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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Marangoni Construction
Rating: 5 out of 5
Extension Builder in Streatham
We are dedicated to building quality projects and our wealth of experience and efficient working methods mean that with us on board, you get more - more choice, more cost savings and a quicker turnaround.We are a hard workers,good organiser,sociable,loyality,honest
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Latest review:
Hard working and experienced professional with large experience in mid-sized residential projects. Dyone always tries to go the extra mile to please the client. He has worked in several European countries giving him access to better knowledge of materials and suppliers. Great to work with.
Peter Build
Rating: 5 out of 5
Extension Builder in Streatham
We offer professional service for all your local building requirements. With our team of professionals no job is too small or too big to handle. From Small Brickwork jobs to large extension work, we can do it. Our team of professionals have years of experience and know-how to carry out all jobs to the highest quality without charging extortionate prices.We are a small friendly local Builders with over 20 years experience!
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Latest review:
Bathroom Fitting- 5 Nov 2019
I met up with Peter, told him what needed doing and he provided a detailed quote within days. I handed over a set off keys and basically left him and his team to get on with it! This was a time restricted job, he purchased all the material and provided all the receipts. I returned a week later to find the job completed to the highest standard surpassing my expectations. I will definitely be working with Peter again in the future and I would highly recommend him.
Bel London Construction Ltd
No reviews yet
Extension Builder in Streatham
Hi We have got 15y experience. We are a specialists with: -Basements -loft conversions -extensions - general Renovation
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Artem
No reviews yet
Extension Builder in Streatham
Hi Everyone!!! I’m a reliable and experienced handyman based in South London with over 13 years in construction. I specialize in all kind of repairs, refurbishing, bathroom renovation, kitchen renovation, lofts conversion, extensions, electricity ,plumbing, painting, and general maintenance. ✅ Fast, clean, honest service ✅ Always on time — I respect your time and home ✅ Fully equipped + liability insured No job too small — message me for a free quote!
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NB Building services
Rating: 5 out of 5
Extension Builder in Streatham
Hi my name is Nikolay and I’m working with small team of 4 people more then 8 years!We are doing loft conversions,house extensions and full refurbishment!We have lot of jobs done and more then happy clients!Have a large range of recommendations!Public Liability Insurance also available!
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Latest review:
Extensions- 9 Oct 2022
We engaged NB Building Services to build an extension (new garage and room at the rear) and extensively refurbish/remodel a bungalow. I met a number of builders/building contractors but I felt immediately comfortable with Nick right from the start. It was the first time we were ever starting such a project and we wanted to follow our instinct and go with someone we could be comfortable with over the duration of the project. Right from the start Nick came across as someone who is genuine and who looks to understand your requirements. Also, as my project had a few uncertainties that could affect the scope of the project I was looking for some flexibility and I felt that Nick and his team could provide that. Nick and his team (Stefan, Boris and Ilco) work very well together as a cohesive team. Nick provided a day-to-day customer contact while scheduling tasks on the building site and coordinating material deliveries. Every member of the team worked a full day and on occasions where it was important to finish something on the day, they would stay late to finish the job. What impressed me most when the work started is that the entire team is multiskilled – they do everything from bricklaying, timberwork, roofing, plaster/skimming etc. This helped me immensely when there were minor changes or modifications. That meant we didn’t have to wait for the bricklayer or plasterer to return to the site again. Nick also operated the heavy machinery like digger/breaker etc. Once the initial structure was complete the team again impressed me with their attention to detail when they moved inside to lay down plumbing, electrical wires, gas pipes etc. Nick and Stefan took the lead on the fine finishing tasks inside while Boris and Ilco provided important support and completed a lot of other tasks inside and out. It was during this critical phase when communication is most important that I appreciated Nick’s effort to keep us informed. As far as quality of work is concerned while we were happy with everything, I think the tiling work of both Nick and Stefan is outstanding. Our project lasted for about 8 months and while there were lots of discussions on areas of the project that I did not understand and I asked a lot of questions and also changed my mind on some things I don’t remember I we ever even had a minor argument. This I felt was an important win. Nick was also generous with his time and provided help to other trades who came on site e.g. window fitters, garage door installers; boiler installers; electricians etc. Nick and his team returned a few months later to lay down a patio with porcelain tiles for us and also a driveway with block paving. Once again Nick and his team discussed with us in detail what we wanted and provided suggestions based on their experience.
