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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Statecraft Building Ltd.
Rating: 5 out of 5
Extension Builder in Streatham
We strive to provide the best building services posible within and outside London. Our company has been built on continuous recommendation, repeat custom and quality workmanship. We offer full building services and you can be sure we`ll take care of the job.
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Latest review:
Milen, initially came as I had a leak in my ensuit where the tiles had lost their grout. He was very honest in giving me advice, and regrouted at a very reasonable price. He then came a month later to remove the tiles in the shower and replace the plaster protection board, then retiled. He purchased all the products and gave me advice on the most valuable sustainable tiles. The work was carried out a to very high level, I would most definitely hire Milen in the future, and highly recommend him.
Nailed it Building and Refurbishment Ltd
No reviews yet
Extension Builder in Streatham
As a team, we offer a complete service whether a small apartment or large town house. We can also improve the use of space in your home through extensions and loft conversions, this is why it’s a good idea to hire our team to carry out your refurbishment. Fitting around you and your schedule, with Nailed It Building and Refurbishment Ltd you can be sure the job is done right.
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Sadia
Rating: 5 out of 5
Extension Builder in Streatham
"Stylish Kitchen & bathroom Fitting Service with prices guaranteed between £4000 to £5000, you can trust us to deliver top-notch service Transform your kitchen into a modern masterpiece with Quality Builders Limited! Our reliable team specializes in fitting any kind of stylish Wren B&Q kitchen, complete with gas cooker, washing, and cooking machine connections.
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Latest review:
Quality Builders completed a remarkable domer and loft conversion for us on 2/10/2023, and we couldn't be more pleased with the results. From the outset, their professionalism and attention to detail were evident. The initial consultation was thorough, and they took the time to understand our vision for the space. Throughout the project, communication was excellent, with regular updates on progress and any necessary adjustments. The craftsmanship displayed by Quality Builders was exceptional. Every aspect of the conversion, from structural work to finishing touches, was executed with precision and care. Their team of builders and contractors demonstrated expertise and skill, resulting in a finished product that exceeded our expectations. Not only did Quality Builders deliver on time, but they also adhered to budgetary constraints without compromising quality. Their transparency and honesty throughout the process gave us peace of mind and confidence in their abilities. The transformation of our space is truly remarkable. The addition of the domer and loft has added both aesthetic appeal and practical functionality to our home. The new space is light-filled, spacious, and seamlessly integrated with the existing structure. Overall, we cannot recommend Quality Builders highly enough. Their commitment to excellence, attention to detail, and professionalism set them apart in the industry. If you're considering a home renovation project, look no further than Quality Builders for exceptional results.
Synergy Construction Group Ltd
Rating: 4 out of 5
Extension Builder in Streatham
Synergy Construction Group carry out a vast amount of different works. With our in house team of tradesman we deliver any project to very high standards. We have over combined 40 years experience and can deal with any type of work. Our previous projects show what high standards we work to
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GMG - Georgian Masters Group Limited
Rating: 5 out of 5
Extension Builder in Streatham
Hello. We are a new company, whose team consists of professionals with many years experience working both for residential and commercial property. You can boldly rely on the renovation of your home to our team, convince me the result will exceed expectations.
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Latest review:
Kitchen Fitting- 13 Oct 2024
Great communication, always available to clarify client questions, very diligent. Job well done and great finishing's. Thanks a lot Natella and team for all the effort
Fatjon Ndrevataj
Rating: 5 out of 5
Extension Builder in Streatham
Fatjon Renovations ltd. Own company, van and tools. Painter and decorator, kitchen and bathroom fitter, tiler, plasterer, carpenter, with years experience working in the London area.
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Latest review:
Kitchen Fitting- 16 Feb 2026
Fatjon did a great job on our kitchen and took good care of his surroundings.
gurtej building works
No reviews yet
Extension Builder in Streatham
hi
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DM Builder
No reviews yet
Extension Builder in Streatham
I am a general builder and have 15 years experience in the trade. I have worked for large companies which have enabled me to gain a vast knowledge in many areas. I have completed large refurbishments to smaller projects. I work with qualified Electricians and plumbers so am confident that I can complete tasks.
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Gibbons & Sons
Rating: 5 out of 5
Extension Builder in Streatham
Gibbons & Sons are a family run business and been trading for 30 years. Our areas of business are extensions, kitchen fits, summer houses, loft conversions & general building.
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Latest review:
Extensions- 24 Jan 2021
We chose Gibbons and Sons for our Loft extension and new bathroom as they was one of the few firms who we contacted and was more then happy for us to view their workmanship during and after the build so we good see the quality of their works. They have been courteous, polite, very patient and accommodating to our chopping and changing of ideas. They helped us to bring our visions to life and offered advice when required without being pushy and driving a hard sale. They have been open and honest with our ideas and their recommendations and in some cases suggested a alternative more cost effective option. All in all we would highly recommend Gibbons and Sons for all types of building works.
