Do You want to convert a property into flats?

Many people steer away from carrying out projects like this as they do not know where to start, especially with all the planning permission considerations and building regulations surrounding them.

We work closely with architects to ensure that all flat conversions can be explored within your property. Some people potentially double or even triple your rental income, relatively easily and mostly stress-free.

Raynes Construction have a wealth of experience working with clients and we also carry out our own projects ourselves. Our team has a wide knowledge behind them, our South London-based, Flat Conversion architects can guide you through the red tape and help you to maximize your return on investment by utilising the space you have.

By developing your technical drawings based on minimum space requirements in building regulations and liaising with London borough councils on your behalf, Raynes Construction will ensure that all our projects meet all the rental requirements.

Recent Projects

Hanway Street Flat conversion Case Study

In 2019 we were commissioned to convert a building on Hanway Street, Fitzrovia into three flats. The building had not been updated for 50 years and we had to gut the whole property. The floors were uneven, the electric and gas plumbing had to be stripped out as they were hazardous . The project took longer than expected as COVID-19 restrictions came into play in early 2020 and meant that work stopped for a few months but we still managed to complete the project in less than 8 months and still under budget.

“We are so happy with Jon and Charlie from Raynes Construction, they helped immensely during these unprecedented times, they had excellent communication and needless to say went more than the extra mile. We were so pleased we are giving them another unit to complete!”

Sundip Patel – Hanway Street Client testimonial

Get In Touch

Raynes Construction can provide the best service within your budget. Don’t hesitate to contact us today on 020 34755889 or email us on for more information.

Since 2013 Lofts, Extensions, Refurbishments

We have built its reputation on the values of professionalism, innovation, technical expertise, quality, and health and safety.

Need Help With Your Flat Conversion?

Raynes Construction has years of experience bringing flat conversion ideas into fruition. Everyone wants to ensure that their space is used well, so you can get the best rental or sale price depending on your strategy.

We can help you with existing designs or our creative team can hand hold you through the process using our proven techniques to give your property the best opportunity for a successful planning application.

Our previous work speaks for itself, we are happy to show you previous project floor plans/proposals to tours of our projects. This way you can see how we transform a property into a flat conversion.

Contact us today for one of our team to help you and give you more information on your exciting journey to converting your property into flats. Call Now on 020 3475 5889


Google Reviews

What Our Customers Says

John was very helpful and responsive. He also recommended other helpful contractors
James Maclachlan
James Maclachlan
I had the pleasure to discuss the works needed for a full refurb with John. He was very prepared, technical and knowledgable. Despite not being able to work together due to my location (too far from where RPC operates), John still kindly offered to give me a very accurate quote of the costs. This tells you a lot about how much RPC cares about their clients, but most importantly people. I’d definitely recommend RPC!
Jack Digital
Jack Digital
Raynes Park Construction did some work to help sort out some damp issues in my Edwardian house which involved putting in a new concrete foundation. Jon project managed the work and was available and responsive throughout to help resolve any issues. The company definitely make the effort to provide good service and value having a good relationship with their clients. I would use them again for other work!
Alastair Salmon
Alastair Salmon
Jon, Charlie, and the Raynes Park Construction team did a fantastic job completely refurbishing our one-bed ground floor flat in Raynes Park. The job involved completely stripping everything back to the bare brickwork, re-plastering the walls, new flooring throughout, new kitchen and bathroom. Finished product was like a high-end new built flat. The build was in 2018, and it still looks like new. We liked Jon and Charlie, from the start, and struck up a good relationship. What we particularly appreciated was the clear communication and pragmatic advice. My mother now lives in there, and is very pleased with it all - no greater accolade than that!
Churchill Andrew
Churchill Andrew
Great team, gave me lots of inspiration about what could be achieved, and then it was carried out even better. Never felt talked down to, and very tidy work. Highly recommended.
Claire Soulal
Claire Soulal
We are generally happy with Jon and his team for the our kitchen work. They are very responsive in communication and update of the project progress. When there were problems encountered even after the project completion, the team was eager to sort it out asap, they value highly on customer satisfaction.
Shin Ru Lai
Shin Ru Lai
Jon, Charlie and their team built our loft extension during 2022, and we couldn’t be happier with the service they provided. They were incredibly helpful during the planning of the project, kept everything within budget and even helped source some of my wilder ideas such as a giant custom built window. I was very pleased with the efficient service we received and having now seen the quality of the work, we will be looking to have them back to complete a rear extension in the near future.
Aarti shah
Aarti shah
I have recently engaged with Raynes Park construction and found them to be professional, communicative and engaging.They offered fantastic advice and came across very knowledgeable. I look forward to collaborating on my next project. Michael
Michael Rowland
Michael Rowland
We had a very positive experience with Jon and Charlie who were professional, quick to respond and provided a comprehensive and competitive quote. We had a hard time deciding and we went with a different firm in the end - but we enjoyed all of our interactions and appreciated the honest and straight forward approach.
Alasdair Wood
Alasdair Wood
Raynes Park Construction completed a rear extension at our Wimbledon house in 2021. Jon, Charlie and the team were very professional, worked exceptionally fast and delivered on all levels. We have been impressed with their response times and after care and wouldn't hesitate in recommending them. They were at all times honest and clear which made working with them very easy. They were very flexible when providing us with a quote for the work and it was great to work with such a local business. We are very happy with our new kitchen and dining space!
Elgan Williams
Elgan Williams
  • Flat Conversions
  • Loft Conversions
  • Extensions
  • Renovations & Refurbishments
  • Architectural Services

Have any questions? – Contact Us Now

To learn more on how Raynes Construction can help you achieve your vision for the property, or for a no obligation free quotation, contact us today at 02034755889 or email us at


Whilst we didn’t proceed with our project due to external factors- we found Raynes Construction great to deal with. Charlie was very knowledgeable , personable and pulled together a very impressive quote with good detail. Wouldn’t hesitate to contact again.

Tom Moz, London
All works were completed to a very high standard, within budget and on time. We are very pleased with the end result and would be very happy to recommend Raynes Construction.
Kerry Champkin, London
I found Raynes Construction to be conscientious diligent builders who stand out from the rest, they completed my loft extension within a 5 week time frame from start to finish, would use again & fully recommend them!
Jason Raul, London
RPC worked brilliantly for us. They came in and re-laid the beams in the floor of our loft conversion after the original builders hadn’t done the job correctly. They were timely, courteous and very tidy, also providing a good value for money quote. I’d recommend using them for any type of building project and we would definitely use them again.
Briony Colburn, London
They did a great work with my house. I wanted to some reconstruction and called this company. Their professionals exceeded my expectations. The house looks great!
Callum Wilkins, London
Great company with great service!!!! Highly recommend and LOCAL!!!!!
Albi Kurti, London

Request A Free Quote