Garage Conversion Companies in Castelnau

Name: Garage Conversion Specialist
Brand: MyBuilder
SKU: garage-conversion-specialist
Rating: 4.9 (46 reviews)

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Some of our top rated garage conversion specialists in Castelnau

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LEBELLE HERITAGE & RESTORATION LTD
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
Lebelle Heritage & Restoration Lebelle Heritage & Restoration is a professional building and construction company specialising in renovations, refurbishments, and heritage restoration. We take on all types of projects, from full property renovations and structural upgrades to detailed interior finishes and the careful restoration of period features. Our team is skilled in both traditional craftsmanship and modern construction methods, allowing us to deliver work that is reliable, high-quality, and built to last. Whether we’re restoring the character of an older property or breathing new life into a modern home, we focus on precision, honesty, and clear communication throughout every stage of the job. We pride ourselves on delivering clean, efficient, and well-executed work that meets the needs of our clients and respects the integrity of each building. At Lebelle Heritage & Restoration, we build, renovate, refurbish, and restore with a commitment to quality and long-term durability.
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Latest review:
After a previous contractor took our money and left our loft extension unfinished, we were devastated and worried about how we would ever get our home back to normal. Then Lewis from Lebelle stepped in and completely turned things around. Lewis was patient, understanding, and incredibly professional. He worked quickly, kept costs under control, and finished the loft extension to a standard we’re so happy with. The stress he took off our shoulders was unbelievable. We honestly can’t thank Lewis enough. If you’re looking for someone trustworthy, skilled, and genuinely caring, Lebelle is the company to call.
13-13 BUILDERS LTD
Rating: 4.5 out of 5
Garage Conversion Specialist in Castelnau
I do plastering, plaster board, carpentry, partition, roofing, groundwork’s, driveways, gardening, extension, loft conversions
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Latest review:
Conversions - General- 9 Nov 2025
Amazing fast service. Lovely communication. Good finishing. Fast removal of drywall and steel frame. Worked on weekend as well. Would recommend to everyone.
NB Building services
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
Hi my name is Nikolay and I’m working with small team of 4 people more then 8 years!We are doing loft conversions,house extensions and full refurbishment!We have lot of jobs done and more then happy clients!Have a large range of recommendations!Public Liability Insurance also available!
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Latest review:
Extensions- 9 Oct 2022
We engaged NB Building Services to build an extension (new garage and room at the rear) and extensively refurbish/remodel a bungalow. I met a number of builders/building contractors but I felt immediately comfortable with Nick right from the start. It was the first time we were ever starting such a project and we wanted to follow our instinct and go with someone we could be comfortable with over the duration of the project. Right from the start Nick came across as someone who is genuine and who looks to understand your requirements. Also, as my project had a few uncertainties that could affect the scope of the project I was looking for some flexibility and I felt that Nick and his team could provide that. Nick and his team (Stefan, Boris and Ilco) work very well together as a cohesive team. Nick provided a day-to-day customer contact while scheduling tasks on the building site and coordinating material deliveries. Every member of the team worked a full day and on occasions where it was important to finish something on the day, they would stay late to finish the job. What impressed me most when the work started is that the entire team is multiskilled – they do everything from bricklaying, timberwork, roofing, plaster/skimming etc. This helped me immensely when there were minor changes or modifications. That meant we didn’t have to wait for the bricklayer or plasterer to return to the site again. Nick also operated the heavy machinery like digger/breaker etc. Once the initial structure was complete the team again impressed me with their attention to detail when they moved inside to lay down plumbing, electrical wires, gas pipes etc. Nick and Stefan took the lead on the fine finishing tasks inside while Boris and Ilco provided important support and completed a lot of other tasks inside and out. It was during this critical phase when communication is most important that I appreciated Nick’s effort to keep us informed. As far as quality of work is concerned while we were happy with everything, I think the tiling work of both Nick and Stefan is outstanding. Our project lasted for about 8 months and while there were lots of discussions on areas of the project that I did not understand and I asked a lot of questions and also changed my mind on some things I don’t remember I we ever even had a minor argument. This I felt was an important win. Nick was also generous with his time and provided help to other trades who came on site e.g. window fitters, garage door installers; boiler installers; electricians etc. Nick and his team returned a few months later to lay down a patio with porcelain tiles for us and also a driveway with block paving. Once again Nick and his team discussed with us in detail what we wanted and provided suggestions based on their experience.
