Conversion Specialists in Castelnau

Name: Conversion Specialist
Brand: MyBuilder
SKU: conversions-specialist
Rating: 4.9 (46 reviews)

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Some of our top rated conversion specialists in Castelnau

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WILTON BUILDING SERVICES ENGINEERING
Rating: 5 out of 5
Conversion Specialist in Castelnau
We serve all construction infrastructure; building, electrics, plumbing, carpentry, and more. Our services span from initial planning, through start-up and operations. We have helped customers to complete their projects, and improving their life. Characterized by the quality of our work and our persistent drive to deliver the most successful outcomes, we align our capabilities to our customers’ objectives to create a lasting positive impact.
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Latest review:
We had an excellent experience with Wilton. They made the process straight forward and quite painless from start to finish. Everything proceeded efficiently and we are thrilled with the final results. Two beautiful new bathrooms, finished on time. A great experience from start to finish.
SAABCO VENTURES Ltd
Rating: 4.7 out of 5
Conversion Specialist in Castelnau
Complete Home Improvement Service At SAABCO Design & Build we guarantee all of our work and can undertake all aspects of your home improvement project; from planning your home’s interior to creating stunning bathrooms and kitchens. A team ready to realise your dreams and design the home you’ve always wanted.
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Latest review:
Carpentry- 22 Aug 2018
In the end, Saabco did a much larger job, decorating the entire flat. The quality was excellent and I couldn't fault them for professionalism. Definitely recommend.
Lighthouse Building Ltd
Rating: 5 out of 5
Conversion Specialist in Castelnau
General building company specialising in refurbishments, new builds. Plastering, carpentry, kitchens, bathrooms etc.
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Latest review:
Painting & Decorating- 17 Jan 2019
We engaged Maciej for a plastering and painting job to repair damage following a roof leak. He also sorted out replacing some of our roof insulation that had also been damaged. Maciej was very efficient and creative in what he proposed. Even though there were unforeseen issues with the job he kept to his original quote. He was tidy and managed to complete the job without putting us to any great inconvenience. Maciej is trustworthy and reliable. I would have no hesitation recommending him.
Sebek Construction Ltd
Rating: 5 out of 5
Conversion Specialist in Castelnau
Sebek construction family run business for the last 20 years. High quality refurbishment specialits. Kitchens, bathrooms, loft conversion and extension. all work comes complete with public liability insurance.
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Latest review:
We have been working with Derek Borkiewicz (Sebek Construction) on a renovation of a garden flat in Little Venice since last autumn. We needed to completely restore the whole flat, including the garden. This was our second renovation project and by this time we knew what we wanted to do, which mistakes to avoid and what to pretend from a qualified builder. We will never stop saying how lucky we have been to find Derek and his team! Derek is not only a professional builder who is very careful to the smallest of the details. He is not only a very good project manager who is constantly checking the work of his men. Derek is a friend who takes on board a project like it is his own project. He suggested the most convenient and best solutions for any problem we came across during the works. There wasn’t a time when he didn’t know what to do to solve a difficult situation (and there are lots of small and big issues coming up in a renovation work) no matter how complicate they were and how long it took to solve them. His availability and his courtesy are incredible above all in a fast running city like London. This is priceless to us. His hard work can be seen in the wonderful result we reached with this garden flat. If we ever decide to work on another project we won’t think twice about working with Derek once again. In fact, now that we found the perfect man to work with, we are looking forward to finding another renovation project to work on! Monica
Regal Construction Services Ltd
Rating: 5 out of 5
Conversion Specialist in Castelnau
Free Viewing & Quotation Contact us to arrange a free viewing by one of our managers. After the viewing, all the information obtained will be handed to our Quantity Surveying team, who will assess the extent of the work and produce a detailed Quotation, including a full break down of labour, materials and plant. This will be sent to you via email for your perusal. If you are not happy with any aspect of the quotation, we can arrange a second visit and go through the quote with you.
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Latest review:
Conversions - General- 3 Aug 2021
