Extension builders in Forest Hill

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

Easily find verified Forest Hill Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in Forest Hill.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated extension builders in Forest Hill

3344 Results

Sort by:

Ml contractors
Rating: 1 out of 5
Extension Builder in Forest Hill
Im builder at over 30years I bathrum kithen plumbing electrical extension carpentry hityng brick work flooring decoration
Get in touch
Latest review:
Tiling- 15 May 2024
Hired this builder to complete my work and after confirming with him the date to meet to purchase materials for the w9rk he fell of the face of the earth. No communication to this day. Very unprofessional. Hire at your own risk
SZG BUILDING LTD
Rating: 5 out of 5
Extension Builder in Forest Hill
18years of experience in the construction sector. I may only offer you quality services and nothing less, with SZG BUILDING LTD you will not have to worry about anything. I specialise in every stage of the construction process, right from the very beginning till the very end, in other words from FOUNDATION to DECORATION in the blink of an eye. I will be very pleased to show my previous work, it may be the final outcome or different stages of various projects. References may be provided.
Get in touch
Latest review:
Kitchen Fitting- 20 Jun 2019
Really pleased with Slawek and his team and would defiantly recommend them after seeing a professional kitchen fit job which they did for me. They went extra mile to resolve some design issues during the fit, kept the work area clean and tidy and behaved in friendly, polite manner. Nice, reliable team charging very reasonable prices.
Sam's Building Maintenance and Constructions Ltd
Rating: 5 out of 5
Extension Builder in Forest Hill
Sam's Building Maintenance and Construction Ltd has more than 25 years experience in First and Second Fix carpentry, Kitchen installation, extension, loft conversion and general refurbishment work. We deliver quality services to meet customers' specifications and within stipulated deadlines .
Get in touch
Latest review:
Sam did 5 and half meter kitchen, with large shower and laundry rooms extension for me. He is of very good character, worked professionally, reliable and his work was good.
DL CONSTRUCTION LONDON ltd
Rating: 5 out of 5
Extension Builder in Forest Hill
Dl construction London is a small family business based in London, that prides itself on quality work for the right price. We offer bathroom and kitchen renovations, extensions and loft conventions , home alternations and refurbishment, plumbing and heating and small building jobs . Our clients needs are our top priority. - certified installer - Dbs checks up to date - asbestos certified
Get in touch
Latest review:
Bathroom Fitting- 2 May 2024
I have employed DL Construction to install a new kitchen and bathroom. They are still working in my house but so far their attitude towards their task and helpfulness have been exceptional. I can not comment about the final product yet but I am sure everything would be finished to a high standard. Nothing seems to be a problem for Javi. He always says 'yes please' and I think that is his middle name. I couldn't have asked for better. Well done (so far) Javi and everyone in DL Construction.
BLUELIME CONVERSIONS LTD
Rating: 4.7 out of 5
Extension Builder in Forest Hill
Bluelime is an established planning, design and construction company providing professional property services across London and the surrounding areas. Established in 2007, we have nearly two decades of experience helping homeowners successfully extend, renovate and transform their properties. Our services include architectural design, planning applications, interior design, structural engineering, building regulations, project management and construction. Whether you require assistance with one individual stage or a complete design-and-build service, we provide honest advice, creative solutions and a clear, professionally managed approach from the initial consultation through to completion. We have a strong track record of planning approvals and successfully completed projects. We have also been active on MyBuilder since 2012 and hold a 4.7 out of 5 customer rating, reflecting our long-standing commitment to quality, reliability and customer service. We offer a free initial consultation to discuss your property, understand your requirements and advise on the best way to move your project forward.
Get in touch
Latest review:
Extensions- 8 Oct 2018