The Gate Property Management
No reviews yet
Garage Conversion Specialist in Castelnau
Welcome to The Gate PM – Your Trusted Partner for Complete Home Transformations 📍 Where we work: We cover the wider London metropolitan area, bringing our reliable service to homeowners across London and the surrounding regions. 👷‍♂️ Our experience: With years of hands-on experience in the construction industry, we have successfully completed countless projects ranging from small refurbishments to full-scale extensions. Our portfolio includes everything from listed building renovations to modern loft conversions and new-build extensions. 🛠️ Our special skills: We offer a true one-stop shop for all your building needs. Our in-house team covers: · Full renovations and refurbishments · Extensions, loft conversions, and conservatories · Kitchens, bathrooms, and plumbing · Roofing, flooring, plastering, and tiling · Porch, driveways, and external landscaping · Electrical installations and rewiring · Painting and decorating ✅ Why hire us: We believe in honest communication, transparent pricing, and exceptional craftsmanship. Every project is managed personally from start to finish, ensuring quality control and peace of mind. We're fully insured, pride ourselves on cleanliness and reliability, and won't leave.
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Quinn's Builder's
Rating: 4.7 out of 5
Garage Conversion Specialist in Castelnau
Hi my name is Chris my company is Quinn's Builder's. I have a motivated, reliable and friendly team that have over 20 years experience in the building industry. 100% great feed back from all my customers! We specialize in Full Refurbishments, extensions, patio's, kitchens/bathroom insulation , electrics, plumbing, roofing, flooring, decorating, window/door fitting, garden/fencing. We can carry out any job big or small. Contact us for a free quote.
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Latest review:
Conversions - General- 31 May 2022
Very good workers..always knowledgeable and friendly..also on time
builder
No reviews yet
Garage Conversion Specialist in Castelnau
14 years of experience in plastering, tiling, bathroom and kitchen fitting. I have my own team of skilled builders
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Swift Building Masters
Rating: 4.9 out of 5
Garage Conversion Specialist in Castelnau
General Builder of over 40 years Experience. Carpentry & Joinery Background. I have worked on large and small Projects, Repair, Refurbishment, Extensions, Loft conversions and New-builds. Recently become a member of Federation of Master Builders. ALL WORK QUALITY ASSURED
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Latest review:
Conversions - General- 25 Mar 2020
Les and his team did an excellent job. He took the time to talk me through all the requirements, made a reasonable offer, and then executed the job, together with a team of co-workers, exactly as we had agreed - swift as the name of the company. We are happy with our new staircase, thanks a lot for the good work!
Probuild lbp limited
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
We are a friendly professional building company that undertake all aspects of building work. All are work is done to the highest standards we treat every job as if it was at are own home. We have done everything from extensions loft conversion to kitchen fit outs and landscaping. We pride are self on giving every customer what they ask for and always being happy to advise on the best ways to get the results they want.
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Latest review:
Conversions - General- 14 May 2025
Lee did a fantastic job of making a walkway through an interior wall. He was prompt, efficient and also gave some helpful advice on other building queries we had at the flat. Very pleased with end product!
Cool Dudes Construction
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
We do all sort of house renovations including new build extensions and loft conversions , bathrooms . Your satisfaction is our job
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Latest review:
Extensions- 13 Dec 2025
Most perfect guys to do the job. Nothing was to much trouble, very professional, we are absolutely in love with our extension and will 100% recommend and use cool dudes in the future.
JH CITY PROPERTY CONSTRUCTION
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
JH City Property is a London-based renovation company delivering high-quality residential and commercial projects. With over 18 years of experience, we specialise in full property refurbishments, including painting and decoration, flooring, kitchens, bathrooms, roofing, and structural works. All projects are carried out by our in-house team, ensuring consistency, reliability, and attention to detail from start to finish. We focus on practical design, durable finishes, and delivering work to a high professional standard. We offer free site visits and quotations, and can also provide initial estimates from photos or floor plans.
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Latest review:
We had the outside of our house painted by JH City Property Construction and honestly they done such a good job. The house looks completely fresh and clean now. The team were really friendly, turned up on time every day and kept everything tidy while working. They also took their time with all the preparation instead of rushing through it, which definitely shows in the final result. The paint finish came out really smooth and neat, especially around the windows and front of the house. We’re really happy with how everything turned out and would happily use them again in the future.
