Extension builders in Forest Hill

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (20 reviews)

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Some of our top rated extension builders in Forest Hill

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A&z
Rating: 4.7 out of 5
Extension Builder in Forest Hill
Hi I’m Zan, I have 12 years of experience working as a groundwork engineer. I am offering good discounted prices whilst I establish my business! I offer the following services: -Digging foundations and all general groundwork -Gutter cleaning -Roof damage repair -Demolition -Pipework
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Latest review:
Groundwork & Foundations- 22 Oct 2026
Zan did an outstanding job removing soil and levelling my garden ready for a shed base. The quality of his work was excellent, and he even completed additional work for the same price as originally quoted. He was reliable, hardworking, professional and left everything looking great. I could not recommend him more highly and will definitely be using him again in the future. Fantastic service from start to finish.
A. plastering
Rating: 5 out of 5
Extension Builder in Forest Hill
Hi. My name is Fatos. I have been in construction for over 17 years. We undertake rendering, plastering and painting jobs. High standard finish in very competitive prices. We also do loft conversion,roofing, plumbing, electric, tiling, extension ect. Our prioritie is to get the job done in very high quality
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Latest review:
Plastering- 22 Oct 2024
We needed to plaster our house ASAP and Fatos completed it in a short time. The house looks amazing, he was quick, efficient and was a great communicator. I would highly recommend him.
You Nailed It Ltd
Rating: 4.9 out of 5
Extension Builder in Forest Hill
You Nailed It Ltd is a design and build company providing various construction and refurbishment services in the London area. The services offered are tailored to suit the demands of residential and commercial projects. With the You Nailed It team, you won't waste time and money contacting different suppliers, builders and interior designers. The team consists of a group of specialists in the industry, that have up to 20 years of relevant experience combined..
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Latest review:
I had the pleasure of working with Romeo and his team on my kitchen renovation, and I couldn't be happier with the results! From start to finish, his work was great. The kitchen looks fantastic, and they even finished the project ahead of schedule! Romeo and his team were very professional, always on time, and always kept me updated on the progress of the project. They also kept the flat clean and tidy every night, which made it much easier to live in the flat while the project was being done. I highly recommend them to anyone looking for a kitchen renovation!
GMG - Georgian Masters Group Limited
Rating: 5 out of 5
Extension Builder in Forest Hill
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
Top Finish Ltd
Rating: 4.6 out of 5
Extension Builder in Forest Hill
We are a property refurbishment specialists with a wealth of experience in house extensions,basements,loft conversions,bathrooms kitchens and much more. We have built a reputation on the basis of providing clients with a quality service that is combined with excellent value for money. .
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Latest review:
Extensions- 16 Dec 2014
These guys were amazing!!! They have done a fanstasic job. There standard of work was extremley high. They turn up on time every day monday to friday and they also offered to work the weekends to speed up the project if needed...... which i did. The price was very competitive and i would definitely use them again always! Get them while you can!
SEASOUTH BUILDS LIMITED
Rating: 5 out of 5
Extension Builder in Forest Hill
At Seasouth Builds, we bring over 5 years of hands-on experience in the building and construction industry. Known for our loyalty, reliability, and attention to detail, we take pride in delivering high-quality workmanship on every project
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Latest review:
Tiling- 24 Sep 2025
I hired seasouth builds because not only did he give a really reasonable quote, but he also had knowledge of tiling over retrofit underfloor heating - which other tilers seemed to be really hesitant to work with. The job was done to an excellent standard - he’s a real perfectionist. It did take a bit longer than expected, due to some floor level issues which he didn’t account for when he quoted. I was really worried about the price increasing out of my budget when we started running over time, but I was so grateful to find that he was a really honest guy who stuck to the agreed quote and didn’t try to make it my problem one little bit. He was polite and friendly throughout the whole job, turned up whenever he said he would, and kept in constant contact. Really honest (I happily left him unattended in my property). Customer service was excellent, nothing was too much trouble. 10/10 would recommend.
ResidentDevelopments
Rating: 5 out of 5
Extension Builder in Forest Hill