4 You Residential Limited
Rating: 5 out of 5
Extension Builder in Streatham
We have over 18 years of experience in residential and commercial refurbishment. We are skilled team of managers, architects, builders and craftsmen, competitively priced and flexible to suit your needs. We specialise in building basements, extensions, loft conversions and carry out full house refurbishments as well as working on smaller projects like kitchens, bathrooms, joinery and fit-out. Our team is energetic, fully insured, certified and recommended by long list of happy clients.
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Latest review:
Groundwork & Foundations- 18 Jul 2019
My wife and I have been truly impressed by Victor and Tom's quick turnaround and willingness to get the job done to an extremely high standard. Their men were friendly, efficient and tidy which is invaluable when taking on any new and daunting property project. As a result of their efficiency we are hoping to work with Victor and his team again in the coming months and would highly recommend them to anyone looking for a reliable and professional contractor.
Tota Spark Ltd
Rating: 5 out of 5
Extension Builder in Streatham
Hi there.I have established this company because I like the work I do and the most important thing is that I want that every client to receive the best of service.I undertake electrical work and general building works.
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Latest review:
Electrical- 10 Sep 2019
Nice, trustworthy guy. Quick reply and on time. Will definitely call again next time I need an electrician.
EmiMata
Rating: 5 out of 5
Extension Builder in Streatham
All building maintenace Painting All sort of Carpentry Building Gardening
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Latest review:
Groundwork & Foundations- 29 Nov 2025
Working with emi was a breeze
Vector Living
Rating: 5 out of 5
Extension Builder in Streatham
Vector Living is a highly experienced team of building professionals with over 23 years in the construction industry. Our skilled tradespeople, combined with an extensive network of trusted suppliers and industry contacts, allow us to deliver quality results on every project. We pride ourselves on being approachable, collaborative, and easy to work with. By taking the time to truly understand your needs and requirements, we ensure a smooth process and a low-risk, premium-quality outcome. Our success is built on clear and consistent communication. We keep our clients fully informed at every stage of the project, maintaining transparency from start to finish. No matter the size of the project, you’ll have a dedicated single point of contact — providing clarity, accountability, and complete peace of mind throughout the entire journey.
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Latest review:
Extensions- 2 Oct 2025
Ash and his team did a great job. My parents were very happy..the team are approachable and tailors the work to your budget well highly recommended.
HOLTAN
Rating: 4.9 out of 5
Extension Builder in Streatham
Hello everyone. Thank you for taking out time to read our profile. We specialize in Extensions,Lofts Conversions,Property Maintenance,Refurbishments, Lettings properties repairs, Kitchens,Bathrooms,Carpentry,Decorating, & Handyman jobs. Quality finish with attention to detail is our priority. Liability insurance available.
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Latest review:
Painting & Decorating- 21 Aug 2024
Very efficient and clean job. Would highly recommend Holtan.
Constructum Code Ltd
Rating: 4.2 out of 5
Extension Builder in Streatham
****** Constructum Code building company ****** We offer various construction services, from fence building to renovation work, extensions, home building and loft conversions. We also provide a wide range of interior building and renovation services. We have highly qualified project managers with over 22 years of experience in construction & building industry. WE OFFER: *The Complete Service* *10 Year Guarantee* *Free Estimates* *Competitive Prices* *Full Building Control Approved Installer* *Excellent Designs and Unbeatable Workmanship* *Fully insured building service* Constructum Code, at its core, is a construction company through and through. We are general contractors who can provide a wide range of building services, both small and large. Services Provided: 3D Rendering, Basement Conversion, Building Design, Complete Bathroom Renovation, Complete Kitchen Renovation, Conservatory Design & Installation, Custom Build Homes, Home Renovation, House Extensions, House Plans, House Restoration, Interior Architecture, Interior Design, Loft Conversion, Loft Restoration, New Home Build, Project Management, Balcony Design & Construction, Concrete Construction, Concrete Repair
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Latest review:
I ordered repairs from the Constructum Code company, I wanted to create a play area. The guys tried to select all the materials and work technologies to suit my budget. The tiles on the walls and floor were laid well. The work was completed efficiently and on time. I recommend this company...
Tonga Mboka Construction ltd
No reviews yet
Extension Builder in Streatham
Tonga Mboka construction ltd, is a UK, London based construction company established since 2023. By a group of experienced and qualified construction engineers that have work in the industry and achieved high standards projects. We value our customers and their dreams project are our number on priorities.
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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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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.