Garage Conversion Companies in Castelnau

Name: Garage Conversion Specialist
Brand: MyBuilder
SKU: garage-conversion-specialist
Rating: 4.8 (48 reviews)

Easily find verified Castelnau Garage Conversion Companies. Just post your job to get quotes from MyBuilder's Garage Conversion Companies in Castelnau.

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 garage conversion specialists in Castelnau

1267 Results

Sort by:

Redmark Contractors Limited
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
Redmark Contractors Limited have over 10 years experience, and with many years experience in the building trade. We are a professional team are reliable builders operating in London and the wider area. We take great pride in all work which we undertake, taking great care to make sure that our client’s needs are met in a meticulous and professional manner.
Get in touch
Latest review:
Extensions- 27 May 2025
They helped build me two houses and were always putting their best foot forwards. Bhupinder and his team are lovely, and are now like family to me. They have a bright future ahead for themselves and for the clients they look after.
P&M Property Renovation ltd
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
P&M Property Renovation Ltd is the company specialised in house and flat renovations, carpentry, flooring, kitchens, bathrooms, tiling, painting & decorating, loft, and extensions.
Get in touch
Latest review:
Conversions - General- 25 May 2022
Pawel worked on my son's property in Notting Hill, London. The final result was absolutely wonderful. I found Pawel incredibly helpful, skilful and willing to change things last minute, as I procrastinated over every job! He left the property clean and tidy each day, and the end result was a flat that has been transformed and improved beyond recognition. I would thoroughly recommend Pawel and will definitely use him again in the future.
M-CBS Mario Carpentry & Building Services
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
We offer a wide range of services from small repairs to full extensions, conversions and refurbishments. We cover interior and exterior work for both residential and commercial clients All work is carried out by highly skilled and qualified craftspeople.
Get in touch
Latest review:
Bathroom Fitting- 15 Nov 2017
Mario was an absolute gem from start to finish. After a leak left our only bathroom out of action Mario came in and managed the full project to perfection (and also had a great tiler and electrician who did some other works). Six months on and I cannot fault any of the works. Highly recommended.
Agnuss Construction Ltd
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
We are a construction company that operates in the local area mostly, but we can also cover all the other areas of Greater London. Our Services include Extensions, Loft Conversions, Refurbishments, and basically all the aspects of building work. We specialise in residential and business projects.
Get in touch
Latest review:
Agnuss Construction carried out and completed our house renovation, kitchen extension and loft extension successfully. Elio and his father, Mario were very communicative throughout and very reliable. The works were carried out on time and on budget. I would be happy to recommend Agnuss Construction and use them again in the future.
Zhu Construction LTD
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
We are a family run construction business that undertakes numerous building works. Our team comprises of skilled individuals with our lead project manager holding over 20 years building experience. The most common types of work we carry out are: loft conversions; single story extensions; full internal and external house refurbishments.
Get in touch
Latest review:
The works were for a full house refurbishment. This included bathroom and kitchen installation. Also, each room was brought to a high standard. The works were done in a timely manner and the staff were super friendly. If you had any questions they would assist with no problem. Definitely builders I recommend.
Dave lofts
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
Thankyou for viewing 😊 A bit about myself •specialist in all types of carpentry •roofing work undertaken repairs or renewals • reliable & Trustworthy •Hardworking •friendly Always happy to discuss jobs and give professional advise Dave
Get in touch
Latest review:
Carpentry- 28 May 2025
Dave did a great job, he was on time and very clean, did a very good job for us
Ruci Construction Ltd
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
1.Painting and Decorating 2.House Refurbishment 3.Carpentery 4.Flooring(tiling and laminate) 5.Extension 6.Landscaping and Decorating Gardens 7.Loft Conversation and Roof repairing 8.Handyman and more
Get in touch
Latest review:
Kitchen Fitting- 20 Jan 2026
Excellent! Will use them again for other jobs
TW Building & Plastering Maintenance
Rating: 4.8 out of 5
Garage Conversion Specialist in Castelnau
Providing all aspects of building and plastering and general maintenance, Fully qualified with over 19 years experience. Supplying a professional, friendly service at competitive prices. We provide a free no obligation quotation for any job. With a team of Clean, tidy, respectful and courteous members.
Get in touch
Latest review:
Conversions - General- 7 Apr 2021
Bobby arrived with his colleague exactly as planned. They completed the work faster than I had imagned possible, all to a good standard of finish. All rubbish was cleared at the end. I am very happy with the work done
Nenad Jevtic
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
I've start working in the building industry 15 years ago. Over the years working in the industry I have moved up the lader and for last 4 years worked as project manager for different building company's . I have vast experience in designing and working on projects to highest standards to meet deadlines and within the budget . I have team of highly experienced tradesman and we always go extra mile to meet customers needs.
Get in touch
Latest review:
Conversions - General- 6 Feb 2019