Conceiving and delivering aspirational residences, for the Resident.
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Latest review:
We have previously been burnt working with self proclaimed tradesmen. The organisation is professional and customer focussed. Working with them was a pleasure, I couldn’t recommend them enough.
Adamus and Contractors Limited
Rating: 5 out of 5
Extension Builder in Forest Hill
Adamus & Contractors Limited We’re a friendly, hands-on building company with 10+ years’ experience, specialising in refurbishments, loft conversions and extensions. Whether you’re opening up a space, extending your home, or bringing an older property back to life, we handle everything from start to finish. We’ve got an in-house architect and interior designer, so we can take care of the planning, design and build all under one roof — making the whole process a lot easier for you. From steels and structural work right through to the final finishes, we use a solid team of trusted trades and take pride in doing things properly. We’re used to working in people’s homes, so we keep things tidy, organised and running smoothly. We keep it simple: clear quotes, honest advice, and no surprises. If anything changes along the way, we’ll talk it through with you first. You bring the vision. We bring the standards. At the end of the day, we just focus on doing a proper job and leaving you with a space you’re genuinely happy with.
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Latest review:
Restoration & Refurbishment- 22 Jul 2026
Hired for a kitchen refit and other works including removing a wall to open kitchen out. Understood the job, and where appropriate offered helpful suggestions. Excellent communication throughout, I was always aware of the current status of the job. Work performed exceeded expectations - and I hope they will be free next time I have works that need doing.
Woodn Construction
Rating: 5 out of 5
Extension Builder in Forest Hill
Hi, I’m a carpenter and sole trader based in South West London with over nine years of experience in the trade. Over the years I’ve worked on a wide range of residential projects such as managing full site builds throughout to creating custom, made-to-measure furniture. My skills cover everything from stud walls, plaster boarding, skirting, architraves, doors and windows, to kitchens, flooring, and bespoke cabinetry. I take pride in delivering a high standard of finish and keeping things tidy and well-organised on every job. I enjoy working closely with clients to bring their ideas to life. Whether that’s fitting a new kitchen, renovating a room, or designing something completely unique. Based locally, I offer a reliable, friendly, and flexible service across SW London and the surrounding areas.
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Latest review:
Hard Flooring- 2 Mar 2026
Highly recommend Kaylum, he ripped out the old sub-floor and fitted a new sub-floor along with new Engineered wood flooring in all of the bedrooms and hallway. Quality of work and attention to detail was exceptional. His colleague then decorated all the rooms beautifully once the floor was installed - really happy with the end result.
ABETA GROUP LIMITED
Rating: 5 out of 5
Extension Builder in Forest Hill
ABETA GROUP LIMITED covers a wide range of construction services offered by our team of professionals.
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Latest review:
Kitchen Fitting- 30 Nov 2020
Aurenc was very helpful and accommodating. The work was well done. All the persons were respectful and clean.
Estate Renovation (Al Huda Corporation Ltd)
Rating: 5 out of 5
Extension Builder in Forest Hill
Estate Renovation provides substantial building maintenance and development services, which include but are not limited to: kitchen & bathroom renovation, property refurbishment, extension, conversion, paint & decoration, electrical and plumbing services. Our main purpose is to provide your home with safety, comfort and beauty. We are prepared to face any challenges and always strive to achieve continual improvement of our values and standards during projects.
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Latest review:
Bathroom Fitting- 30 May 2022
Mohammed Huda and his builder were professional and quick to attend our job –– recommend! The communication was fast and professional. Mohammed provided a detailed quote (our job had to go through insurance) that is fair and transparent. The builder who came around, Jafa, was very respectful to our things. We were able to trust him from the get-go and had a peace of mind when he was working. He works incredibly hard and is methodical in his process (e.g. painting ceiling first, then walls, so to avoid splatter unevenness). They responded to our requests quickly and fixed things we weren't 100% happy with. The team finished the job ahead of time, and gave us tips for refurbishing in the future. Very happy and highly recommend!
Agnuss Construction Ltd
Rating: 5 out of 5
Extension Builder in Forest Hill
We are a construction company that operates in the local area mostly, but we can also cover all the other areas of Greater London. Our Services include Extensions, Loft Conversions, Refurbishments, and basically all the aspects of building work. We specialise in residential and business projects.
