Extension Builders in Streatham

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

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Some of our top rated extension builders in Streatham

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Candor Construction & Maintenance Limited
Rating: 4.5 out of 5
Extension Builder in Streatham
We are a friendly, reliable and honest company engaged in construction and maintenance work. We have vast experiance in the refurbishment and extension sector and work on all types of buildings both residential and commercial. Candor Construction have successfully completed a range of high quality extensions and refurbishments.
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Latest review:
Carpentry- 13 Nov 2016
Excellent in every respect, easy to communicate with, clean tidy and work was to a high standard. Would happy recommend these guys to all.
Adriana1995
Rating: 5 out of 5
Extension Builder in Streatham
We have over 15 years of experience in the carpentry and windows fitting ( wood , PVC & aluminiu ) field and we are a serious and professional team dedicated to every project we undertake. We are fully involved in the execution of each job and pay close attention to every detail to ensure the final result is flawless. We focus on quality, fairness, and meeting agreed deadlines, providing durable solutions and high-class finishes. Our priority is the complete satisfaction of every client and building long-term collaborations based on trust and professionalism. If you would like to see photos of our previous work and receive a fair and accurate price, please do not hesitate to contact us.
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Latest review:
Kitchen Fitting- 18 Jun 2026
The best carpenter is working very good and professional very happy
Antonio Abreu
No reviews yet
Extension Builder in Streatham
I have been working in construction for 20 years. I first started as a Carpenter did my NVQ Level 2 then worked for a company fitting kitchens and bathrooms for 2 years. After that started working on my own and then build a small team. We now specialise in lofts, extensions, full house refurbishment, kitchen fitting bathroom fitting and decorating. We are very professional, very easy to work with, and have loads of excelent references.
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Alex
Rating: 5 out of 5
Extension Builder in Streatham
Hi I offer good quality work which includes general construction works, painting interior, exterior, walls and ceiling repair and wood work I also offer handy man jobs, decking installation and repair,groundwork jobs.
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Latest review:
Carpentry- 4 Jun 2026
I recently had Alex install my 12-foot pegola, and I couldn't be happier with the result. From start to finish, Alex was patient, listened carefully to what I wanted, and took the time to ensure everything was done properly. He is hardworking, reliable, respectful, and kept the work area tidy throughout the project. What impressed me most was how efficiently he worked without compromising on quality. The pegola was completed to a very satisfactory standard, and the finished result looks fantastic. I would have no hesitation in recommending Alex to anyone looking for a skilled and trustworthy tradesperson. I would gladly use his services again for future projects.
Building London
No reviews yet
Extension Builder in Streatham
Building London is a specialist extension and conversion firm based in Wimbledon. Our unique focus is on helping you realise the best increase in property value while recycling and re-using materials wherever possible to keep costs down. We work with you at the design stage or with your existing designs, and promise you an excellent result with a well managed project. While we are new to MyBuilder, we have completed many extensions and conversions across London and have come together as one business after many years of partnership. We hope you will let us quote for your project and look forward to working with you.
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Distinct Ltd
Rating: 5 out of 5
Extension Builder in Streatham
Distinct lawn solutions are a lawn specialist company who provide a first class service. Hard work, trust and professionalism are main aims. We can turn any garden into a wonderful landscape. Work is finished to a guaranteed high standard. We have a great, ever growing online portfolio to view.
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Latest review:
Landscaping- 14 Dec 2014
Great job by Jordan. All was done on time without compromise on quality. Thank you
Delta Alpha Building Services
Rating: 5 out of 5
Extension Builder in Streatham
Delta Alpha Building Services is a family run business with 35 years experience in domestic construction services. We undertake works from smaller jobs (eg. Door hanging) to large construction works (eg. Extensions and conversions).. All our tradesmen are fully qualified and insured. Free phone consultations and estimates, prompt reply and service. We treat your home as if it were our own.
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Latest review:
April 2025 Delta Alpha built a raised decking to the back of my garden. We were very happy with the work and would definitely use this company in the future.
ritz builders uk ltd
Rating: 5 out of 5
Extension Builder in Streatham
Ritz Builders UK Ltd can take care of any property renovation or house extension, from complex double basement developments to a new builds. Our builders have worked on various type of properties across UK, giving them a new light and converting them into modern and contemporary living spaces. Our professional construction team, who come supported by a dedicated workforce, are well regarded by commercial and residential property developers.
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Latest review:
The builder was reliable and dependable. Work was neat and to taste .
P&M Property Renovation ltd
Rating: 5 out of 5
Extension Builder in Streatham
