Extension Builders in Forest Hill

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.8 (20 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

3252 Results

Sort by:

Pal
No reviews yet
Extension Builder in Forest Hill
For a strong Thumbtack company description, focus on being professional, clear, and personable. You want to convince potential customers that you are the best person for their specific job.
Get in touch
Cgk construction
No reviews yet
Extension Builder in Forest Hill
I am doing building work from last 15 years. I am doing all the work professionally. We will provide you best quality of work.
Get in touch
ALEX’S ELECTRICAL CREW LIMITED
No reviews yet
Extension Builder in Forest Hill
We specialize in external rendering, providing durable and weather-resistant finishes that protect and enhance properties. Our services cover traditional and modern rendering systems, delivering smooth, stylish, and long-lasting results. With a commitment to quality and reliability, we help transform exteriors into strong, attractive, and energy-efficient spaces.
Get in touch
DRYPSIAK
No reviews yet
Extension Builder in Forest Hill
Hi! My name is Viktor. My team and I are professional carpenters with over 7 years of experience in construction. We have received many great reviews from our customers. We specialize in both first and second fix carpentry, as well as any kind of woodwork. We take pride in delivering high-quality craftsmanship, always meeting deadlines and ensuring customer satisfaction. Whether it’s framing, flooring, doors, windows, or custom woodwork, we approach every project with precision and attention to detail. No job is too big or too small — we’re ready to help bring your vision to life.
Get in touch
Blue Brickwork Ltd
No reviews yet
Extension Builder in Forest Hill
Blue brickwork has over 20 years experience in construction, were hard working, professional and reliable. We will work with you every step of the way to bring your dream project to reality. No job is to big or to small and we give 100% to every job.Give us a call for a quote or if you just need some professional advice.
Get in touch
Daniel Gagea
Rating: 5 out of 5
Extension Builder in Forest Hill
We are onest builders, quick and reliable jobs, new on my builder but with lots of experience on the trade, looking for work, we do all kind of refurbish jobs, decorating, carpentry, basic plumbing and electric, new bathrooms or kitchens, back or loft extensions ,landscaping and much more We offer guarantee for our work. Everything seen on the pictures is 100% our work and we have loads of other pictures
Get in touch
Latest review:
Daniel quoted comprehensively and clearly for both jobs that I needed, building an extension and a raised patio at the end of the garden. He worked extremely hard and diligently every day. Also he would summarise what he would do next and we discussed any changes etc and which tiles or render I preferred. I am very happy with both the patio and extension and Daniel finished everything off to an excellent standard and went above and beyond the quote. I would not hesitate to use him again and recommend him highly.
KC Builders
No reviews yet
Extension Builder in Forest Hill
We do all kinds of building works like electric, plumbing , roofs , tilling, plastering, etc
Get in touch
Riya glass and glazing ltd
No reviews yet
Extension Builder in Forest Hill
Hello, my name is Renu, and I represent Riya Glass and Glazing ltd, a trusted provider of high-quality windows and doors. We specialize in delivering durable, stylish, and energy-efficient solutions that not only enhance the beauty of your home but also improve comfort and security. Our mission is simple: to provide customers with the perfect combination of design, functionality, and value. Whether you’re looking for modern upgrades, classic styles, or custom solutions, we take pride in tailoring our products to meet your unique needs. With 15 Years of experience, a commitment to excellence, and professional installation services, we ensure every project is completed with care and precision. At [Your Company], we believe your windows and doors should do more than just open and close — they should add value to your home and peace of mind to your life. We’d be honored to help you transform your home with solutions built to last
Get in touch
SaFa Ltd
No reviews yet
Extension Builder in Forest Hill
Synergy Building Services a trusted name in construction, excels in diverse renovation projects. With a foundation built on precision and quality, Synergy ensures excellence in every undertaking. Rely on this professional team for all your renovation needs.
Get in touch
Neil Thompson
No reviews yet
Extension Builder in Forest Hill
Hi there, I’m Neil, I’ve got 20+ years of experience in the construction industry. I’ve worked all over London and Greater London over the years and travelling to work is not an issue for me. I have an experienced group of people that I work with and who know how to get the job done on time and on budget. From the domestic side of the industry i.e. garden walls, extensions and new builds to the commercial side which includes retail units, office blocks and housing estates, there’s nothing that can’t be built!!! If an architect can draw it, we can build it!!! Thanks for checking out my profile and I look forward to hearing from you soon.
Get in touch
Cosmin Badulescu
No reviews yet
Extension Builder in Forest Hill
Hello, Very skilful worker with over 14 years of experience in construction. Various skills and well organized.
Get in touch
Kalinicz build and designe
No reviews yet
Extension Builder in Forest Hill
Hi my name is Arek I m professional carpenter I have done many wardrobes,kitchens,floors,doors and also lots of roof works loft conversions and many more 20 years experience and all professional tools always on time and always finish the job properly
Get in touch
Sfg constructions
No reviews yet
Extension Builder in Forest Hill
Hi, I’m a reliable and hardworking individual with experience in kitchen fittings, floorings, bathroom fitting, loft conversions, . I’m passionate about providing excellent service and always go the extra mile to ensure customer satisfaction. I’m punctual, detail-oriented, and take pride in doing the job right the first time. Whether it’s delivering with care or handling tasks efficiently, I’m here to help make your day easier.
Get in touch
CHARDI KALA CONSTRUCTION MANAGEMENT LIMITED LIMITED
No reviews yet
Extension Builder in Forest Hill
Hi, I’m Himanshu 👋 I’m a reliable and experienced professional offering high-quality construction management services across the UK. I work closely with clients to plan, organise, and oversee building projects from start to finish, making sure everything runs smoothly, on time, and within budget. I take pride in clear communication, attention to detail, and delivering results you can trust. Whether it’s managing renovations, coordinating contractors, or ensuring quality and safety standards are met, I treat every project with the same care and professionalism. Customer satisfaction is my priority, and I believe in honest work, fair pricing, and long-term relationships. I’m always happy to discuss your project and find the best solution for your needs.
Get in touch
Gill brothers limited
No reviews yet
Extension Builder in Forest Hill
Gill brothers ltd is a trusted family run business based in the heart of West London with a decade of experience. Our fully qualified team of plumbers can cater to all your plumbing needs. We pride ourselves on our high standard of workmanship, using only the best tradesmen. Every project is completed with our clients desires at the forefront. We take pride in our work delivering effective communication, reliability and integrity to achieve cost saving measures and meet deadlines.
Get in touch
JW Carpentry
Rating: 5 out of 5
Extension Builder in Forest Hill
All aspects of carpentry roofing, joisting, 1st fix, & 2nd fix work. Specialists in structural carpentry Combined 30 years experience.
Get in touch
Latest review:
Extensions- 7 Aug 2026
Great job. Very professional, responsive and easy to discuss the project with (as well as delivering the project to a very high standard). Recommended!

3.8

Top rated Extension Builders

Our Extension Builders in Forest Hill, are rated 3.8 out of 5 based on 20 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.