Extension builders in Forest Hill

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (21 reviews)

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Some of our top rated extension builders in Forest Hill

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Valentin
Rating: 5 out of 5
Extension Builder in Forest Hill
Extension, plastering, tiling, flooring, plumbing, electric.....General contractor
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Latest review:
Bathroom Fitting- 1 Jun 2024
Valentin is a very professional and well experienced plumber and electrician. Hi did amazing job.Changed the bath and the panels in one day!
Step-Up Contractors
Rating: 5 out of 5
Extension Builder in Forest Hill
Step Up Contractors Ltd with over 20 years of construction experience. We are a family owned business and have been responsible for successfully completing a variety of construction projects covering a wide spectrum of expertee uses. Completed on time, to satisfaction, on budget. We take care of all your construction needs, from design, to handing over keys to your new home. No job too small, from a leaking tap, bathroom install to a double story extension. Free no obligation quotes!
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Latest review:
Bathroom Fitting- 14 Aug 2021
I would definitely recommend Step-Up Contractors - they have done a really fantastic and great quality job of refurbishing our bathroom and ensuite shower room. They were very professional, friendly and communicated really well with us throughout the whole process. They tidied up every evening before they left and were very considerate. They did such a good job that we have asked them to come back soon to complete kitchen flooring work for us!
Graham Stuart
New on MyBuilder
Extension Builder in Forest Hill
My name is Graham. Have been working in the building trade for over 30 years now. I work with my son, we fit kitchens, bathrooms, construct garden builds, extensions, etc. I live in Sydenham working on recommendation only, this is our first time for advertising
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JED BUILDERS LTD
Rating: 5 out of 5
Extension Builder in Forest Hill
A limited company established in 2016. More that 8 years experience in construction business. We undertake all building works, big or small, managing and looking after project so the client can have the best results possible.
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Latest review:
Kitchen Fitting- 14 Dec 2018
Very lovely and professional and clean. Very prompt/punctual and worked efficiently , will be using them again to do more work in my property. Definitely with recommend them to anyone ! 10/10 from me ! Good service delivery
D A Daly Renovations
Rating: 5 out of 5
Extension Builder in Forest Hill
Loft conversions, Extensions, full refurbishments, Bathrooms, kitchens, patios...etc.
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Latest review:
Conservatories- 10 Dec 2023
They were Quite professional.
VLL-MESHI Construction & Rendering Ltd
Rating: 5 out of 5
Extension Builder in Forest Hill
Hello from VLL company number We have been established in UK for more than 16 years. Our trades are, Loft conversion and extensions. Insulation and rendering. Bricks lips. Plastering. I have a Health and safety policy in place and I have Public and employers liability insurance.
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Latest review:
Plastering- 16 Oct 2026
Very happy with the work completed. Was professional, reliable and completed everything to a high standard. Great service from start to finish. Would definitely recommend!
Paulbulders
Rating: 4.2 out of 5
Extension Builder in Forest Hill
Our company is based on the belief that our customers needs are of the utmost importance our team is committed to meeting those needs as a result a high percentage of our business is from repeat customers and referrals I/we pride our self in and would welcome the opportunity to earn your trust and deliver you the best service in the industry
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Latest review:
Carpentry- 1 Feb 2019
Pal was punctual, tidy and was calm and efficient and polite.the job was done perfectly. I would hire him again in the future.
Turnham Builders
No reviews yet
Extension Builder in Forest Hill
Introducing Turnham Builders, your trusted partner in crafting dreams into reality. With two decades of unwavering commitment to excellence in the building trade, we have now expanded our horizons to offer a comprehensive solution for all your building needs. Operating within a 20-25 mile radius of central London, we bring a wealth of expertise to every project we undertake. From meticulous restoration to transformative refurbishments, from bespoke kitchens and bathrooms to seamless building extensions and loft conversions, we pride ourselves on delivering unparalleled craftsmanship. Our skilled team excels in carpentry, plumbing, electrical work, plastering, and beyond, ensuring a seamless, hassle-free experience from start to finish. At Turnham Builders, we don't just build structures; we build relationships based on trust, integrity, and a shared vision for excellence. Join us in bringing your vision to life.
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Ionut Olaru
No reviews yet
Extension Builder in Forest Hill
I can provide the following services: RC Framework and Formwork Substructures and Superstructures Brickwork Painting & Decorating Demolitions and Soft Strips Earthworks and Groundworks Reinforced Basements Structural Works and Underpinning
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Yida Design and Construction Ltd
Rating: 5 out of 5
Extension Builder in Forest Hill
Yida Construction is a limited company based in Central London. We are a very reliable and professional team of tradesmen with over 10 years of experience in the building industry, committed to delivering the highest levels of quality and service to our clients.
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Latest review:
Restoration & Refurbishment- 26 Jun 2022
Tommy was a wonderful perfectionist and has done beautiful work in our stairway and hallway which had needed refurbishment for a very long time. It feels brand new. The flooring is perfect both in the hall and staircase, and the walls are now perfectly smooth and painted immaculately. Friendly and accommodating, we will be hiring again for more jobs in the future, undoubtedly. Thank you.
