Transform Your Home with
Expert Loft Conversions
Rated 10/10 on Checkatrade from 190 trusted homeowner reviews
Trusted builders in Carshalton, Surrey, delivering high-quality building and renovation services with expert craftsmanship, attention to detail, and fair, honest pricing you can rely on.
Maximise Your Living Space
Transform your home with BuildOn Construction’s expert loft conversions. Our team specialises in creating functional, stylish spaces that add both comfort and value to your property. From planning to completion, we handle every step with precision, ensuring your loft conversion meets your needs and exceeds expectations.
Loft conversions – The benefits
Loft conversions are a smart way to maximise your home’s space and value. At BuildOn Construction, we deliver high-quality conversions that blend functionality with style, creating versatile living areas tailored to your needs.
- Transform unused loft areas into bedrooms, offices, or playrooms.
- Add significant market value to your home with a well-designed loft conversion.
- Improve natural light, insulation, and overall functionality of your home.

Trusted By Clients
Like most good builders, the majority of our work is generated through word of mouth. This is important to us, because we believe it demonstrates consistent client satisfaction. But don’t just take our word for it, here’s what our customers think…
"Bobby and his team recently put wooden floor down in my sitting room, dining room, and hallway. The quality of the flooring and workmanship was top notch. They cleaned up at the end of each working day and kept disruption to a minimum. We also had extra electrical sockets fitted and they made good any plastering where needed. All in all I found Bobby and his team to be polite, cheerful, reliable and honest. His quote was very reasonable and I would not hesitate to recommend him to anyone."
Mrs Dorothea Francis
Interior Consultant
"I desperately need a new bathroom, but being 90, I was somewhat nervous about the disruption. My son-in-law recommended Bobby. It was a big relief to have such friendly and considerate people working in the house. What's more they did a fantastic job! I couldn't be happier."
Betty - Morden
Senior Homeowner
"Bobby and his team conve rted half our garage into an office. They have done an exceptional job and we are extremely pleased with the work done. They have great attention to detail and we would recommend them to family and friends. We will definitely use BuildOn again in the near future. They are extremely polite, happy and very nice people to have around and were tidy after each day. Thanks guys !!!"
Miss Laura Hopkins
Project Coordinator
"Extension with total kitchen rebuild and fitting, tiling and much more, input of design and decorating too. 100% happy. Fitted in with the family. Certainly would use and refer."
Amanda and Richard Newton
Home Renovators
"Bobby and the lads did a fantastic job on our rear and 1st floor side extension. Workmanship and finish were of the highest quality.I would recommend Buildon without hesitation."
Alan - Sutton
Quality Reviewer
"They were amazing and really tidy. They were fantastic and a top find."
Geremy and Kate
Property Experts
"Good Quality and excellent service!"
Mr Martin Brown
Construction Reviewer
"I wanted a garden studio that is ok to work in all year round. Now I've got a lovely custom built space, thanks to Buildon."
Judith - Carshalton
Design Enthusiast
"Good Quality and excellent service!"











