BuildOn Construction Ltd

A team of experienced builders based in Carshalton, Surrey and the surrounding areas, specialising in loft conversions.

More than just Builders

Here at Buildon we offer the complete package. We take on whole projects from start to finish, delivering a quality and professional service throughout. From home extensions to loft conversions, alterations and renovations. We pride ourselves in producing work of the highest quality, leaving all jobs finished to the best possible standard. We’ll handle all aspects, from plans and design through to final construction. All of the work we carry out complies with the latest building regulations. This isn’t a service all builders provide, but we do, because it helps ensure your project runs smoothly from start to finish. We aim to make your vision a reality. We also take on smaller jobs including kitchens and bathrooms patios, garden studios and bespoke carpentry .
Loft conversion interior

Loft Conversions

We specialise in loft conversions, which are a great way of adding extra living space.

Rear and side extension, Carshalton builders.


We also specialise in building high quality rear and side extensions.

As well as specialising in loft conversions and extensions, we offer a range of additional building services. 

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…