P&M Property Renovation Ltd is the company specialised in house and flat renovations, carpentry, flooring, kitchens, bathrooms, tiling, painting & decorating, loft, and extensions.
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Latest review:
Carpentry- 12 Mar 2022
A fantastic experience, pawel done a fantastic job highly professional and attention to detail ,on time protected all the floors prior to work , lots of helpful advise and at a really competitive price beautiful media wall created all in a day!👍
New Vision Designs Limited
Rating: 5 out of 5
Extension Builder in Streatham
Welcome to New Vision Designs, where craftsmanship and attention to detail converge across a spectrum of construction projects. Our proficient team excels in Residential Refurbishment, Commercial Fitout, Full Design and Build services. From METSEC and SFS installations to Drylining, Painting, Decorations, and Mechanical & Electrical (M&E) work, we deliver exceptional results. With a steadfast dedication to quality, we bring extensive expertise and proficiency to each project we undertake.
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Latest review:
Painting & Decorating- 1 Dec 2024
Jay and the team at New Vision Designs were excellent - I was able to leave house, them with keys, returning to tidy, well organised project lasting 5 days. Throughout they sent me whatsapp video updates, kept me in the loop on any milestones... so so greatful and will be using them again soon !
ALMO Property Group Limited
Rating: 5 out of 5
Extension Builder in Streatham
ALMO Property Group delivers comprehensive property services, from maintenance and renovations to consultancy and management, with efficiency, expertise, and attention to detail. Backed by experienced professionals and full insurance coverage, we provide a dependable service, clear communication, and consistently high standards on every project, with a focus on providing value for all our clients.
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Latest review:
We recently completed a full house refurbishment including a 4-metre rear extension, dormer loft conversion, and complete interior renovation with ALMO Property Group—and I genuinely couldn’t recommend them more highly. From the very beginning, the team managed everything seamlessly, from planning and design through to execution. What could have been an incredibly stressful process was made smooth, organised, and surprisingly enjoyable thanks to their professionalism, communication, and attention to detail. The quality of workmanship throughout the project has been exceptional. Every stage was handled with care, precision, and a clear commitment to delivering a high-end finish. The team were reliable, efficient, and always kept us informed, which gave us real peace of mind. A special mention has to go to Ameer, who was absolutely outstanding from start to finish. His dedication, responsiveness, and willingness to go above and beyond made a huge difference. He was always on hand to answer questions, offer solutions, and ensure everything ran perfectly. ALMO Property Group have completely transformed our house into a beautiful home, and we are beyond happy with the results. If you’re looking for a trustworthy, skilled, and professional team, I would highly recommend them.
L&G Informations Ltd
No reviews yet
Extension Builder in Streatham
L&G Installations Limited have been established for 14 years. Our main objective is to provide a quality service for our customers. Pride quality work which led to the expansion of the company and employed up to 12 professional fitters/ engineers. The fitters & engineers are trained to a high standard, investing time and commitment on Velfac /Rational Dovista Group & other double glazing products.
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E V Builders
No reviews yet
Extension Builder in Streatham
With over 15 years experience in construction/building, loft conversions, property extensions, full property refurbishments, roofing, new kitchens or bathrooms, plumbing, plastering, painting and decorating, and general day to day property maintenance.Sectors we specialise in Bathrooms Kitchens Extensions House renovation Painting and decorating Loft conversion
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HUB Property
No reviews yet
Extension Builder in Streatham
We provide architect drawings and party wall services. Our expertise, attention to detail, and client-centric approach set us apart. Contact us for accurate and compliant drawings and expert guidance in resolving party wall matters. Satisfaction, professionalism, and integrity are our priorities.
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Rosa Construction
No reviews yet
Extension Builder in Streatham
From internal renovations that breathe new life into your space to building extensions that expand possibilities, and loft conversions that elevate residential and commercial structures—we have the experience and skill to handle it all.
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Builders Are Us Ltd
Rating: 5 out of 5
Extension Builder in Streatham
With over 10 years’ experience in Loft Conversions, Extensions and Refurbishments, BuildersRUs offer the complete home service. Our dedicated team will help you transform your home, managing all aspects of the process including design, planning, regulations and completed build to the highest specifications. Let us realise your home’s potential, creating your ideal master bedroom, a kid’s gaming room, a quiet home office, or that dream kitchen. Call us today for great work at great prices.
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Latest review:
Bili did a amazing job. He and he's team has been extremely helpful and very professional. Bili listened, made good suggestions, clean and always on time. They finished the job perfectly and on schedule. It was pleasure working with Bili and his team and I would recommend them without hesitation.

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.

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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.