Velvet Construction
Rating: 5 out of 5
Extension Builder in Forest Hill
About Velvet Construction: 5+ year experience in the building trade. CSCS Black Card Holder All health and safety certificates. Velvet Construction has a large team of qualified tradesmen, delivering a high standard of workmanship at a competitive price. For more information on our services please contact us. We offer free quotations and all work is insured and guaranteed.
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Latest review:
Restoration & Refurbishment- 10 May 2019
Velvet Construction are a friendly and professional contractor who work hard to deliver an excellent service. We have worked closely with them and their practical and dynamic approach is refreshing to work with in a professional capacity and we would highly recommend them. Their quality of workmanship is excellent which is largely driven by their own high standards which they monitor closely and consistently. They are organised and communication is always great. A big thank you to the whole team and Specially Negedet being a joy to work with . Highly recommend him and his hard work time. Thank you
M&I ELECTRICAL SERVICES LTD
No reviews yet
Extension Builder in Forest Hill
General Building & Electrical Engineering. Professional Builder, Electrician & Plumber – All-in-One Service! Sign & Awning Looking for a skilled and reliable tradesman for your next home project? I offer high-quality building, electrical, and plumbing services at competitive prices. Services Offered: General Building & Renovations (Extensions, Loft Conversions, Refurbishments) Plumbing & Heating (Leaks, Pipework, Bathrooms, Radiators) ⚡️ Electrical Work (Rewiring, Lighting, Sockets, Fuse Boxes) Plastering, Tiling & Painting Carpentry Kitchens, Bathrooms & Flooring Sing & Awning ✅ Fully Qualified & Experienced ✅ Reliable & Affordable
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Sebek Construction Ltd
Rating: 5 out of 5
Extension Builder in Forest Hill
Sebek construction family run business for the last 20 years. High quality refurbishment specialits. Kitchens, bathrooms, loft conversion and extension. all work comes complete with public liability insurance.
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Latest review:
We have been working with Derek Borkiewicz (Sebek Construction) on a renovation of a garden flat in Little Venice since last autumn. We needed to completely restore the whole flat, including the garden. This was our second renovation project and by this time we knew what we wanted to do, which mistakes to avoid and what to pretend from a qualified builder. We will never stop saying how lucky we have been to find Derek and his team! Derek is not only a professional builder who is very careful to the smallest of the details. He is not only a very good project manager who is constantly checking the work of his men. Derek is a friend who takes on board a project like it is his own project. He suggested the most convenient and best solutions for any problem we came across during the works. There wasn’t a time when he didn’t know what to do to solve a difficult situation (and there are lots of small and big issues coming up in a renovation work) no matter how complicate they were and how long it took to solve them. His availability and his courtesy are incredible above all in a fast running city like London. This is priceless to us. His hard work can be seen in the wonderful result we reached with this garden flat. If we ever decide to work on another project we won’t think twice about working with Derek once again. In fact, now that we found the perfect man to work with, we are looking forward to finding another renovation project to work on! Monica
Perfectloft
Rating: 5 out of 5
Extension Builder in Forest Hill
Converting your loft into a beautiful living space may seem like a daunting task, but the results are always going to be worth the painstaking process. The loft conversion procedure does not have to be that difficult; all you require is to hire right people to do the right job.
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Latest review:
Kitchen Fitting- 4 Nov 2019
Bogdan and Marius were great. They constantly kept us updated with progress and came up with good solutions to any issues they encountered, checking we were OK with them before progressing. They were on time, efficient, helpful and tidied up after themselves. I would definitely recommend them.
BRITLIT CONSTRUCTION LTD
Rating: 4.9 out of 5
Extension Builder in Forest Hill
Building construction work, all building work undertake. Experience 20 years
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Latest review:
Conversions - General- 23 Nov 2019
Saulius was excellent. Saw the job that needed doing, we thought it looked complicated and were worried about the costs. However, him and his team dealt with it quickly and made a complex job look
Jc carpentry services ltd
Rating: 5 out of 5
Extension Builder in Forest Hill
My name is John cox and I am the managing director of Jc carpentry services ltd…. We specialise in Main contracting/ Sub contracting/ Loft conversions/ Extensions/ Kitchens/ Bathroom refurbishment.
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Latest review:
Carpentry- 15 Aug 2025
I would 100% recommend John and his team. We have been really unlucky with 3 other builders taking off with our money and not completing the work. John is very professional, took on someone else’s mess and done a brilliant job. We wanted exposed oak rafter detail and the team done an excellent job. John is very good at problem solving on the spot when there are issues, he is very approachable and keeps you updated with the progress throughout the job. What he has been good at is also talking through different options with us before doing different sections of the work and he does not take short cuts. If you need excellent honest builders John is your guy! We will get the decorations done and post the end product.

4.2

Top rated Extension Builders

Our Extension Builders in Forest Hill, are rated 4.2 out of 5 based on 21 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.