Alton and his team at Bluelime have been incredibly helpful and enthusiastic throughout our design and planning process. From the start, Alton took his time to understand our needs and propose several cost-effective ways to improve my home and create more space for my growing family. The design process was completed efficiently and submitted for planning permission, which was granted without a problem. Since then, his team have continued to be helpful and communicative despite my need to delay to the building works due to unfortunate complications with my freeholder.
Manifest Design and Build limited
No reviews yet
Extension Builder in Forest Hill
Manifest Group is a full-service Design and Build Construction Company based in London. From initial design to the final product, our results speak for themselves. With operations running from manufacturer's and a team of professionals who prioritize top quality service, we’re sure you’ll be satisfied with the excellent results we’ll deliver. Excellence is not an act, but its a habit. It is the result of high intention, sincere effort, intelligent direction and skillful execution. It is one thing to see a Vision and it is another to seized by a Vision. Passion is priceless. If you're in need of some home improvement projects for your home or commercial space, consider working with Manifest Group. For each of our services we have experienced professionals that will handle your project with detail and care. Our Partner Architect, Engineer, Scaffolder, UPVC Manufacturer, Importers for Internal finish item are available to help. Building Maintenance Building Projects Project Management Refurbishment's Electrical Installations Plumbing Architectural Drawings Engineers Calculations Design and Build Scaffolding UPVC & Aluminium Window/Door Supply & Fitter Porcelain Tiles Supplier & Installer Bathrooms Supplier & Installer
Get in touch
ABS 23 Ltd
No reviews yet
Extension Builder in Forest Hill
we are working in the industry for the last 15 years we provide every type of building works
Get in touch
Maxcontractorsint.LTD
Rating: 5 out of 5
Extension Builder in Forest Hill
At MaxContractors , we pride ourselves in providing our customers with quality construction services that are tailored to their needs. Our team is highly experienced in the industry and have a great deal of knowledge when it comes to building and renovation. We pay attention to detail and are always willing to go the extra mile to ensure that the job is done to the highest standard. Over the past many years our company has thrived within the domestic as well as commercial building industry. With vast amounts of staff specialising in all areas of the trade, our tradesmen/women boast skill and determination many could only wish of. Having completed thousands of projects, putting smiles on countless of faces we aim to deliver the highest of standards in all aspects of the works and services. Providing quality and great time management throughout each step of this journey. We stand strong beside our clients providing a helping hand so ideas become reality, all while with a peace of mind you kick back and watch your future grow. maxcontractorsint. com
Get in touch
Latest review:
We recently completed a first and second floor renovation alongside an 5x6m extension of our 1930s property with Maxcontractorsint.ltd , and we couldn’t be happier with the results. From start to finish, they have been absolutely fantastic. The attention to detail and the quality of workmanship throughout the project has been exceptional. Matt and his team are incredible, they worked efficiently, kept work on track, and made sure we were updated and involved at every stage. Their skills, ideas, and collaborative approach truly brought the whole project together. Communication throughout the project was good, and the team provided great pre and post project support. Matt was very detail-oriented, offered inspiration during site visits, and was supportive of our requests along the way. We’re so happy with the end result and would absolutely recommend Maxcontractorsint.ltd for any project.
Dan Stevenson
Rating: 5 out of 5
Extension Builder in Forest Hill
I have been running my own business for 9 years and I specialise in construction carpentry and building. Over the last 4 years I have mainly focused on extensions and refurbishment work, but have also worked for contractors that undertake small maintenance jobs through to large new build projects. I undertake any size of job, such as 1st and 2nd fix carpentry and kitchen fitting, through to refurbishments and extensions.
Get in touch
Latest review:
Carpentry- 2 Dec 2018
Great experience with Dan. Completed the work to a really high standard.
MM Projects Ltd.
No reviews yet
Extension Builder in Forest Hill
Lofts, conversions or renovations. Whichever service you choose from MM Projects, please be assured that we are fully trained to respect the environment we work within. All Commercial and Domestic Work is undertaken – No job is too big or small. We offer Free Quotes and advice to all our customers. We offer Call Outs to all our customers. Emergency work is undertaken, making sure help is at hand just when you need it. All work is fully guaranteed.
