Extension Builders in Streatham

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (18 reviews)

Easily find verified Streatham Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in Streatham.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated extension builders in Streatham

3341 Results

Sort by:

Ionut
Rating: 5 out of 5
Extension Builder in Streatham
Hi, I’m Jon (Ionut) Bursuc — a qualified and fully insured general builder with 20+ years of hands-on experience, specialising in house extensions and structural conversions across residential properties. I carry out rear extensions, side and wraparound extensions, loft conversions (including dormers), garage conversions, knock-throughs, and full internal reconfigurations. Experienced with structural steel installation (RSJs) and working from drawings or building control requirements. I manage projects from start to finish — groundwork, structure, roofing, first fix, and final finish — coordinating all trades to keep work progressing efficiently, safely, and to a high standard. Known for reliability, clear communication, tidy sites, and transparent pricing. I aim to minimise disruption while delivering durable, high-quality results that add real space and value to your home. Free quotes provided. All work carried out professionally and completed on schedule wherever possible.
Get in touch
Latest review:
Extensions- 2 Jan 2018
John and his team were fantastic!! Really helpful, polite, good problem solvers, reliable and always reachable and ready with advice. We’re so happy with our extension and would certainly hire John again.
Ernest Sergy Building Services Ltd
Rating: 5 out of 5
Extension Builder in Streatham
Ernest Sergy Building Services LTD is a general building company specialising in demolition, structural and ground work, interior and exterior refurbishments, renovations, loft conversions, extensions and other aspects of general building work.
Get in touch
Latest review:
Extensions- 26 Aug 2022
Very happy with the work from Ernest. Nothing was too much trouble, and any issues along the way he just sorted. The team worked extremely hard and were all polite. I’d really recommend working with Ernest and his team and will be using him again for sure.
Venus Constructions Ltd
Rating: 5 out of 5
Extension Builder in Streatham
Hi, thanks for taking time reading.. our team at Venus Constructions specialises in all types of residential works and our range of services covers complete refurbishment, conversions, external buildings, patio, turf, driveway, decking, fencing, brickwork, blockwork, rendering. Depends of team member we have years and the necessary experience based on the works needed. Listening to the clients needs we assure with punctuality high quality results and workmanship of our friendly team.
Get in touch
Latest review:
Landscaping- 28 Mar 2022
Gianni and his friend did an amazing job on our garden grass and planter. They came to see the garden before providing us with the quote. They were very professional, punctual thorough and quick. We were very impressed that they started the job the following day and that they were able to provide all the materials. We will definitely recommend them to friends and family.
Perfectloft
Rating: 5 out of 5
Extension Builder in Streatham
Converting your loft into a beautiful living space may seem like a daunting task, but the results are always going to be worth the painstaking process. The loft conversion procedure does not have to be that difficult; all you require is to hire right people to do the right job.
Get in touch
Latest review:
Kitchen Fitting- 4 Nov 2019
Bogdan and Marius were great. They constantly kept us updated with progress and came up with good solutions to any issues they encountered, checking we were OK with them before progressing. They were on time, efficient, helpful and tidied up after themselves. I would definitely recommend them.
Florentin Stoica
Rating: 5 out of 5
Extension Builder in Streatham
I charge 60£ for a home visit and quote. This is to cover for my time and the website fee attributed to each add. If the jobs goes trough, this cost will be included in the final price. Hi, I am Flo, your local handyman with a decade plus of experience. Putting up a frame or building up an house extension, I can accommodate both and everything in between. If you have a project in mind i have a decade plus of experience that could come in handy so let’s get in touch. Yours sincerely, Florentin.