Dominant construction ltd
No reviews yet
Garage Conversion Specialist in Castelnau
Dominant Construction is a customer centric integrated building company specialising in home renovations, loft and basement conversions, and kitchen extensions. With over a decade of experience, we have designed our processes to ensure that our clients projects run smoothly - always on-time and always on-budget. We keep clear lines of communication at all times to make sure projects are collaborative and executed with our client's needs at the forefront.
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aman building services
Rating: 4 out of 5
Garage Conversion Specialist in Castelnau
Aman Building Services pride in quality and satisfaction. We have been set up since 2009 and provide the following services; Driveways, New Build, Carpentry, Bathroom, Kitchen, Bedroom fitting, Loft Conversions, Metal Gate services, Plastering, Tiling, Roofing, Guttering, Porch, Plumbing and Heating, Painting, Glazing, Electrical, Landscaping, Garage/Outbuildings. We can also assist with Architect and Buildings Regulation services. NO JOB IS TOO SMALL
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Latest review:
Restoration & Refurbishment- 19 May 2024
Work completed yesterday
E&L CONSTRUCTION
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
E&L Construction is the leading provider of domestic construction work across London.As a family-run business customer service is at the forefront of our business, we specialise in every type of building work,home extension,including loft conversion etc.
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Latest review:
Conversions - General- 5 Apr 2024
Elson and the team did a great job on this project. The price was competitive, they worked quickly and efficiently and the finish was quality!! Will definitely be working with them again!!
JM Build Ltd
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
We are team of professional builders specializing in refurbishments, loft conversions and extensions.Do not hesitate to contact us for a no obligation quote. We are also proud member of Checkatrade. You Dream It We Build It.
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Latest review:
Extensions- 14 Jul 2021
Juro and his team completed a total refurbishment of our house that included removing all internal walls, along with a double story side extension, a huge job involving lots of steels, re-roofing, new construction, new bathrooms and kitchen, new windows and rendering along with all the plumbing and electrical work and decoration. They did the most incredible job, working efficiently, adapting to any problems that came along and working really hard to create the best finish possible at the budget we had. Despite the pandemic arriving just after the demolition stage, they didn’t miss a day on site, and worked tirelessly to get materials to keep the project moving. Incredibly they still managed to finish the project on schedule and to a standard that was exceptional. Juro is honest and upfront, didn’t ever add costs or ‘unforeseeables’ and was an absolute joy to work with. He also stuck to a very clear payment schedule that was easy to follow and always meant we only paid when we were absolutely 100% happy. My only reservation in writing this review is that I would like to selfishly hang on to him and keep his schedule clear for future jobs with family and friends!
London & Kent Best Kitchen & Bathroom Solutions Ltd.
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
Our highly skilled team of builders, carpenters, electricians, decorators and plumbers are reliable, trustworthy and dedicated to achieving the highest quality finish for your project; however large or small. Each project is tailored to your requirements and managed via a single point of contact.
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Latest review:
Conversions - General- 13 Nov 2017
We are very happy with Slywester and the work of his team. They were very hardworking and very tidy given the amount of work / knocking down walls they were doing. He was great at communicating and asking if any questions, and he worked out some very clever solutions to some of the challenges we found on the way. Would definitely recommend.
Ava Constructions & Decors
Rating: 4.9 out of 5
Garage Conversion Specialist in Castelnau
Ava Constructions & Decors Ltd is a UK-based construction and renovation company committed to delivering top-quality craftsmanship and reliable project management. We specialise in full refurbishments, extensions, bathroom and kitchen installations, and commercial fit-outs — always tailored to the client’s vision and delivered to the highest UK building standards. With a keen focus on transparency, timelines, and customer satisfaction, Ava Constructions has earned the trust of homeowners, investors, and developers alike. Punctuality and completion of work on time are a priority .Our team always respect the client wishes and work with them to achieve the best possible results to their satisfaction. Thank you in advance
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Latest review:
Conversions - General- 3 Jul 2024
Ava construction has absolutely been amazing , handled the project quite well and managed to finish it in the time frame. Highly recommended

