Extension Builders in Mortlake

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (17 reviews)

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Some of our top rated extension builders in Mortlake

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Lcd
Rating: 1 out of 5
Extension Builder in Mortlake
Hy I am cris more 15 years experience in carpentry and building work
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Latest review:
Joinery & Cabinet Making- 8 Jan 2024
Absolute cow boy 🤬 Don’t even think of hiring So many faults Door not closing Plinth boards cut wrong So much more disgrace
A. Zen Builders
No reviews yet
Extension Builder in Mortlake
I have been working as a builder for 25 years. We have a team of 8 who can undertake a wide range of jobs - big and small.
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Majestic Builders LTD
Rating: 5 out of 5
Extension Builder in Mortlake
Majestic Builders LTD, we’re a friendly, reliable construction company providing all types of general building work for homes and properties. From small repairs and renovations to full home extensions and new builds, we take pride in doing the job right — safely, neatly, and to a high standard. Our team covers all aspects of residential construction, including brickwork, plastering, roofing, tiling, carpentry, and more. We believe in honest communication, fair pricing, and quality workmanship that lasts. Whether you’re improving your home or starting something new, Majestic Builders LTD is here to help make your project simple, stress-free, and built with care.
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Latest review:
Tiling- 2 Jul 2026
Punctual, professional and clean. Michael’s team did a very good job. Would highly recommend
Real1 Ltd
No reviews yet
Extension Builder in Mortlake
"I am a dedicated builder with extensive experience in construction and project management. I specialize in delivering high-quality projects, from concept to completion, ensuring durability, efficiency, and client satisfaction. My expertise spans residential, commercial, and custom builds, always focused on precision and innovation."
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Capital Construction Projects Ltd
No reviews yet
Extension Builder in Mortlake
Loft Conversion Extensions Refurbishment New Build All aspects of building work
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Dudzic Constructions
No reviews yet
Extension Builder in Mortlake
Builders Company with 15yrs experience. Refurbishment and Construction .Maind thing Extantions Lofts and basements. We are very experienced team.Urs strength is Pestering on very high standard.
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evergrand
No reviews yet
Extension Builder in Mortlake
We are a reliable and hardworking building team specialising in all aspects of residential construction and renovation. Our services include home extensions, loft conversions, full property refurbishments, interior renovations, roofing works, carpentry, plastering, flooring, painting & decorating, kitchen and bathroom installations, and general building work. We take pride in delivering high quality workmanship, honest communication, and completing every project to a professional standard. Whether it’s a small renovation or a full house transformation, we are committed to providing efficient, clean and reliable service from start to finish. Customer satisfaction is always our priority.
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KBZ Developments Ltd
New on MyBuilder
Extension Builder in Mortlake
We are residential construction specialists and developers that focus on residential construction.
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Build Lofts
No reviews yet
Extension Builder in Mortlake
WELCOME to BUILD LOFTS LTD !!! We provide a hi standard services for building jobs, including Loft conversions, New Build , Home extensions, Roofing,Garages, Landscaping ,Rendering .All i teriors like bathrooms and kitchens , all interiors-exteriors to a very competitive price & quality.
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jet construction London Ltd
No reviews yet
Extension Builder in Mortlake
we do loft conversion and extension brick work landscape electric plumbing we have 10 years of experience
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B ALI DOGJANI CONSTRUCTION LTD
No reviews yet
Extension Builder in Mortlake
I am a reliable and detail-oriented tradesperson with experience in wall and floor tiling, splashbacks, bathrooms, and kitchen projects. I take pride in delivering high-quality workmanship, ensuring every job is finished neatly, on time, and to the customer’s satisfaction. I offer honest advice, clear communication, and a tidy work environment from start to finish. Whether you need a full bathroom refurbishment, kitchen splashback, or outdoor tiling, I bring the right tools, skills, and professional attitude to every project. My goal is to provide a stress-free service and results you’ll be proud of.
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Costello’s construction
No reviews yet
Extension Builder in Mortlake
Hello it’s Owen from Costello’s construction here, we as a company bring great service from the moment we start to the moment we finish. We cover all aspects of building from big projects to small projects supply top quality work which is always to a customers satisfaction as we like to keep our very good reputation up to standards also keeping our customers happy. The main thing for us as a business is that we always like to work with the customer closely to make sure they get the best job for the best price we can. Thanks Owen from costello’s construction
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Adrian
No reviews yet
Extension Builder in Mortlake
Bricklayer with 8 years’ experience, covering all aspects of brickwork including new builds, extensions, garden walls, and repairs. Reliable, hardworking, and committed to high-quality, tidy workmanship. Always aim to finish jobs on time with customer satisfaction as a priority.
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Shalva Simonishvili
No reviews yet
Extension Builder in Mortlake
I have over 10 years of experience in the construction industry, having completed a wide range of projects, from residential homes to commercial buildings. I am based in the Canada Water area and am available to work across London and surrounding areas. I specialise in bricklaying, blockwork, and delivering high-quality finishes. I take pride in my attention to detail, reliability, and honest communication. I am committed to delivering high-quality workmanship, completing every job on time, and ensuring my customers are satisfied with the final result.
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Daniel J Sullivan Contractors
Rating: 5 out of 5
Extension Builder in Mortlake
Daniel is a bricklayer with over 18 years experience with in the building industry. Daniel offers you the public his knowledge and skills and guarantees a quality experienced brick work service for you the public.
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Latest review:
A very large single storey extension. The brickwork is that perfect it looks like part of the original house
Petre Marius
Rating: 5 out of 5
Extension Builder in Mortlake
My name is Petre and together with my friends will form a team of four adept workers.My team is very reliable and respectful of client's property. We work hard to make sure that all the work carried out is to the highest standards
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Latest review:
Plastering- 4 Apr 2019
Petre and his colleague arrived promptly and worked very fast and efficiently. They fitted a new plasterboard ceiling and plastered the whole kitchen in one day. They were polite and tidy. Their work is to a very high standard and I will definitely be using them again.

4.1

Top rated Extension Builders

Our Extension Builders in Mortlake, are rated 4.1 out of 5 based on 17 reviews from customers like you.

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

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 Mortlake 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 Mortlake who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Mortlake?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in Mortlake 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 Mortlake extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Mortlake home extension project is likely to cost.

Find extension builders in Mortlake with MyBuilder

Hiring the right extension builder in Mortlake 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 Mortlake extension builders. Once your job is live, we’ll share it with home extension builders in Mortlake who can express their interest.

Step 2: Compare different extension builders in Mortlake

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

Step 3: Hire Mortlake extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Mortlake, 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.

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

What to ask a Mortlake extension builder before hiring?

Before hiring an extension builder in Mortlake or extension building company in Mortlake, 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 Mortlake?

An extension builder in Mortlake 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 Mortlake 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 Mortlake?

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 Mortlake 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 Mortlake 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 Mortlake

Can an extension builder in Mortlake help with planning permission?

Yes, many extension builders in Mortlake 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 Mortlake handle everything from design to construction?

Many Mortlake 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 Mortlake help with materials and finishes?

Yes, most extension builders in Mortlake 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.