Regal have been absolutely brilliant. They carried out the work professionally and to a very high standard. The willingness to go the extra mile was greatly appreciated and we will be using Regal for all our projects going forward. Could not recommend them highly enough!
GNTbuildingcontractors
Rating: 5 out of 5
Conversion Specialist in Castelnau
GNTbuildingcontractors All domestic building and landscaping work undertaken (No job 2 big No job 2 small)
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Latest review:
Conversions - General- 8 Aug 2023
Very happy with the work. The team stripped the house and installed a larger window.
Home Design & Build
Rating: 5 out of 5
Conversion Specialist in Castelnau
Tooled with years of experience, we undertake design & reconfiguration of builds; adding value to your home or business. Working closely with you; we create a bespoke, quality finish within your budget & affordability. Delivering a high standard of skill & integrity of craftsmanship we are proud off
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Latest review:
Conversions - General- 30 Jun 2017
The project was a complete renovation of 2 bedroom period flat - adjusting internal walls, new kitchen, 2 new bathrooms, electrics, boiler, rads, new floor etc + full decoration. The Home Design & Build team were fantastic from start to finish - I'd give them 5 stars and would fully recommend. The quality of the work is outstanding - great craftsmanship and attention to detail + a very 'can-do' attitude to the bespoke elements and alterations that occurred throughout the project. The quote was clear and competitive, and the project stayed on budget aside from a few small additions to the scope which were added on at fair and transparent rates. It also stayed within the planned timescales (which is a first from my experience) and the team worked hard to complete on time. Both Lalli (who managed the project) and Mario (who led the work) were great to work with, highly capable and full of helpful and practical suggestions to the detail of the design.
Solid Group Renovations
Rating: 5 out of 5
Conversion Specialist in Castelnau
We are a highly experienced and skilled team specialising in property refurbishment and renovation. Our expertise includes HMO conversions, loft conversions, house extensions, and complete property refurbishments. We work closely with our clients throughout every stage of the project, ensuring clear communication and a smooth, stress-free experience. We are always accessible and committed to keeping you informed, so you remain in control of your project from start to finish. Our goal is to deliver high-quality workmanship and bring your vision to life, helping you achieve the renovation or property transformation you have always envisioned.
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Latest review:
Conversions - General- 17 May 2025
Saba and his team were amazing. Excellent attention to detail, great communication, and a pleasure to deal with. Having worked with several contractors in London, I can tell you that he and his team are the only crew that I would be willing, and excited to work with again. Highly recommended. 5 stars.
Zebra Property Limited
Rating: 5 out of 5
Conversion Specialist in Castelnau
Looking to increase space within your property, restructure the layout, a new bathroom/kitchen or just re-decorate. We do it all. We have put in basements, loft conversions, side returns and even a swimming pool. We provide a 'do it all' service at the highest of qualities for all our clients.
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Latest review:
Restoration & Refurbishment- 20 Jul 2015
We hired Zebra Property for a complete strip out and refurbishment of a GF flat. The JOB: The job included initial removal of existing bathroom, kitchen and flooring. The works itself were for a side return wrap around kitchen extension, basement refit, installation of new kitchen and bathroom, new windows (including velux) and bifold doors, tiling and complete decoration throughout. FEEDBACK: Zebra were a great company to work with on this job. Communication levels were clear. There were inevitable delays to the project but there was always a focus to get back on track and deliver as quickly as possible. The resulting finish is a high standard throughout the property, with any minor snags completed quickly. Thank you!
J C Neill Carpentry
Rating: 4.7 out of 5
Conversion Specialist in Castelnau
J C Neill carpentry Offer a range of bespoke carpentry services executed to the highest standards and always on time.
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Latest review:
Hard Flooring- 13 Sep 2021
John did a great job and according to the timelines. He’s very professional, considerate, communicates well and on top of that is a nice guy! 100% recommend
Arethusa Restoration
Rating: 5 out of 5
Conversion Specialist in Castelnau