Nanad and his team have been wonderful from day one. We have had them with us a number of weeks doing all the jobs they quoted for and more, they are fast efficient and courteous of the fact we lived in for a lot of the work. Everything has been finished to a great standard and we are thrilled with our house which has been completely transformed. We have already recommended them to friends and will continue to do so and hopefully have them back in future. They are creative, solve issues that crop up easily and without fanfare extremely hardworking and all round an excellent team! Thank you for everything! Emma and James
WOODHOUSE BUILDERS LIMITED
Rating: 4.8 out of 5
Garage Conversion Specialist in Castelnau
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.
Get in touch
Latest review:
Conversions - General- 29 Dec 2025
Thank you would highly recommend
MJ Carpentry and Build
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
hi i’m matt im a carpenter and builder working on site for 26 years really enjoy it got a eye for detail have to be clean and tidy got a great team of all trades check out my website!
Get in touch
Latest review:
Carpentry- 1 Dec 2024
Matt and his team did a great job building my Summer House. At every stage they checked that their work was fulfilling my needs, and took on board my suggestions. The whole job was completed within budget and time. I would have no hesitation to engage them again, should the need arise. Thanks Matt.
Apex Plan & Build LTD
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
Apex Plan & Build is your trusted partner in turning vision into reality. Specializing in both domestic and commercial construction, we are dedicated to transforming houses into dream homes and businesses into efficient, modern spaces. With over 30 years of collective industry experience, our team ensures every project is completed to the highest standard, offering expertise in M&E works, including air source heat pumps and MVHR ventilation systems. We also bring cutting-edge innovation to your space with smart home automation solutions like Loxone and Control4, creating environments that are not only beautiful but also intelligent and energy-efficient. Apex Plan & Build is where your dream project is our top priority.
Get in touch
Latest review:
Very professional and organised. My rear extension renovation was impeccable, thorough knowledge of building regulations with a variety of services to choose from really put me at ease. The venetian plaster feature wall has become the centrepiece of our home.
BL Carpentry
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
Hello! My and my team are working on all kind of construction projects trough London. We've got 15 years of experience and many happy and returning clients.
Get in touch
Latest review:
Multiple fitting out works, eg fitted cupboards, kitchen fitting. Top notch. Knowledgeable, fair, prompt. Would enlist his help again.
BLUELIME CONVERSIONS LTD
Rating: 4.7 out of 5
Garage Conversion Specialist in Castelnau
Bluelime is an established planning, design and construction company providing professional property services across London and the surrounding areas. Established in 2007, we have nearly two decades of experience helping homeowners successfully extend, renovate and transform their properties. Our services include architectural design, planning applications, interior design, structural engineering, building regulations, project management and construction. Whether you require assistance with one individual stage or a complete design-and-build service, we provide honest advice, creative solutions and a clear, professionally managed approach from the initial consultation through to completion. We have a strong track record of planning approvals and successfully completed projects. We have also been active on MyBuilder since 2012 and hold a 4.7 out of 5 customer rating, reflecting our long-standing commitment to quality, reliability and customer service. We offer a free initial consultation to discuss your property, understand your requirements and advise on the best way to move your project forward.
Get in touch
Latest review:
Architecture- 18 Aug 2025
Despite some initial positives, the project was ultimately marred by poor communication, unprofessional conduct & serious breaches of trust. We strongly advise against using Bluelime due to the stress, financial impact, & unresolved issues we faced. While kitchen & bathroom installations were OK & progressed quickly, Bluelime deviated from approved plans in a conservation area, causing compliance issues (estimated correction costs of £15–£20k). Heating & insulation were poorly installed, & second opinions confirmed our dissatisfaction. Communication broke down, with responses defensive and intimidating. Costs rose unexpectedly (e.g. door fitting from £1200 to £2640) & inflated quotes in later stages. The property wasn’t ready for move-in multiple times, disrupting our young family. Additional concerns included missing tools, ignored warranties, inconsistent workmanship & misleading claims about affiliations. We urge others to check Bluelime (Alton Campbell) on Companies House.
Complete Construction london
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
At Complete Construction we have a complete team to undertake all building and renovation works.We have been trading over 12 years,and forever growing.Priding ourselves on reputation and reviews and can offer plenty of references from recent clients.Having been known to have the team you want on your project,we are now being prided on our unbelievable Painting and decorating team
Get in touch
Latest review:
Restoration & Refurbishment- 16 Jun 2023
Amazing job by Ross and his team! They're easy to deal with and the job was completed on time and to budget :) Will definitely use again! Thank you so much!
ritz builders uk ltd
Rating: 5 out of 5
Garage Conversion Specialist in Castelnau
Ritz Builders UK Ltd can take care of any property renovation or house extension, from complex double basement developments to a new builds. Our builders have worked on various type of properties across UK, giving them a new light and converting them into modern and contemporary living spaces. Our professional construction team, who come supported by a dedicated workforce, are well regarded by commercial and residential property developers.
Get in touch
Latest review:
The builder was reliable and dependable. Work was neat and to taste .

4.8

Top rated Garage Conversion Specialists

Our Garage Conversion Specialists in Castelnau, are rated 4.8 out of 5 based on 48 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 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.