Extension Builders in Chislehurst

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (18 reviews)

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Some of our top rated extension builders in Chislehurst

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MYCO Contractors Limited
Rating: 5 out of 5
Extension Builder in Chislehurst
I am an experienced and fully insured builder. On average I and my team build and renovate 5 extensions per year. Our current or old clients are always ready to share positive feedback about our work. We work off the ready plans which are usually prepared by the clients themselves and approved by the local authority. As of now (30/03/2023) my availability to start the new project is late April or early May. Please get in touch and I will be happy to assist.
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Latest review:
Extensions- 4 Aug 2020
On a cold November evening, Tony and his team turned up to provide a quote and within a week this was received. The quoted price came in the middle of the pile, which was a good start and aligned closely to the ballpark figure I'd received from a friend who was also in the trade. We then visited a site they were finishing off, and Tony had the confidence to ask us to speak to the client without him there and they gave us the confidence to proceed. They started in January 2020 and rapidly moved through the works and engaged closely with my architect, Structural engineer and building control and proceeded based on their recommendations strictly. We lived in the property as build progressed and the team ensured that the site was secure every evening and we were safe. As COVID-19 hit and we went into Lockdown, the team continued to come and work (we were separated from them as the house was boarded up) and the only challenge was getting supplies. Tony scoured all over London, picking up items as best as he could and work continued. Once they'd broken through into the old part of the house they continued to progress rapidly and showed utter professionalism. The team lead's attention to detail is impressive, and he gave great recommendations on what would be the right approach when we were laying out features such as window sizing and lighting. The standard of work is excellent and I would highly recommend them.
Carnot Construction Limited
Rating: 5 out of 5
Extension Builder in Chislehurst
Carnot Construction are committed to ensuring our clients are satisfied from beginning to end, we aim to take the stress out of building work and complete all projects as swiftly and cleanly as possible. We ensure our clients are in safe hands with strict contracts in place to protect both parties. We specialise in Extensions, New builds, Loft Conversions, General Conversions, Kitchen and bathroom renovation/fitting.
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Latest review:
Extensions- 15 Aug 2018
100% RECOMMENDED Michelle and her partner measured up and competitively quoted within a short space of time. She was then very patient and supportive when unforeseen planning issues popped up and set the start date back by quite some time. Once building started, all questions were promptly answered by either the site manager or Michelle, both being available at all times. I was away for the duration of most of the job and it was very reassuring to know that I was leaving it all in capable and honest hands. The workers were very proficient and tidied up after themselves at end of each day. They also put in some very long hours at times to hasten the work. I was also impressed by the handling of unexpected problems during the building (mainly invasive tree stumps!). I am absolutely thrilled with the end result. High quality workmanship and a beautiful building which I am sure will last many years. I would certainly recommend them without a doubt.
Sort Project Management Limited
No reviews yet
Extension Builder in Chislehurst
Based in London Sort Project Management Ltd is a construction company with over 10 years experience. Since we established in 2010, we have built over 100 new homes, extensions and conversions. We specialise in refurbishments, constructing new homes, loft conversions and extensions for greater living spaces. We also offer a full-service residential Design and Build service. We also offer the following services: Landscaping & Gardening Garage & Garden Room/Summer House Construction Roofing
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GS Builder
No reviews yet
Extension Builder in Chislehurst
So we do the clean and a nice job. As all the building work is undertaken by our company. We make sure that our customers should be happy with our work
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PROMAESTER LTD
Rating: 5 out of 5
Extension Builder in Chislehurst
Promaester Ltd specialises in home extensions and loft conversions. We take a straightforward, professional approach, with a strong focus on good workmanship, clear communication and keeping the project well organised from start to finish. Our aim is to carry out the work properly, keep disruption to a minimum, and deliver a finished space that fits naturally with the rest of your home.
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Latest review:
Extensions- 7 Mar 2026
Top notch from start to finish Tomas and his team were brilliant Will have them back to do dormer extension
MDG Brickwork and Building Limited
No reviews yet
Extension Builder in Chislehurst
MDG was founded by Managing Director Mathew Gillam and began trading in 2006 the company was incorporated as MDG Brickwork & Building Ltd in 2015. Mathew has over 20 years experience in the construction industry and prides himself in delivering a high standard of workmanship. MDG specialise in all aspects of brickwork and building covering the South East of England. MDG have an enviable client base and work closely with their clients offering advice on each project specification. This approach adds value and significantly contributes toward delivering high levels of customer satisfaction and consistent repeat business.
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Intelligent property developments London Ltd
No reviews yet
Extension Builder in Chislehurst
Over 20 years experience in construction, having worked solely on word of mouth for the past ten years we’ve built up a massively respectable reputation within the construction community, all work is insured and guaranteed, everything carried out to the highest standard possible, my personal skills include kitchen fitting, plastering, bricklaying, painting and decorating and much more, we also have a team of skilled tradesman
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Care and Bussiness ltd
No reviews yet
Extension Builder in Chislehurst
We specialise in managing residential renovation and conversion projects from start to finish. We work with a trusted network of qualified trades and ensure projects are delivered on time, on budget and in line with building regulations. We focus on communication, quality control and smooth coordination between client and trades.
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Fatlind
No reviews yet
Extension Builder in Chislehurst
Transform Your Home with Harris Construction 🏗️ Looking to improve your home? At Harris Construction, we deliver high-quality workmanship with reliable service you can trust. ✅ Loft Conversions ✅ Home Extensions ✅ Basement Conversions ✅ Full Refurbishments ✅ Landscaping 💪 Quality Work. Trusted Service. Built to Last. Get in touch for a free quote and let us bring your vision to life.