Get in touch
Latest review:
Conversions - General- 9 Aug 2026
Florentin created a new entrance to our house by cutting through an existing brick wall, creating two pillars and laying a path with paving bricks to connect the entrance to an existing path. He did an excellent job, working carefully, professionally and cleanly. Although not specialising specifically in heavy brick work, he clearly knew what he was doing, had the right machinery and had the skills necessary to do the job. Florentin is also courteous and well spoken. I am pleased to recommend him without hesitation.
Radus Carpentry
Rating: 4.9 out of 5
Extension Builder in Streatham
Carpentry services We have a large skills range and provide a multitude of carpentry and joinery related Fire Door Installation (Certificate) Flooring Installations Floorboards & Joists Doors - Internal & External Door Locks Bathrooms Kitchens Integrated Appliance Fitting Boarding Up & Securing Burglary Damage Ceilings Cupboards Fitted Furniture Plasterboard Property Refurbishment Radiator Cabinets Shelving Wardrobes Window & Frame Repairs Window Installation Window Locks Worktops
Get in touch
Latest review:
Carpentry- 19 Sep 2026
In time, professional and quick. Recommend!
Home improvement
Rating: 4.4 out of 5
Extension Builder in Streatham
“Reliable handyman with 7+ years of experience in flooring, plastering, and general home repairs. I take pride in clean work, clear communication, and finishing jobs on time. Available for small to medium projects — no job too and general plumbing
Get in touch
Latest review:
Painting & Decorating- 17 Sep 2026
Sher provided a quote quickly and carried out the work within a couple of days. The cost was reasonable and the work carried out exactly as he said. Pleased with the result, will use again.
Swift Building Masters
Rating: 4.9 out of 5
Extension Builder in Streatham
General Builder of over 40 years Experience. Carpentry & Joinery Background. I have worked on large and small Projects, Repair, Refurbishment, Extensions, Loft conversions and New-builds. Recently become a member of Federation of Master Builders. ALL WORK QUALITY ASSURED
Get in touch
Latest review:
Extensions- 5 Nov 2016
Leslie carried out the following works: chemical damp injection to walls on rear extension, reroute down-pipe, repair fracture on rear wall, install gutter hedgehog. Hopefully, this will resolve some of the issues we had with damp, a blocked down-pipe and an overflowing gutter. Leslie arrived on time on the first day but was delayed a few hours the next day. However, the work still was done within two days as expected. Thank you!
Tawfik Werfalli
Rating: 5 out of 5
Extension Builder in Streatham
At Miko Construction, we specialise in high-quality residential refurbishments, extensions, and fit-outs. We’re a small, experienced team that takes pride in delivering well-crafted work with clear communication throughout. Whether it’s a full home renovation or a bespoke interior project, we bring a personal, hands-on approach from start to finish.
Get in touch
Latest review:
Tawfik’s team was very professional and very knowledgeable, they done a great work including helping me with the design and understanding the process required to complete a project at this size, he completed the electrical work tested it and also included great ideas with the LED lights that made A beautiful design at the end, he also recommended a lot of subcontractors in the area are very competitive in their price and practically manage the project with me from inception to completion.
Pali contractors Ltd
Rating: 5 out of 5
Extension Builder in Streatham
With over 15 years of experience in the construction and building trades, we’ve built a strong reputation for quality workmanship and reliable service. Based in Croydon, we work throughout South London and nearby areas, offering a wide range of professional building services. Our team specialises in carpentry, painting and decorating, extensions, loft conversions, kitchen installations, tiling, home improvements, and general building maintenance. We take pride in completing every project to a high standard, with careful attention to detail and a professional finish. We believe clear communication, honesty, and respect for our customers’ homes are key to great service. From small maintenance jobs to full renovations and extensions, we approach every project with the same level of care and dedication. Our goal is to make the process straightforward and stress-free, delivering results that last and ensuring our customers are completely satisfied with the final outcome.