Peake Projects (london) Ltd
No reviews yet
Extension Builder in Streatham
With over two decades of experience, Peake Projects, lead by founder James Peake, has successfully completed numerous projects throughout London. Our adept in-house team, which includes an interior design department, collaborates with esteemed architectural firms, tackling diverse projects: from intricate joinery work and bespoke kitchen designs, to comprehensive refurbishments and new constructions. We’re driven by a passion for tailor-making any space that suits your needs. Our approach is streamlined and professional, ensuring top-notch quality, timely delivery, and adherence to budgets. Our meticulous attention to detail is evident in every project we undertake. Contact us today to discuss your unique building project.
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Livinroom Developers Ltd
Rating: 5 out of 5
Extension Builder in Streatham
Our expertise lies in project management of loft conversion and kitchen extension which is carefully coordinated to ensure a seamless and integrated package service from start to finish. Our role is to be the single point of responsibility taking the burden off the client. This includes managing what are often complex building processes from inception through to completion and hand over.
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Latest review:
I recently completed the building of an orangery extension (with skylight) to my semi-detached townhouse in NW London. The extension was to be used as a new kitchen while the existing kitchen converted to a living room. I awarded the contract of building the extension to Anthony and I was pleasantly impressed with the quality of work delivered. Anthony Project Managed the entire process from beginning to end and ensured that all my expectations were surpassed. His hands-on attitude to every detail of the work was quite reassuring. I am glad to say that Anthony and his team are very good professionals and they delivered the project on time and within budget, even going over and beyond the original scope of works in order to ensure that all my latter requests were addressed appropriately.
Vilmos Huszak
Rating: 4.4 out of 5
Extension Builder in Streatham
Everol ltd has been running successfully since 2002. A team of 15 highly experienced team including; roofer, decorators, plumber, electrician, tiler, brick layers and plasterers bringing you the quality space in your home. We specialise in loft conversions, extensions and refurbishment projects. Have plenty of excellent references to privide on request.
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Latest review:
Extensions- 5 Sep 2014
We got Vilmos and he's team to convert our loft and install bi-folding doors in our kitchen as well as fix our front garden (new path and wall). I have been very happy with there work and I'm very pleased with our new loft conversion. There workmanship is very excellent. I am more than happy to recommend Pure Decor (Vilmos). Thank you Vilmos and your team for all that you have done.
GRAND DESIGNS INTERNATIONAL LTD
Rating: 5 out of 5
Extension Builder in Streatham
Grand Designs International (GD) | Architectural, Engineering & Construction Services At Grand Designs International (GD), we are dedicated to delivering high-quality architectural, engineering, and construction services tailored to meet our clients’ unique needs. Backed by over 20 years of expertise, our team specializes in transforming visions into reality—whether you're planning a new build, home extension, loft conversion, or full-scale renovation. With a strong foundation in innovation, sustainability, and precision, we provide end-to-end project solutions, from initial design and planning permissions to structural calculations and final construction. Our commitment to quality, efficiency, and client satisfaction ensures that every project is completed to the highest standards. Why Choose Grand Designs International? ✅ Full-Service Expertise – From architectural planning to construction, we handle every stage seamlessly. ✅ Planning & Building Regulations Specialists – We navigate approvals efficiently to prevent delays. ✅ Experienced & Certified Team – Qualified engineers, architects, and builders with a proven track record. ✅ Tailored Solutions – Every project is custom-designed to meet your style, space, and budget needs. ✅ Transparent Pricing & Project Management – No hidden costs, just reliable service with regular updates. ✅ Fast Turnaround & On-Time Delivery – We work efficiently without compromising quality. Our Services 🏡 Architectural & Planning Services Planning Applications & Building Regulations Approval Concept & Detailed Design Interior Design & Space Planning 3D Visualizations & Rendering Enforcement & Retrospective Planning 🏗️ Structural & Engineering Design Structural Calculations & Drawings Civil & Structural Engineering Services Quantity Estimation & Cost Planning 🔨 Construction & Building Services Home Extensions & Rear Extensions Dormer Loft Conversions & Flat Conversions New Build Homes & Full Renovations Project Management & Site Supervision Construction Planning, Procurement & Logistics Quality Control & Safety Management At Grand Designs International, we believe in delivering excellence, one project at a time. Our reputation for integrity, professionalism, and top-tier craftsmanship makes us the preferred choice for homeowners and businesses across London and beyond. 📞 Get in Touch Today! Let’s discuss your project and bring your dream home to life.
