Extension Builders in Croxley Green

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (15 reviews)

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Some of our top rated extension builders in Croxley Green

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andrew mellish plumbing and heating services ltd
Rating: 4.6 out of 5
Extension Builder in Croxley Green
My name is Andrew Mellish, and I run Andrew Mellish Property Home Services. I am 39, married, with 3 sons. My team is made up of 6 full time tradesmen. We take on all domestic build/renovation projects. With decades of experience within the team, you can be assured of the highest standards.
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Latest review:
Bathroom Fitting- 10 Nov 2013
Andy and his team did a good job replacing our bathroom and cloakroom. The job overran due to a couple of logistical problems with different tradesmen, but Andy did his best to minimise the disruption. Good communication and accurate quote, which was stuck to. Overall, we're happy with the outcome.
Construction
Rating: 4.2 out of 5
Extension Builder in Croxley Green
Produce materials that adhere to architectural specifications. - Install floorboards, skirting boards, window frames, parquet flooring, doors, door frames, staircases, and built-in furniture. - Includes fixtures such as door handles and locks, cabinet handles, stair railings, and additional fittings in the design and execution. - Constructs temporary housing and support systems for concrete setting (shuttering). - Installs fire doors and implements fire stopping measures. - Installs metal beams. - Installs floor joists. - Works on roofing structures, roof tiles, and flat roofs. - Creates Velux openings if needed. - Completes loft conversions (first and second fix). - Performs house extensions (first and second fix, complete). - Acts as a medium bricklayer. - Constructs timber partitions, stud walls (first and second fix). - Installs plasterboard and completes dry lining. - Assembles kitchen units (completed). - Performs bathroom tiling and installs second fix accessories (tools required). - Installs gutters and rain channels. - Completes paving and decking.
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Latest review:
Carpentry- 4 Apr 2026
Dragos was punctual, polite and extremely efficient. The work was completed to a high standard with care and professionalism. I would happily recommend him.
Building services
Rating: 4.7 out of 5
Extension Builder in Croxley Green
We are specialists in Loft conversion, extension, refurbishment, carpentry and decorating projects over the past 20 years, we provide all type of general building services & refurbishment projects with our skilled and reliable team. We are a company you can trust for all Commercial, Domestic services. Contact us for Free Quotation!
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Latest review:
Carpentry- 7 Aug 2015
Excellent service and very professionally carried out. Rahim came round at a time that was convenient for me and charged a very fair price for the job. Would certainly recommend.
R & K Contracting Ltd
No reviews yet
Extension Builder in Croxley Green
R & K Contracting Ltd Amazing building contractors that cover absolutely everything. Where if it’s Exetentions, Refurbishment, New Builds, Plastering & Painting, Bathroom & Kitchen fitting and Many more. We have a lot of experience in the Building Industry with over 12 years experience.
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Patrick the Builder Ltd
Rating: 5 out of 5
Extension Builder in Croxley Green
Hi I’m PATRICK from Patrick the builder end I’m very happy to the next job for you General building Brick work Block work Full Refurbishment Loft Conversion Fibreglass roof Garage conversion Dive way Patios Garden conversion & Maintenance
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Latest review:
Extensions- 13 Mar 2022
Patrick and his team were hired to build a garden room. Reasonably priced, offers solutions to problems that might arise during building work, polite and easy to work with. He will also bring his expertise into the project and suggest different ways of doing things or using different products. Happy with the build and will definitely use him again for future projects.
Chic Deco LTD
Rating: 5 out of 5
Extension Builder in Croxley Green
Chic Deco is one of the best and affordable Design & Build company. Over 15 years experience allowed as to bring positive changes in many properties. We offer a full range of services from planning to project completion, covering all aspects of the building works. We are happy to meet and provide you with a friendly free consultation and estimate.
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Latest review:
Extensions- 3 Feb 2019
Tiberiu and his team are really nice people as they did such a wonderful job, and gave me great alternatives. Good skilled and hardworking people in his team. I have already recommended him to my friends and family and I will definitely use them again.
J M HARJI CONSTRUCTION LIMITED
No reviews yet
Extension Builder in Croxley Green
J M Harji Construction Ltd is a reliable and experienced building company specialising in high-quality residential and commercial construction. We handle everything from extensions, refurbishments, and renovations to new builds and structural work. Our skilled team takes pride in delivering excellent workmanship, clear communication, and projects completed on time and within budget. Whether you’re improving your home or starting a new project, you can count on us for professional service and outstanding results.
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Adam Renovations Ltd
Rating: 5 out of 5
Extension Builder in Croxley Green
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.
Ardent home improvements
Rating: 5 out of 5
Extension Builder in Croxley Green
We are a Passionate & Enthusiastic Building Company, Offering a Complete Refurbishment and Building Service to Both Residential & Commercial Property Owners.
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Latest review:
Bathroom Fitting- 13 Oct 2015
Reece and his father did a great job in our bathroom and he was a real pleasure to deal with . He went above and beyond the role as he had to order and collect a bath end panel as he suggested it would be a better match from the one I had selected . He was correct in this. He is he first builder I have ever known to suggest an improvement, source it and collect it as part of the job !! I would thoroughly recommend him. :)
SKYTOUCHROOFING LTD
Rating: 5 out of 5
