Extension Builders in Grays Inn

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4 (16 reviews)

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Some of our top rated extension builders in Grays Inn

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Seymour Building Services Limited
Rating: 5 out of 5
Extension Builder in Grays Inn
Seymour Building Services would look after your complete project. We would organise all our tradesmen so the right trades are there at the right time. This leaves you with no headaches. Just one number to call for our friendly help and advice.
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Latest review:
Kenny and team did a brilliant job replacing my old lean-to porch area for a new smart extension with windows, door and even a cat flap. They were on time, organised, efficient and took away all the old materials and rubbish. Kenny was helpful when he visited and prompt in replying to all communications and supplying quotes and invoices. I am very happy with their work and wouldn't hesitate to recommend their services.
R Hamandi Limited
Rating: 5 out of 5
Extension Builder in Grays Inn
R.Hamandi Limited was established in January 2010 and firm in London, providing construction management, general contracting and consultant services. RHL specialises in construction and restoration of private and commercial sector in the heart of London including Residential refurbishment,Commercial,New build,Design and build, Basement construction, Kitchens specialists, Listed buildings, Sustainable buildings
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Latest review:
My colleague referred me to Raed who previously have had used R.Hamandi Ltd for construction work and they were very happy with the quality of service. Along with some other building company's last year I also contacted Raed for an estimate. Raed gave us a reasonable price with all the details of proposed work. He also explained about the possible options of how we could get the best value for our money. His professional and friendly advice helped us a lot to understand what exactly we needed and what was best for us to go ahead for our project. We decided to go ahead with R.Hamandi ltd. Raed gave us breakdown of the project and everything was documented. His support in communicating with council and planning related issues was valuable. All the planning permission requirements were followed. Presence of experienced and trust worthy staff including laborers, handymen, carpenters and painters really made it easy for me and family to be around and comfortable while they were working or to leave the house whenever we had to. Raed himself used to visit the site everyday to oversee the progress and used to discuss and take care of any possible issues. Raed's team used to turn up on time and the project was finished on time too. Even after the completion of the project staff at R.Hamandi ltd and Raed himself contacted us few times to find out if we're happy with the work carried out or if we needed any further assistance. Now we have a fully refurbed house with double side extension and loft conversion. Overall amazing service, professional, reliable and trustworthy. I recommend R.Hamandi ltd to everyone for an A+ service. Thanks,
ASAP RENOVATION LIMITED
No reviews yet
Extension Builder in Grays Inn
We are ASAP Renovation Ltd. Our team has over 10 years of building experience in and around the capital, putting you and your project in the safest of hands. Our building expertise is backed up by our very own network of trusted suppliers, giving us the ability to deliver to a high standard on any task you require. From the construction of an extension or bathroom or even complete house renovations in London, there's no better choice to see your home dreams brought to life.
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96 Degrees Carpentry Ltd
Rating: 5 out of 5
Extension Builder in Grays Inn
We undertake all aspects of Carpentry and General building works. Specialising in refurbishments and loft conversions we have a team of qualified and experienced carpenters, plumbers and electricians available for both residential and commercial works.
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Latest review:
Decking- 23 May 2021
Excellent and professional job completed as quoted. Would highly recommend to future Clients.
Carnot Construction Limited
Rating: 5 out of 5
Extension Builder in Grays Inn
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.
mink construction ltd
Rating: 3.5 out of 5
Extension Builder in Grays Inn
We offer a range of services that will suit most of your essential building and construction needs We work together as a team a highly qualified and professional construction outfit We can help you with design of all projects from small bathroom to new build house We offer: Loft conversion House extensions Flat roof Pitch roof New builds Home renovation Heating and plumbing Brickwork Electrical work Plastering Kitchen and bathroom
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Latest review:
Kitchen Fitting- 8 Sep 2021
Great guys, very happy with the job!
BOTNARI CONSTRUCTION
Rating: 4.7 out of 5
Extension Builder in Grays Inn
We at BOTNARI CONSTRUCTION provide a service of maximum quality and client satisfaction . Having over 25 years experience in the field we have completed jobs big and small to the best standard .
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Latest review:
Garden Maintenance- 19 May 2026
Fantastic service . Very good job
Da Hora Construction LTD
No reviews yet
Extension Builder in Grays Inn
London-based specialists in residential renovations and extensions, delivering tailored, well-executed construction with attention to detail.
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Hattat UK Ltd.
No reviews yet
Extension Builder in Grays Inn
Hattat Construction serves both for the landlords and the investors who are willing to remodel the properties by extensions and loft conversions including the interior design. Besides our core construction services, project management and architectural support can be professionally provided by our experts. Our customers' expectations will be realised within a harmony of optimum budget and maximum quality.
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MSKBUILDERS
Rating: 5 out of 5
Extension Builder in Grays Inn
Bathroom Specialists Builders Building Contractors Conservation Specialists Custom Build/Self Build Extensions Garage Conversions Loft Conversions Refurbishments Work for Disabled
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Latest review:
Kitchen Fitting- 4 Feb 2020
Msk builders did a good job with my kitchen very professional and reasonably priced, I would recommend them.
Hennow Construction
Rating: 5 out of 5
Extension Builder in Grays Inn
Hi, we are a small father son business with over 30 years of building experience. As both father and son are bricklayers we tend to take on jobs such as: extensions brick and block work; out buildings; garage conversions; garden walls; patios and drive ways. Formerly Owens Construction, we have now merged with close family friends to expand the brand and become Hennow Construction.
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Latest review:
Bricklaying- 24 Apr 2019
Jake and Harry did an amazing job with our front wall and fence in the rear garden. We got three quotes for the job and they were the cheapest but also came across professionally. It wasn't a straight forward job, it was was using reclaimed materials that were varying size and shapes. I was also quite particular on the look, I wanted the brickwork to match our house, they took care to match the pointing and bricks but offered advice on how we could save money whist still getting the look we wanted. They arrived everyday on time, they were reliable, honest and extremely hardworking. They also kept us in the loop throughout the work making sure we were going to be happy with the end result. I have already recommended them to friends and will use them again for our next project. Thumbs up from us!
kensington Construction & Renovation Ltd
No reviews yet
Extension Builder in Grays Inn
Welcome to Kensington Construction & Renovation Ltd, where we bring new life to old spaces and craft new ones with precision and care. Our expertise goes beyond refurbishments and restorations. We are adept at bespoke furniture design,build and installs, demolition, decorating and all other building trades. When it comes to interior renovations, we leave no stone unturned. From luxury bathrooms to kitchens, our team can transform your property and we approach each project with the care and dedication it deserves. Bespoke carpentry is where our passion meets precision. Our master craftsmen create custom pieces that elevate interiors, from stunning cabinetry to intricate bespoke items. Every detail is meticulously crafted to reflect the unique personality and style of our clients and their ideas. In addition to residential services, we offer comprehensive commercial fit-out solutions. Whether it's creating inspiring workspaces or welcoming retail environments, we tailor our services to meet the specific needs and objectives of each client, delivering results that exceed expectations. At KCR, we pride ourselves on our commitment to quality, craftsmanship, and client satisfaction. From concept to completion, we are dedicated to delivering excellence in every project we undertake. Let us turn your vision into reality and transform your space into something extraordinary. www.kcr.ltd
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Kasa
Rating: 5 out of 5
Extension Builder in Grays Inn
Kasa Building services , it’s proud to offer a wide range of services from new build to loft&extensions , refurbishments , plumbing and electric,carpentry and loads more … With as quality matters
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Latest review:
Plumbing- 3 Apr 2023
Kasa was absolutely fantastic, nothing was too much hassle as we had to make changes during the job. We have now found a plumber, we can use on all future projects. Big thank you Kasa from myself and Aiste.
Adam Renovations Ltd
Rating: 5 out of 5
Extension Builder in Grays Inn
