchens • Bathrooms • Underpinning & concrete work (footings/floors/liquid screeds) • Underfloor heating...
Latest General Maintenance Review
"Excellent service, true to their word, very helpful. I would not hesitate to recommend Alex and his team. I will definitely use them sgain"
Reviewed by Joanne on 9th Sep 2026At R Pira , we offer a wide range of construction and renovation services tailored to meet your needs. With years of experience and a commitment to quality, we deliver exceptional results on every project. Our services include: 1. Demolition We pro...
Latest Wooden Sash Window Review
"Romeo did a great job with my extension. I would use him"
Reviewed by Rahad on 2nd May 2026Best work guarantee take pride in all work weather big or small we offer too work with clients too find best way forward
Latest General Maintenance Review
"Terry is a really good guy and really good to work with. Him and his team are very friendly, knowledgeable and efficient. Wouldn’t hesitate in recommending Terry and the team to anyone with an upcoming project"
Reviewed by Andreas on 31st Aug 202659 yr old builder.been in the trade 30 years. Mainly do conversions and structual alterations. All types of trades available eg joinery.roofing.plumbing.electrical and plastering available
Latest Internal Walls Review
"We couldn’t be happier with the work carried out by Paul and would highly recommend him to anyone looking for a reliable, professional and genuinely lovely builder. From start to finish, Paul was fantastic. He had excellent timeke..."
Reviewed by Victoria on 24th Sep 2026Aspire provide quality workmanship and experience in all jobs, with over 15 years of experience. Working all over the Manchester area we pride ourselves on doing the best job possible and making life as easy as we can for our customers.
Latest General Maintenance Review
"Brilliant from start to finish"
Reviewed by Ella on 5th Oct 2026We do all internal & external work on all properties All maintenance work We build extensions, garage conversions, porches, loft conversions etc Internal & external painting Plastering & Rendering Roof cleaning, soffits & facias We also do Fencing,...
Latest Laminate Flooring Review
"Timely quote and work completed efficiently"
Reviewed by Anette on 7th Oct 2026I work as a Surveyor/Multi Trader. I complete works in All Major chain Public houses & Restaurants Major high street stores refurbishments to new works. I also complete private works. That covers all aspects of construction/ Buildings/Property De...
Latest Damp Proofing Review
"Scott did a faultless job removing bricks from my chimney breast and smoothing the plaster behind. He turned up on time, on the days that were arranged, and charged the exact amount quoted. Scott is polite, professional and left t..."
Reviewed by Eleanor on 5th Oct 2026With over 30 years industry experience we have a wealth of knowledge and talent. From extensions to home renovations, new kitchens and other projects. You can count on us to get it done and within budget. My team have been working on projects toge...
Latest Internal Walls Review
"he was very helpful"
Reviewed by Dilara on 6th Oct 2026Plumbing/all building works ..electrics. city &guilds in plumbing with 34 yrs experiance in all trades.. Simply buisness insurance. I cover all areas of multiskilled work Specialise in kitchens and wetrooms..tiling and all aspects of flooring &am...
Latest Wooden Doors - Internal Review
"I'm very happy with work Jas did, there were problems that came to light after he started but he had the skills and experience to sort them out. He did a really good job and I now have a lovely new bathroom."
Reviewed by Susan on 4th Oct 2026Evadtone Renovations is a premier renovation company dedicated to transforming spaces into remarkable, functional, and aesthetically pleasing areas. With a passion for craftsmanship and a commitment to excellence, Evadtone specialises in comprehensiv...
Latest Flat Pack Furniture Assembly Review
"Very efficient and professional."
Reviewed by Ken on 18th Sep 2026Hi my name is Andrew ,I’ve been in the building industry for over 35 years.I take pride in delivering reliable, high-quality workmanship for both residential and commercial customers. Our services include: • Extensions and new builds • Brickwork an...
Latest Concrete Base Review
"Job completed efficiently and at reasonable cost by Andrew, a conscientious worker. Recommended."