Get in touch
Latest review:
Handyman- 10 Apr 2026
He arrived on time and fixed the job as agreed. I then asked him to do another job widening the shed door, which he also completed well. I’m happy with the work and would recommend him.
Ekd Construction Ltd
Rating: 5 out of 5
Extension Builder in Streatham
We create and improve spaces through collaborative partnerships with our clients and meticulous, professional craftsmanship. We ensure every project reflects both your vision and our shared values. And we know the business process from start to finish. Works we carry out: Interior & exterior painting • Wallpaper hanging & removal • Woodwork, staining & sealing • Kitchens, cupboards & decking Commercial spaces • Colour consultation • Damage repair & mould treatment • Stud partitions • Joists • Sub-floors • Door frames • Staircase fitting • Engineered flooring • Doors • Skirting Architraves • Kitchen fitting • Bespoke cabinetry • Decking • Custom work • Windows • Flat roofs
Get in touch
Latest review:
Painting & Decorating- 7 Sep 2026
Thank you Kaylum. Refurbished windows look great. Excellent job. Harley
Tap 2 Loo Plumbing Services Ltd
Rating: 5 out of 5
Extension Builder in Streatham
I am a tradesman that has fifteen years of experience in all aspects of construction. Building extensions, loft conversion, kitchen fitting , bathroom fitting, refurbishments and fiberglass roofs
Get in touch
Latest review:
Kitchen Fitting- 13 Apr 2023
Thank you Kyri (and team), I’m very pleased with my new kitchen and highly recommend your work, your attention to detail is outstanding and made a huge difference to the finish. A lot of preparation work was needed but it was worth it in the end and I’m very happy.
Ifa construction ltd
Rating: 5 out of 5
Extension Builder in Streatham
House extension, lofts conversion, house refurbished, and new build
Get in touch
Latest review:
Restoration & Refurbishment- 2 Jul 2023
AJ was thorough, friendly and thought things through. I would recommend him.
Akili_handyman
Rating: 5 out of 5
Extension Builder in Streatham
Hi, I’m Akili specialise in high-quality home renovations across South London, including bathrooms, kitchens, carpentry, flooring, plastering, painting, decking and complete property refurbishments. I take pride in delivering reliable workmanship, clear communication and leaving every project clean and tidy. Whether it’s a small repair or a full renovation, my goal is to provide a professional finish that lasts. Quality, honesty, and respect in every project. 👍
Get in touch
Latest review:
Bathroom Fitting- 6 Sep 2026
We had a great experience with Akili who helped us with a full bathroom renovation. Excellent work ethic and genuinely cares about what he does, would 100% recommend and will use for future jobs. Thanks again!
South &East London Builder's
Rating: 3.7 out of 5
Extension Builder in Streatham
........We are specialising Bathrooms and kitchens fitters,Handymen,paiters,plumpers, electricians,Flooring Fitters,all house refurbishments .Our work is completed to High standart and home left clean and tidy,friendly service. Also we do Extension Lofts Roofing Plastering Sounds proofing Damp proofing And many other trades Don't hesitate to contact us for any jobs small or big we are available 24/7 free quotation Many thanks
Get in touch
Latest review:
Extensions- 6 Mar 2023
Valerian unfortunately let me down dreadfully. He agreed a price we signed a contract but then decided to walk off site once it became clear he was unable to do plumbing work. He refused to assist in appointing another contractor and didn't pay his own workers.
JB Landscaping/Building
Rating: 5 out of 5
Extension Builder in Streatham
I’m a sole trader with over 20 years experience in landscape gardening and building works. I do all types of work from handy man jobs right threw to small extensions I can design your garden as well as construct it. My work is done to a very high standered and comes with a years garrentee on all workmanship
Get in touch
Latest review:
Bricklaying- 7 Oct 2018
John was brilliant - he started the job exactly when he said he would, and finished a day earlier than expected. His work was exceptional and we were really happy with the fence once finished.