Get in touch
REA Construction LTD
Rating: 5 out of 5
Extension Builder in Forest Hill
The company’s success is built on the strong belief of quality work, attention to detail and on-time completion. Rea Construction Ltd has an in house team of builders, architects, and interior designers with all the relevant skills and qualifications which enable us to offer a fully comprehensive design and build service. Get in touch today for a free on site consultation.
Get in touch
Latest review:
Extensions- 8 Dec 2017
We couldn’t be happier with the professionalism and quality of workmanship from REA Construction. The project was delivered within budget and on time. We lived in the property during the work and we, our neighbours and the site were always treated with the utmost consideration. There were almost no hitches and, when they did occur, they were dealt with immediately and thoroughly. Our project team, led by Kristjan and Besi, were universally hardworking, organised and produced work to an excellent standard. Communication is great, the people are wonderful. Renato was someone I felt I could trust from the moment I met him and he never let us down. He and everyone at REA genuinely care about what they do and that their customers have a happy experience. We certainly did and would have no hesitation recommending them to others.
UR BUILDERS
Rating: 4.9 out of 5
Extension Builder in Forest Hill
Hi ,we are doing every type of construction and building work including electric and plumbing. We undertake all kinds of refurbishments and new extensions ,you can see our finished and running jobs anytime. We have alot references .Our aim is customer satisfaction as we always trying to provide a good service in unbeatable price.
Get in touch
Latest review:
Extensions- 15 Oct 2026
Sal and his team were incredible. Very professional and we had two or three guys working everyday for our first building project. They came early in the morning and very attentive to any asks.Sal himself made himself available for any questions and the work was done at a very high standard. In addition after each day the team always cleaned and tidied the area.
Bright Build
No reviews yet
Extension Builder in Forest Hill
Best
Get in touch
Louis Mitchell
Rating: 5 out of 5
Extension Builder in Forest Hill
specialising in high-quality brickwork.
Get in touch
Latest review:
Bricklaying- 24 Jul 2025
I recently hired Louis to build a new fence outside my home, and I couldn’t be more delighted with the results. From the moment he arrived, he was the epitome of professionalism—punctual, polite, and incredibly courteous. The quality of the brickwork is outstanding. Each brick is perfectly placed, the lines are crisp, and the finish is flawless. It’s clear Louis takes great pride in his craft, and his attention to detail is second to none. The fence has genuinely transformed the exterior of my house and added a real touch of elegance. Beyond the technical skills, Louis was a pleasure to have around—well mannered, respectful, and always happy to answer questions. He kept the area tidy, worked diligently, and made sure I was satisfied every step of the way. Highly recommended for anyone looking for top-notch bricklaying with a friendly face and a professional attitude. I’ll definitely be calling on Louis again for future projects!
Singh Brothers Construction & Developments Ltd
No reviews yet
Extension Builder in Forest Hill
Singh Brothers Construction & Developments Ltd is a family-run construction company delivering high-quality building, refurbishment, and development services across the UK. We specialise in residential and commercial projects, offering reliable workmanship, transparent communication, and a commitment to excellence from concept to completion. Our Services - Residential Construction - Commercial Construction - Property Developments - Refurbishments & Renovations - Shopfitting & Fit-Outs - Extensions & Structural Work Our Values - Integrity: Honest communication and transparent pricing - Quality: High-standard workmanship - Safety: Zero-compromise safety culture - Reliability: On time, every time - Family: Built on trust and long-term relationships Why Choose Us - Experienced, hands-on leadership - Family-run with strong values - End-to-end project management - High-quality finishes and attention to detail - Trusted by homeowners and businesses across the UK
Get in touch
Asiya properties Ltd
No reviews yet
Extension Builder in Forest Hill
We are experienced in new build extensions basement loft, foundation ground work & renovation
Get in touch

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.

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 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.