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Latest review:
★★★★★ Highly Recommended! I had an existing 3-bedroom rundown property and contacted multiple builders before meeting Director Mr. Q Nawaz. From our first meeting, I was impressed by his ideas and the fact that Grand Designs could provide all services in-house. Initially, I proceeded only with the planning application to see if what he promised was possible—and YES, he delivered! My application was approved as he assured me. Seeing this success, I entrusted them with the entire construction project, and Grand Designs completed it within just 6 months, despite the challenges of COVID-19. Not only did they build my project, but they also added significant value to the development. I’m proud to have worked with them, and their exceptional work on my St Albans development is now featured in their portfolio. Within one year, the value of my property increased by £500,000—a testament to their expertise! Extremely professional, highly skilled, and very reasonably priced. You don’t need to go anywhere else—Grand Designs is the complete package!
Handy Man - Radek help you
Rating: 4.7 out of 5
Extension Builder in Streatham
There is always something that needs doing!
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Latest review:
Restoration & Refurbishment- 17 Oct 2019
Radek is a friendly hardworking young tradesman,he turned as he agreed and completed the various jobs I originally asked him to do, my wife & I were so p[eased with his work we asked him to build an extension garden room for us.he has nearly finished that and we are very pleased not just with the quality but also the cost.we would not hesitate in using him again or recommending him to others.
Krots
Rating: 5 out of 5
Extension Builder in Streatham
Wood carpenter for doors, external rooms, ceilings, stairs, bedrooms, kitchens, railings and gardens
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Latest review:
Carpentry- 28 Sep 2025
Great handywork,
Goldenfield
No reviews yet
Extension Builder in Streatham
Loft convention, kitchen Extention, house conversion to flats.
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Su Su Construction Limited
Rating: 5 out of 5
Extension Builder in Streatham
Welcome to Susu Construction: Your Premier London Construction Partner Are you searching for a London construction company that stands out for its excellence, commitment, and innovation? Look no further than Susu Construction, your go-to choice for top-notch construction solutions in the bustling capital of London.
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Latest review:
Groundwork & Foundations- 2 Dec 2022
We are very happy and glad to have found Su Su Construction. It is great to work with such an open minded contractor who is very experienced and diligent. To us architects it is really important to be able to explore alternative means of construction in order to create long lasting, beautiful and healthy environments and with SuSu we are on the right track. Highly recommend.
Alchemy Build
Rating: 4.5 out of 5
Extension Builder in Streatham
We specialise in high end refurbishments / renovations but also undertake extension projects (loft, basement, rear, etc). We also do smaller projects of just bathrooms and kitchens. As we have all qualified tradesmen at our disposal we occasionally do more maintenance type work of repairs.
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Latest review:
Restoration & Refurbishment- 26 Jan 2019
Excellent work. Aaron and his team did a great job renovating our flat , including rewiring and laying a new wooden floor. The workmen were very good , professional, thorough ,clean and tidy. We had to live at the property during the work and they made sure they left us comfortable at the end of each day. We are very happy with the result. Aaron was very easy to communicate with and responded quickly to any queries. Ten out of ten guys! Highly recommended
L.S Building and landscaping services
Rating: 5 out of 5
Extension Builder in Streatham
L.s Building and landscaping services can offer you a stress free job as we take care In every thing we do around your property. I have studied Bricklaying at college for 2 years. I have 16 years of experience in the building game . we under take extension’s, garden wall’s, repointing wall’s, slabbing ,exterior porcelain tileing patio and all outher types of landscaping. I take Pride in my work and have attention for detail.
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Latest review:
Fencing- 29 Jan 2019
Did job on time, as specified and to value of quote.
Eloah Israel security and construction Ltd
Rating: 5 out of 5
Extension Builder in Streatham
Hi, we are a company that prides itself on providing good work to our customers, making their dreams come true! we guarantee complete satisfaction and quality in carrying out our work, respecting the delivery times determined by our customers
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Latest review:
Erick demonstrates remarkable thoroughness, reliability, and trustworthiness. His keen attention to detail is exceptional, and he leads a highly efficient team that promptly meets all demands and tasks. He successfully refurbished my entire house in Northampton, adhering to the projected timeline without any delays or setbacks. Throughout the project, he never dismissed any of my requests and fulfilled them all effortlessly. Erick is always easily accessible, promptly responding to calls and messages. I have enthusiastically recommended him to several of my friends, all of whom are immensely satisfied and grateful for his services. Furthermore, his pricing is fair and reasonable, leaving me extremely pleased with the quality of his work.

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.