Adam Group Ltd is an established residential construction and development company, incorporated in 2010, specialising in high-quality refurbishments, extensions, loft conversions and new build projects across London and the South East. We work with homeowners, investors and local authorities on projects ranging from £150,000 to £3 million, covering everything from full house refurbishments and structural reconfigurations to large-scale extensions, loft conversions and ground-up developments. Since inception, we have successfully delivered over 250 projects, building a strong track record for reliability, quality and consistent delivery. In 2025 alone, the company achieved a turnover of £4.5 million, reflecting both our capacity and the level of projects we undertake. Our team provides an end-to-end service, including planning coordination, structural works and full construction delivery. We are experienced in working alongside architects, engineers and local authorities to ensure projects run smoothly and comply with all regulatory requirements. We maintain a 4.9-star rating on Google, with the majority of our work coming from repeat clients and referrals — a testament to our professional approach, clear communication and attention to detail. If you are planning a refurbishment, extension or new build and want a contractor with a proven track record and the capability to deliver complex residential projects, we would be happy to discuss your requirements.
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Latest review:
Loft Conversion- 5 May 2017
Artjom and his team have done a wonerful job on our loft conversion and house renovation. We are very pleased at the transformation. Although not the cheapest quote we obtained, they were highly professional, kept the noise down and cleaned up after themselves. We also added several other jobs to our initial quote and they undertook these as requested. It is important to keep a record of everything you ask to be done. They worked very fast and were able to complete everything within 2 months - it helped that our house was empty at the time, so they didn't have to deal with us living there at the same time as the works were being carried out. Overall, I would highly recommend Adam Renovations for any building works you need done to your property.
Al Costa Construction LTD
Rating: 5 out of 5
Extension Builder in Grays Inn
WHO ARE WE? With over 25 YEARS OF EXPERIENCE with AL Costa Construction, you will find the best services provided by professionals that understand and have the knowledge of the process of construction and renovation that best suits your project. It does not matter how big is your project, we work with excellence and dedication to reach perfect results. We try to merge trends with innovating materials and processes in each project, in order to achieve high standards results in every project. OUR TEAM Our team is formed by professionals that are able to perform your project with quality, so your dream project can get out of paper and become a dream come true. Our professionals are always concern with the client’s wishes and try to combine it with them expertise, in order to achieve a final result above expectations, functional and with premium quality. OUR GOAL We try to come up with the best solutions in construction and renovation to provide ours clients an excellent experience. Our main goal is to offer services that match ours clients needs, with an excellent quality.
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Latest review:
Hard Flooring- 11 Dec 2018
Did my 3 bedroom house wooden flooring for full house. Had a wonderful experience with Alex, great job and completed on time with good standards. He gave some good suggestions which improved the quality and neatness of work. highly recommending will work with him again.
TEMFOR DESIGN AND CONSULTANCY LTD
No reviews yet
Extension Builder in Grays Inn
We offer all relevant services under one roof for your extension, loft conversion and refurbishment projects. We work across the London area and offer competitive, affordable prices. We provide free design advice, full planning drawings, submitting the plans, and preparing any changes requested by the council. We also specialize in Extensions, Loft Conversions, Structural Alterations, and Full Refurbishments. Fully insured and all our work is guaranteed .
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Top rated Extension Builders

Our Extension Builders in Grays Inn, are rated 4 out of 5 based on 16 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 Grays Inn?

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 Grays Inn 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 Grays Inn who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Grays Inn?

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

Find extension builders in Grays Inn with MyBuilder

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

Step 2: Compare different extension builders in Grays Inn

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

Step 3: Hire Grays Inn extension builders with confidence

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

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

What to ask a Grays Inn extension builder before hiring?

Before hiring an extension builder in Grays Inn or extension building company in Grays Inn, 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 Grays Inn?

An extension builder in Grays Inn 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 Grays Inn 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 Grays Inn?

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 Grays Inn 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 Grays Inn 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 Grays Inn

Can an extension builder in Grays Inn help with planning permission?

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

Many Grays Inn 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 Grays Inn help with materials and finishes?

Yes, most extension builders in Grays Inn 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.