"ARL-Contractors" Arethusa Restoration Limited Is an Italian company offering an unrivalled quality of service as both Principal contractor in the refurbishment and renovation of houses, extensions, loft conversion and, commercial restoration and fit-out & Specialist contractors in the restoration of period and historic buildings, offering a niche service spanning traditional façade cleaning, restoration, conversion into new luxury modernised living spaces.
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Latest review:
Plastering- 19 Dec 2018
Roberto came out to site and quoted, I felt very confident and reassured by him very quickly. He quoted for the whole work and arrived and left on time. There was a lot of attention to detail on this job I am happy with his work, he is highly skilled, works hard and is also nice to be around. I will hire him again, if I need his speciality services in the near future.
We Fix Your House Ltd
Rating: 5 out of 5
Conversion Specialist in Castelnau
We Fix Your House is a family-run, small team of experienced industry specialists with many happy clients in and around London. We take pride in our work and ensure that our customers are always happy. So whether you're are looking for a little DIY help, or a complete renovation of your property, we're happy to help. You'll be pleasantly surprised by our competitive prices too, and YES, we can work around your budget.
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Latest review:
Plastering- 28 Apr 2019
Great job, very professional
J PARTNER GROUP
Rating: 5 out of 5
Conversion Specialist in Castelnau
J Partner Group Ltd is a trusted London-based company specialising in property renovation, bathroom and kitchen fitting, loft conversions, extensions, and full refurbishments. Our skilled team delivers premium workmanship, reliability, and attention to detail, ensuring every project is completed on time, within budget, and to the highest standard. Customer satisfaction and quality are at the heart of everything we do.
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Latest review:
Restoration & Refurbishment- 30 Dec 2025
Most of the work is now complete, and the quality of workmanship and attention to detail shown by this team has been absolutely outstanding. They are true experts who carry out their work to exceptionally high standards. I am extremely impressed with the care and respect they show towards my property, treating it as if it were their own and never compromising on quality. Top-notch work so far.
Axe Construction Ltd
Rating: 5 out of 5
Conversion Specialist in Castelnau
Hello and welcome to Axe Construction Ltd. If you are thinking of renovating your home, building an extention or arranging general maintenance in your property, we are here to help. Our priority in job is to deliver high standard service to customer’s satisfaction.We offer a professional and friendly service to all private and commercial clients in and around London We are always go above and beyond to satisfy our clients.We are happy to provide references from our clients and arrange site visit
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Latest review:
Conversions - General- 7 Feb 2019
Paul and his team completed our project timely and at a competitive quote. The team was friendly and easy to communicate with. We had some specific requirement and they were able to find solutions for us quickly. Overall we are happy with their work.
Tawfik Werfalli
Rating: 5 out of 5
Conversion Specialist in Castelnau
At Miko Construction, we specialise in high-quality residential refurbishments, extensions, and fit-outs. We’re a small, experienced team that takes pride in delivering well-crafted work with clear communication throughout. Whether it’s a full home renovation or a bespoke interior project, we bring a personal, hands-on approach from start to finish.
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Latest review:
Tawfik’s team was very professional and very knowledgeable, they done a great work including helping me with the design and understanding the process required to complete a project at this size, he completed the electrical work tested it and also included great ideas with the LED lights that made A beautiful design at the end, he also recommended a lot of subcontractors in the area are very competitive in their price and practically manage the project with me from inception to completion.
Southfields Builders Limited
Rating: 5 out of 5
Conversion Specialist in Castelnau
We pride ourselves in being a passion driven builders, always striving for the best possible results. We approach projects in a pro-active way, carefully listening to our clients and responding in a practical, reasonable and cost-effective way. We have various qualifications and vast experience in residential construction, but because we work in a changing industry, we are constantly expanding our knowledge just to be able to come up with better ideas. We are also on Checkatrade.
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Latest review:
Great builders! Nice team, very helpful and respectful. Maciek has been a great communicator and he helped us to plan everything, so the work could be done while we were away. We were pleased with the builders, they were very polite and hardworking.