Reviewed by Paul on 21st Sep 2026* Lawn cutting and regular garden maintenance * Hedge trimming * Garden clearances and tidy-ups * Green waste removal * Patio and driveway pressure washing * Full landscaping projects * Patios * CCTV installation & Alarms * Home Improvements...
Latest Internal Walls Review
"Tom and James were great from putting our minds at ease about the works right through to completion. Really appreciate the work that they have done it’s been completed to a very high standard."
Reviewed by David on 15th Oct 2026At Cox & Sons Building Co, we specialise in high-quality construction projects, including bespoke extensions and comprehensive renovations. Our team is dedicated to delivering craftsmanship that meets the highest standards, ensuring every project is...
Latest Builder Review
"Excellent work carried out to a very high standard, Brad is highly skilled and a multi talented professional, reliable and on time throughout the build. Would highly recommend him for any of his services!"
Reviewed by Ross fletcher on 18th Sep 2026Building firm specialising in porcelain/sandstone patios. We undertake most building works including Window removal/fitting Bricklaying Landscaping Structural Demolition Drainage Painting Paving Concreting Window/gutter cleans Pressure wash...
Latest Underpinning / Foundation Review
"very good*****************"
Reviewed by Richard on 3rd Oct 2026We are a family business working from small to big projects loft, extension, garden all work from A to Z established in 2019 and all ours employees are having over 20 years experience Let's Work Together!
Latest Internal Renovation / Reconfiguration Review
"We couldn’t be happier with the service we received from this company. From start to finish, the whole process was excellent. The team were professional, reliable, friendly and took great care to ensure everything was completed to..."
Reviewed by Scott on 30th Sep 2026Based in HA5 2QH,
Pinner
Extension Builder
Member since Jan 2026
ID Checked
snugrenovations.com Garden rooms Extensions Garage conversions Loft conversions conservatory installations We also supply and fit upvc windows and doors . Conservatory warm roof . Carpentry and joinery
Latest Garage / Outbuilding Construction Review
"From concept to the hand over of keys, nothing was to much trouble for Ben and his team. Communication during the build was top notch. Certainly recommend them A-star!"
Reviewed by Carl on 23rd Sep 2026Based in NR32,
Lowestoft
Extension Builder
Member since Apr 2024
ID Checked
I run a business, I have been in the trade for over 25 years, gaining a vast amount of knowledge and experience along the way we specialise in ..... . extensions (i work to detailed drawings to comply with building control) . groundworks . roofing...
Latest Concrete Base Review
"Chris and his Team were great, came when they said they would, respectful and did a great job, cleaned up after they’d finished the job, Would highly recommend this company"
Reviewed by Sandra on 1st Oct 2026
Locations
- Extension Builders in London
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Other trades
- Bathroom Specialists
- Bricklayers
- Builders
- Carpet Layers
- Chimney Builders
- Cleaners
- Door Fitters
- Driveway Specialists
- Electricians
- Fascias Specialists
- Flat Pack Assemblers
- Flat Roofers
- Flooring Specialists
- Garage Convertors
- Garden Clearance Specialists
- Garden Maintainers
- Garden Shed Builders
- Gardeners
- Gas Boiler Engineers
- Gas Fire Engineers
- Gas Oven & Hob Engineers
- Guttering Specialists
- Handymen
- Hard Landscapers
- Heating Engineers
- Internal Renovators
- Joiners
- Kitchen Fitters
- Laminate Flooring Specialists
- Lawn Turfers
- Locksmiths
- Loft Specialists
- Outbuilding Construction Specialists
- Painters & Decorators
- Pebble Dashers
- Pest Controllers
- Plasterers
- Plumbers
- Porch Builders
- Radiator Engineers
- Roofers
- Shower Specialists
- Staircase Specialists
- Tarmac Driveway Contractors
- Tilers
- Tree Surgeons
- Underpinning Specialists
- Window Specialists
- Wooden Decking Installers
- Wooden Fence Specialists
See more trades
Our Reviews
All reviews are submitted by homeowners who have had work completed as part of using our service. Whilst every effort is made to verify and check reviews, we ask all homeowners to conduct their own research and follow our Homeowner Checklist before hiring.
To understand more about our reviews process, please visit our Reviews Policy.