4.9

Top rated Garage Conversion Specialists

Our Garage Conversion Specialists in Castelnau, are rated 4.9 out of 5 based on 46 reviews from customers like you.

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What types of services are offered by garage conversion companies in Castelnau?

A garage conversion specialist can walk you through every stage of transforming this often-overlooked space in the home.

Their services usually include:

Design consultation: Helping plan the layout and use of the converted space.
Onsite surveys and assessments: Checking the structure and suitability before work begins.
Managing planning permissions and building regulations: Ensuring your project complies with local rules.
Installing foundations and floor slabs: Strengthening or updating the base where required.
Infill of garage doors: Replacing garage doors with walls, windows, or entrances to match the new layout.
Insulating garage walls and roofs: Making the space energy-efficient and comfortable year-round.
Adding new windows and doors: Creating natural light and access points.
Electrical and heating installations: Adding power, lighting, radiators, or underfloor heating.:
Interior finishing work: Plastering, flooring, and basic joinery to prepare the space for final decoration.

Using MyBuilder’s matchmaking function, you can connect with a Castelnau garage conversion company near you in no time and get the help you need with your project.

Costs of garage conversions in Castelnau

Typically, a garage conversions in Castelnau can cost between £13,000 – £20,000, depending on the size of the space, the scope of work, and the quality of the finish.

Many factors make up this final figure, including:

Design consultation: £300 to £800
Onsite survey and assessments: £150 to £500
Planning permissions & regulations: £200 to £1,000+ (varies)
Foundations & floor slab work: £1,000 to £3,000
Infill of garage doors: £1,200 to £2,500
Insulation (walls & roof): £1,000 to £2,500
New windows and doors: £800 to £3,000+
Heating and electrical installation: £1,500 to £4,000+
Interior finishing: £1,500 to £5,000+
Hourly labour rate: £20 to £35 per hour
Daily labour rate: £160 to £280 per day

Read more about the average garage conversion cost to help you start budgeting for your project in Castelnau.

If you’re seriously considering a garage conversion, Castelnau specialists will be the best source of accurate pricing information. Find your options on MyBuilder, then ask for a quote from a conversion professional with knowledge of your project specifics. Post your garage conversion job today and choose from verified garage conversion companies in Castelnau.

Find a garage conversions specialists in Castelnau with MyBuilder

A garage conversion can be a fantastic way to increase your living space without moving but finding the right professional makes all the difference. Platforms like MyBuilder make it easy to find and compare garage conversion companies and specialists in Castelnau.

Follow a few simple steps to find the tradesperson for your job:

Step 1: Post your garage conversion job on MyBuilder for free

Describe your garage conversion project in detail, including your goals, the size of your garage, and any specific features you want to include; you can also include photographs to further demonstrate your project needs. Local Castelnau garage conversion companies can then review your posting and express interest.

Step 2: Compare Castelnau garage conversion companies and specialists

Once you’ve begun to receive responses, you can browse through profiles, review galleries of previous projects, and read feedback from other homeowners on our platform.

Step 3: Make your choice and start your project

Once you’ve reviewed your options, you can reach out directly to discuss your project in more depth and compare quotes to ensure the pricing is clear and competitive. You stay in control throughout the process, choosing the garage conversion company who best fits your needs, budget, and timeline.

All professionals on MyBuilder are verified at sign-up, including ID checks and skills assessments. What’s more, Castelnau garage conversion companies on MyBuilder have to be confirmed as a registered business before joining the platform.

FAQs: Frequently asked questions when looking for garage conversion companies in Castelnau

Do I need planning permission for a garage conversion in Castelnau?

Most garage conversions fall under permitted development, but planning permission may be required for listed buildings, conservation areas, or major structural changes. You should discuss this with your chosen Castelnau conversion company.

What building regulations apply to garage conversions in Castelnau?

All garage conversions must meet building regulations covering areas like fire safety, insulation, ventilation, and structural stability to ensure the new space is safe and habitable.

Do garage conversion specialists in Castelnau need specific qualifications or certifications?

While formal qualifications aren’t always required, specialists should have relevant experience and may hold certifications for regulated work like electrical or structural tasks.

Are garage conversion companies in Castelnau required to have insurance?

Yes, reputable garage conversion companies in Castelnau should hold public liability insurance to cover accidents or damage during the project, and many also carry additional cover for their work.

How long does a typical garage conversion take from start to finish?

A standard single garage conversion usually takes between 2 and 6 weeks, depending on the size of the space and the complexity of the work.

Can I live in my home while a garage conversion is carried out?

Yes, most homeowners can stay in their property during the conversion, though there may be some disruption from noise, dust, and limited access to certain areas.