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Latest review:
Agnuss Construction carried out and completed our house renovation, kitchen extension and loft extension successfully. Elio and his father, Mario were very communicative throughout and very reliable. The works were carried out on time and on budget. I would be happy to recommend Agnuss Construction and use them again in the future.
Lezha Building Ltd
Rating: 4.9 out of 5
Extension Builder in Forest Hill
LEZHA BUILDING LTD Hello my name is Astrit. I’m the Director of the company We have a lot of experience in different trade so my business started in Italy but from 2015 we are based in london do not hesitate to contact no matter small or large work, we will reach you wherever you are.Thanks 🙏
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Latest review:
Tiling- 10 May 2019
As per the previous reviewer I don't usually hire tradesmen when there is only limited feedback, but given the glowing report I took the risk. And it proved to be a great decision. Astrit was great - clear communication, arrived when he said he would, sought our opinions on the key decisions and gave some great advice, before ultimately doing a great job for a reasonable price. A pleasure to deal with and will hire again for any future tiling work. Thanks Astrit.
Chris
Rating: 5 out of 5
Extension Builder in Forest Hill
Hello, For the last few years I have been working in a construction company. During the pandemic, I decided to start working on my own.
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Latest review:
Handyman- 5 Mar 2026
Chris built some pax wardrobes for us, did a fantastic job from start to finish. Arrived on time, great quality of work and left the place looking spotless. I would highly recomend him
Miranda flooring
Rating: 5 out of 5
Extension Builder in Forest Hill
Reliable painting, gardening, flooring, and handyman services. Quality work, fair prices, and timely completion. Free quotes available. Ready to help with your project!
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Latest review:
Repainted my living room and 2 bedrooms. Happy with service, everything was done to a high quality finish. The guys were lovely, will definitely recommend!
Nenad Jevtic
Rating: 5 out of 5
Extension Builder in Forest Hill
I've start working in the building industry 15 years ago. Over the years working in the industry I have moved up the lader and for last 4 years worked as project manager for different building company's . I have vast experience in designing and working on projects to highest standards to meet deadlines and within the budget . I have team of highly experienced tradesman and we always go extra mile to meet customers needs.
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Latest review:
Conversions - General- 6 Feb 2019
Nanad and his team have been wonderful from day one. We have had them with us a number of weeks doing all the jobs they quoted for and more, they are fast efficient and courteous of the fact we lived in for a lot of the work. Everything has been finished to a great standard and we are thrilled with our house which has been completely transformed. We have already recommended them to friends and will continue to do so and hopefully have them back in future. They are creative, solve issues that crop up easily and without fanfare extremely hardworking and all round an excellent team! Thank you for everything! Emma and James

4.2

Top rated Extension Builders

Our Extension Builders in Forest Hill, are rated 4.2 out of 5 based on 20 reviews from customers like you.

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

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 Forest Hill 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 Forest Hill who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Forest Hill?

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

Find extension builders in Forest Hill with MyBuilder

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

Step 2: Compare different extension builders in Forest Hill

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

Step 3: Hire Forest Hill extension builders with confidence

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

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

What to ask a Forest Hill extension builder before hiring?

Before hiring an extension builder in Forest Hill or extension building company in Forest Hill, 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 Forest Hill?

An extension builder in Forest Hill 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 Forest Hill 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 Forest Hill?

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 Forest Hill 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 Forest Hill 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 Forest Hill

Can an extension builder in Forest Hill help with planning permission?

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

Many Forest Hill 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 Forest Hill help with materials and finishes?

Yes, most extension builders in Forest Hill 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.