Extension Builder in Croxley Green
Hello my name is Harpreet singh, I have been roofing since 2001. Over these few years i have now skilled how to tile, slate roofs meaning I am able to do any type of roofs. Every customer has always come back as they loved the service and the outcome of the job. All staff are very polite and friendly, everyone collaborates with other team members. New roofs can be installed on residential and commercial buildings, following industry standards safety guidelines. If you are not sure about needing a new roof we can inspect roofs for leaks, cracks or other damage to perform necessary repairs. Our equipment is up to date with new roofing materials and best practices. Physical fitness is a key towards this job and this is a key skill all our staff have they are all very strong, heavy items can be lifted. My knowledge on this job is key and accurate as I have been roofing for 23 years. I have a familiarity with different roofing materials, also experience with this job. I have excellent communication skills as I am always collaborating with staff or clients about work.
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Latest review:
Roofing (Pitched)- 22 Jun 2026
Mr Singh was very polite and professional. He carried out all works within schedule. I would recommend his services.
WOODHOUSE BUILDERS LIMITED
Rating: 4.8 out of 5
Extension Builder in Croxley Green
Welcome to Woodhouse Builders Ltd, we cover all aspects of property maintenance and no job is too small or big for us. If it’s a small decorating job or full property renovation , loft conversion or extension , we are here to help and provide the best services possible . Our success is built on providing the best services and ensuring that all our customers are happy with our services.
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Latest review:
Extensions- 6 Apr 2020
Art & team did a brilliant job in building my rear extension and renovating the whole apartment. Communication was excellent throughout and the job was completed on time and to the agreed budget. The finish throughout was to a high standard. I would definitely work with these guys again and highly recommend. Regards MZ
Mad property care Ltd
Rating: 4.4 out of 5
Extension Builder in Croxley Green
Professional builder with many years’ experience, I get the job done. In the 16 years spent in construction I picked the skills required to get the work done without the need of another specialist. I’m a carpenter by trade but I’m also a plumber & so much more, I’ve dealt with all kinds of trades, building control, engineers, architects, electricians.
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Latest review:
Conversions - General- 16 Apr 2024
Job completed. Very professional and efficient service. Would highly recommend.
Ash Managing Investments Ltd
Rating: 5 out of 5
Extension Builder in Croxley Green
Ash Home Renovations turn your dreams into reality and achieve complete client satisfaction by understanding, designing, creating and building your vision in the most cost effective way, with a quick turnaround. One company does it all. All work undertaken is fully insured and guaranteed.
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Latest review:
Quality of the workmanship has been to very high standard, we are extremely pleased with the end results. During thr project, the team often came with ideas and recommendations along the way. The team clearly have a lot of experience and are well organised.
Connect Maan Builders Ltd
Rating: 5 out of 5
Extension Builder in Croxley Green
cmbj
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Latest review:
They handled the project professionally as promised, Highly Qualified team and have technically knowledge of all aspects
Dan
Rating: 5 out of 5
Extension Builder in Croxley Green
I do loft, extensions and refurbish houses (General building)
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Latest review:
Hi, Dan recently completed a loft conversion and ground floor extension for our house in Ealing. It is the second time I've used him for a loft conversion. We are delighted with the work, team, price and timing and I highly recommend him. Dan is entirely trustworthy, and the team are a mixture of his family, friends and choir group. Like all projects there were a few snags and without fail Dan was pragmatic, helpful and keen to make sure we were happy with the quality at the end. I've recommended him to neighbours on both sides who are both pleased and happy to recommend him.
Jeffrey Worts
No reviews yet
Extension Builder in Croxley Green
I am a reliable trustworthy local builder with a vast range of experience built up over 40 years in the industry. Able to help you in designing and fulfilling your project.
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3.9

Top rated Extension Builders

Our Extension Builders in Croxley Green, are rated 3.9 out of 5 based on 15 reviews from customers like you.

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

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 Croxley Green 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 Croxley Green who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Croxley Green?

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

Find extension builders in Croxley Green with MyBuilder

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

Step 2: Compare different extension builders in Croxley Green

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

Step 3: Hire Croxley Green extension builders with confidence

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

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

What to ask a Croxley Green extension builder before hiring?

Before hiring an extension builder in Croxley Green or extension building company in Croxley Green, 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 Croxley Green?

An extension builder in Croxley Green 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 Croxley Green 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 Croxley Green?

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 Croxley Green 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 Croxley Green 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 Croxley Green

Can an extension builder in Croxley Green help with planning permission?

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

Many Croxley Green 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 Croxley Green help with materials and finishes?

Yes, most extension builders in Croxley Green 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.