Find Extension Builders Near You
Average Daily Cost of an Extension Builder
How Much Does an Extension Builder Cost?
The cost of hiring an extension builder will depend on your location, the size of the project and the amount of work involved. On average, builders charge around £150–£300 per day, although rates can be higher in London and the South East.
For larger projects, extension builders will usually provide a quote for the entire job rather than charge an hourly or daily rate. This will depend on the type of extension you're planning, the complexity of the work and whether additional tradespeople are needed.
Before hiring an extension builder, make sure you understand what's included in the price. Ask whether the quote covers labour, materials, waste removal, VAT and project management.
Using MyJobQuote, you can compare up to 3 no-obligation quotes from local extension builders to find someone who suits your project and budget.
Get a Price for your JobCosts of Extension Builder Jobs
Glass Room Extension Cost
£40,000
Garden Room Cost
£32,000
Cost to Extend Over Garage
£26,000
Flat Roof Extension Cost
£50,000
Over 1 million homeowners and over 50,000 tradespeople
use MyJobQuote nationwide each year
Extension Builders Near You
Need an extension builder? We have extension builders all over the UK so no matter where you are, we can help.
Extension Builders in London
Extension Builders in Manchester
Extension Builders in Birmingham
Extension Builders in Edinburgh
Extension Builders in Cardiff
Extension Builders in Sheffield
Extension Builders in Bristol
Extension Builders in York
Extension Builders in Liverpool
Extension Builders in Glasgow
Extension Builders in Nottingham
Extension Builders in Derby
Extension Builders in Stoke
Extension Builders in Newcastle
Extension Builders in Coventry
Extension Builders in Southampton
Extension Builders in Reading
Extension Builders in Preston
See all locations
Hiring an Extension Builder
Before hiring an extension builder, check their customer reviews and examples of previous work to make sure they're suitable for your project. It's also worth asking about public liability insurance and whether they'll use subcontractors for any of the work.
Discuss when they can start, how long the extension will take and what's included in the quote, such as labour, materials, structural work and VAT. Make sure you have a written contract covering payment schedules, unexpected costs and building regulations before work begins.
Find an Extension Builder
Extension Builders FAQs
What Does an Extension Builder Do?
Home extension builders carry out the main construction work for a home extension, including foundations, walls, roofing, structural work and often internal finishes.
How Much Does a House Extension Cost?
The cost depends on the size, type of extension, materials, location, structural work and level of finish. A typical rear extension adding a single room may cost between £25,000 and £40,000, although larger projects can cost considerably more.
Do I Need Planning Permission for an Extension?
Some home extensions fall within permitted development rights, meaning planning permission may not be needed. However, there are exceptions depending on the location, size, height and property type. Rules also differ across England, Wales, Scotland and Northern Ireland. If you aren’t sure about planning permission, contact your local council's planning department for advice before starting work.
Do I Need Building Regulations Approval for an Extension?
Most house extensions require building regulations approval. These cover areas such as structure, insulation, electrics, drainage, fire safety and ventilation. Your builder should understand what's needed to comply with the relevant building regulations.
How Long Does a House Extension Take?
Smaller home extensions can take around 3 months to complete. A double-storey extension may take around 4 to 5 months. Timescales depend on the complexity of the job, availability, weather conditions, design and planning requirements.
Do I Need an Architect for an Extension?
Many homeowners choose to use an architect to provide drawings, design advice and help with planning applications, especially for larger or more complex extensions. However, an architect isn't always necessary, and other building design services may be suitable depending on the project.
Can I Live at Home While an Extension Is Being Built?
If you are having a small extension built, then it is likely you can stay in your home during construction. However, if the extension is large and needs structural changes, you may want to move out of your home temporarily, as you may not have access to bathrooms or your kitchen. Lighting and heating may also be affected.
What Should Be Included in an Extension Quote?
All quotes for a home extension should clearly explain what work is included, such as:
Labour
Materials
Structural work
Foundations
Roofing
Electrics
Plumbing
Plastering
Waste removal
VAT and any exclusions
Make sure you understand what is included before agreeing to the work.