4.9

Top rated Conversion Specialists

Our 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 conversion specialists in Castelnau?

Conversion specialists are the people you need to make underused areas of your home practical and fit for purpose.

If you need to increase your living space and improve its functionality, a conversion specialist can help with:

Loft conversions: Turning attics into bedrooms, offices, or storage spaces.
Garage conversions: Transforming garages into living areas, studios, or utility rooms.
Basement conversions: Creating usable living spaces in previously underutilised basements.
Barn and outbuilding conversions: Updating detached buildings for modern use, such as guest accommodation or home offices.
Internal reconfigurations: Knocking through walls, creating open-plan layouts, or combining rooms.
Commercial-to-residential conversions: Adapting offices or shops into homes.

No matter the tasks of your conversion project, MyBuilder makes it easy to find local conversion specialists near you. Simply post your job and receive responses from conversion professionals in Castelnau who are available to take on your project.

Costs of conversions in Castelnau

Conversion costs in Castelnau vary widely depending on the type of work, the size of the space, and the materials involved.

As a rough guide, here’s what you can expect to pay for different conversion tasks:

Loft conversions costs: £40,000–£65,000+
Garage conversion costs: £15,000–£25,000
Basement conversion costs: £60,000–£120,000+
Barn and outbuilding conversions: £30,000–£80,000+
Internal reconfigurations: £5,000–£20,000
Commercial-to-residential conversions: £50,000–£150,000+
Hourly labour rate: £20–£35 per hour
Daily labour rate: £160–£280 per day
Demolition and removal costs: £500–£5,000+

Note: Material costs can vary widely depending on the type of conversion and the finishes you choose. For example, structural steel, roofing, and high-spec windows can increase costs significantly, while insulation or interior finishes may be more moderate. Discuss this ahead of time with any potential conversion specialists to ensure you get the right quote.

If you’re seriously considering a conversion for your home, Castelnau conversion specialists will be the best source of accurate pricing information. Find your preferred conversion specialists near you to ask for a quote tailored to your project specifics.

Find a conversions specialist in Castelnau with MyBuilder

Converting part of your home is a big investment, so finding the right tradesperson is key to ensuring a smooth and successful project. MyBuilder connects you with verified conversion specialists in Castelnau, giving you control over who you hire and how you manage your project.

Step 1: Post your job on MyBuilder for free

Start by describing the type of conversion you need on our platform. Give as much detail as you can! You can also include images to give tradespeople a better idea of the work you would like completing. Once posted, your job is shared with conversion specialists in Castelnau.

Step 2: Review and contact Castelnau conversion specialists

You can browse company profiles to find the right Castelnau conversion specialist for you, check out previous work, and read genuine customer feedback. Once you’ve decided on some potential conversion specialists, you can reach out to discuss the project details further and request detailed, itemised quotes that outline labour, materials, and timelines, helping you compare options clearly before making a decision.

Step 3: Make your final choice

Now that you’ve gathered the information and received detailed quotes from Castelnau conversion specialists, you can easily make your final choice in just a few clicks.

By comparing prices, timelines, and approaches, you stay fully in control of who you hire and how your conversion is carried out. Once you’ve selected the right tradesperson for your project, you can arrange a suitable date and time, and get your conversion underway!

MyBuilder verifies each tradesperson when they join by checking ID, company registration, and relevant qualifications for regulated industries. Post your conversion job on MyBuilder today and start receiving responses from interested conversion specialists in Castelnau.

FAQs: Questions about Castelnau conversions

How do I find available conversion specialists in Castelnau?

You can find local conversion specialists through platforms like MyBuilder, where you can compare profiles, reviews, and quotes to help you choose the right professional for your project.

How long does a typical home conversion take?

Most home conversions take between 4 and 12 weeks, depending on the size, complexity, and type of project. Larger structural changes or regulatory approvals can take longer.

Are conversion specialists required to have insurance in Castelnau?

Yes, reputable conversion specialists typically hold public liability insurance to cover potential damage or accidents during the project. Some may also carry employer’s liability or professional indemnity insurance, depending on the work.

Do conversion specialists in Castelnau offer warranties or guarantees on their work?

Many conversion specialists offer warranties or guarantees for workmanship and structural integrity, though the terms and duration vary by company. Always confirm what’s included before hiring.

Can a conversion specialist in Castelnau help with planning permission and building regulations?

Yes, many conversion specialists can advise on planning permissions, submit applications, and ensure your project complies with building regulations, although some homeowners choose to handle these steps themselves.

How far in advance should I book a Castelnau conversion specialist?

It’s best to book at least 2–4 months in advance, especially during busy periods like spring and summer. Specialist conversions may require even longer lead times.

Can conversion specialists handle design as well as construction, or will I need an architect too?

Some conversion specialists offer design-and-build services, managing both stages of the project. For more complex conversions or structural changes, you may still need to involve an architect or structural engineer.