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Kindzerskyi
No reviews yet
Extension Builder in Chislehurst
I love working, and I try to do my best in everything I do.
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FSB Company (UK) LTD
Rating: 5 out of 5
Extension Builder in Chislehurst
FSB is a well-organized contracting company with a team experienced in large-scale development projects with leading UK construction companies. Based primarily in London, we offer a variety of self delivered services, including complete extensions, and conversions, small works, structural alterations, steel work installations, ground work (foundations, drainage, concrete sub and superstructures), hard landscaping and paving and soft landscaping. We manage our sites carefully and have a digital site management tool kit. Our fully managed service connects skilled tradespeople with experienced construction management directly ensuring attention to detail that begins with our Contractors Proposals and continues through to practical completion and aftercare.
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Latest review:
Extensions- 17 Nov 2025
Freddie, Kaz and Dan are a great team. I felt they were friendly and professional throughout. Any slight niggles were discussed and solutions found, quickly and professionally. They were respectful and went out of their way to get on with all the neighbours. Over all I would say they are a team of very nice people, who care about what they do and take pride in achieving the result their clients are after.
Rossabuild
No reviews yet
Extension Builder in Chislehurst
Well done
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Home Renovations Ltd
Rating: 5 out of 5
Extension Builder in Chislehurst
We're a building company specializing in house extensions, loft conversions and refurbishments. Our clients come from New Malden, where we're based, but also surrounding areas. The vast industry experience enables us to provide valuable advice, professional services and individual approach, benefiting our customers. As we understand trust and credibility are crucial when undertaking such projects, we arrange viewings and provide customers with references and photos of our most recent projects.
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Latest review:
Extensions- 24 Jun 2017
We had a large piece of work done by Johan and his team. It was a 4m single storey rear extension with new kitchen installation, converting the old kitchen into a downstairs bathroom and utility room, plus other bits and bobs like new boiler, rear patio. We got quotes from a few builders, Home Renovations weren't the cheapest, they were actually towards the higher end. But we went and saw their previous work and spoke to some of their other clients. The work was done to a high quality and the clients seemed to be happy so we decided to go with them. Johan's team are very hard working, professional and polite. Pawel and his team of builders, bricklayers, plumbers, electricians, etc. would turn up before 8am and finish at 6pm working solidly throughout the day. There is Magda as the project manager who keeps you in the loop, and answers any of your questions (which we had many). There is Michaela on the finance side who keeps you up to date with the budget. Our budget went over by 5% with "variations" (extra work or materials) but it was always communicated why and the work wasn't done without our approval. Pawel would give his recommendations but the final word would always be ours. But these things can add up. Overall we were very happy with the build, it was done to a very high standard. They also finished it before time. They said it would take 12 weeks in fact they finished it in 10 weeks which was amazing as you would normally expect these things to go over.
Mss Decoration
No reviews yet
Extension Builder in Chislehurst
I am a reliable and skilled tradesman who takes pride in working cleanly, neatly, and to a high standard. From small repairs to larger renovation projects, I approach every job with the same care and attention to detail. My aim is not just to complete the work, but to ensure customers feel confident and satisfied with the result. With many years of hands-on experience, I provide practical, on-site advice that helps clients save time, space, and money. Before starting any job, I clearly explain the work involved and offer honest, transparent pricing. I offer a wide range of services including flooring installation, furniture assembly, door and window fitting, painting and decorating, basic plumbing and electrical work, as well as general home maintenance and repairs. I always work respectfully in my clients’ homes and leave the space clean and tidy. Customer satisfaction is my top priority, and I treat every property as if it were my own.
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RM constraction
No reviews yet
Extension Builder in Chislehurst
I am a building contractor with many years of experience. I can build your house extension, a garage, conservatory, a loft and any wall. I also work with renovations, so if you would like to finish the extension inside out or simple changing the look of your bathroom or kitchen look no further.
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K R E Roofing and Building
Rating: 5 out of 5
Extension Builder in Chislehurst
I run a well established business, with over 20 years building experience. I work with a team of qualified professional tradesmen, to deliver your building needs. Prices are very competitive and quotations are free of charge. I have Public liability insurance. I am new to MyBuilder hence awaiting to be selected for jobs, and the 0 feedback rating, I have reference available if required.
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Latest review:
Good prompt service and most importantly a job well done

3.9

Top rated Extension Builders

Our Extension Builders in Chislehurst, are rated 3.9 out of 5 based on 18 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Chislehurst?

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

Find extension builders in Chislehurst with MyBuilder

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

Step 2: Compare different extension builders in Chislehurst

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

Step 3: Hire Chislehurst extension builders with confidence

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

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

What to ask a Chislehurst extension builder before hiring?

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

An extension builder in Chislehurst 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 Chislehurst 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 Chislehurst?

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 Chislehurst 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 Chislehurst 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 Chislehurst

Can an extension builder in Chislehurst help with planning permission?

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

Many Chislehurst 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 Chislehurst help with materials and finishes?

Yes, most extension builders in Chislehurst 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.