3.9

Top rated Extension Builders

Our Extension Builders in Streatham, are rated 3.9 out of 5 based on 18 reviews from customers like you.

Quality screening

Easily find verified local tradespeople. Just post your job to get quotes from tradespeople near you across the UK.

What types of services are offered by local extension builders in Streatham?

Building an extension is a major milestone for any home. It’s not just about adding extra space, it’s a big step that can transform how you live day to day, opening up new possibilities for comfort, lifestyle, and family needs.

This is why it’s so important to find the right extension builders in Streatham for you. They can help with a variety of tasks and projects, including:

Extending your home with an extra room
Two+ storey extensions
Adding partition walls to create more rooms
Building annexes or external structures

To find the right extension builder near you, simply post your job on MyBuilder. Explain the type of help you’re looking for, and then home extension builders in Streatham who are available and interested can respond to your post.

Browse profiles, read customer reviews and get quotes from your chosen Streatham extension builders, all before you decide who to hire.

What are the hourly rates of extension builders in Streatham?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in Streatham will charge between £16 and £42 per hour.

Single-storey rear extensions cost between £20,000 and £60,000 depending on size and finish.
The cost of double-storey extensions, which add more space and value, can range from £100,000 to over £170,000.
Larger wrap-around extensions that combine multiple extension types can range from £40,000 to over £120,000.

The cost of an extension will vary depending on your property. For instance, extending in certain areas may require structural adjustments to ensure stability, which can increase your material and labour costs.

To get an accurate price for your home extension, request detailed quotes from several Streatham extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Streatham home extension project is likely to cost.

Find extension builders in Streatham with MyBuilder

Hiring the right extension builder in Streatham with MyBuilder couldn’t be easier. Just follow these simple steps:

Step 1: Post your extension project on MyBuilder

Whether you’re planning a single-storey extension, a loft conversion, or adding a new room, post your job on MyBuilder to find local Streatham extension builders. Once your job is live, we’ll share it with home extension builders in Streatham who can express their interest.

Step 2: Compare different extension builders in Streatham

When you start receiving interest, review profiles of local Streatham extension builders, check their previous work, and read real customer reviews. Ask about timelines, materials, and request detailed quotes.

Step 3: Hire Streatham extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Streatham, compare their experience, guarantees, and costs before choosing who to hire.

You’ll also have confidence knowing that every tradesperson on MyBuilder is verified through several checks, including:

ID verification: When a tradesperson joins MyBuilder, we ask for a valid ID, such as a passport, ID card, or eIDAS certificate.
Company verification: For tradespeople operating under a company, we make sure every tradesperson has a registered business.

Did you know? Our continuous monitoring and complaints process ensures that tradespeople who don’t meet our standards are promptly removed from MyBuilder’s platform.

Streatham extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Streatham extension builder before hiring?

Before hiring an extension builder in Streatham or extension building company in Streatham, ask a few key questions to make sure you’re choosing the right professional for your home extension project.

What qualifications and experience do you have as an extension builder in Streatham?

An extension builder in Streatham should have a strong track record with similar projects and relevant building qualifications or trade memberships, such as the Federation of Master Builders (FMB) or TrustMark.

Will my home extension meet all building regulations and planning requirements?

Your Streatham extension builder should ensure the project complies with Building Regulations and, where necessary, handle or assist with planning permissions. Ask how they manage building control inspections and what documentation you’ll receive once the project is complete.

What experience do you have with similar extensions in Streatham?

Ask to see examples of their previous work, or view examples of their work on MyBuilder. Ideally projects similar to yours in scale and design. This helps you assess the Streatham extension builder’s ability to deliver a result that meets your expectations.

How long will the extension take to complete?

Extension project timelines can vary depending on size, complexity, and weather. A typical single-storey extension might take around 8 - 12 weeks. Request a detailed schedule so you know what to expect and when key milestones will be reached.

Do you offer a guarantee for your work? Most Streatham extension builders offer a guarantee or warranty on their work, often between 1 and 10 years depending on the project and materials used. This gives you assurance that any issues will be resolved after completion.

If you still have questions about the professional you are looking to hire, we have a full detailed guide on hiring the right builder here.

FAQ: Common questions about home extensions in Streatham

Can an extension builder in Streatham help with planning permission?

Yes, many extension builders in Streatham can guide you through the planning process. They can help prepare drawings, advise on local requirements, and liaise with your local council to ensure your project meets all necessary regulations.

Can an extension builder in Streatham handle everything from design to construction?

Many Streatham extension builders offer full design-and-build services, managing both the architectural planning and construction stages. Ask your builder whether they can provide a complete package or if you’ll need to hire an architect or designer separately.

Will an extension builder in Streatham help with materials and finishes?

Yes, most extension builders in Streatham can source materials and offer advice on finishes that suit your design and budget. You can also choose to supply certain materials yourself, just make sure this is agreed upon before work starts.