Surrey’s trusted loft and extension specialists

Newly built double story extension completed in Surrey

We help you achieve more space and increase the value of your home.

Who we are

At Seven Hills Developments, we are a trusted building company based in Cobham, Surrey, specialising in high-quality property development, home renovations, loft conversions, home extensions and new builds. With years of experience and a passion for craftsmanship, we turn ideas into exceptional living spaces.

Whether you’re planning a full-scale home extension, a bespoke kitchen renovation, or a complete property transformation, our expert team delivers tailored solutions with precision and care. As one of the leading construction companies in Surrey, we take pride in our reputation for reliability, transparency, and outstanding results.

Close-up of new loft conversion with dark gray roof tiles, two white-framed windows, a black gutter system along the roof edge, and a satellite dish on the side.

Loft conversion

Seven hills developments have completed a loft conversion for us and we couldn’t be happier, from our initial meeting they put all our concerns to rest. The team and all trades were extremely friendly with a wide range of knowledge to answer and questions we had along the way.

Samantha & John

Epsom

Testimonals

Side and Rear extension

We are over the moon with our new extension, it has completely changed our house by adding on the extra space. Andy and his team were fantastic throughout the whole project, we would definitely recommend them and have already spoken to them about doing more work to our house.

Jane & Andrew

Claygate

Kitchen Extension

We were recommended seven hills developments through a friend and they didn’t dissapoint, they completed the work efficiently and to a very high standard.

Simon

Cobham

Get in Touch!

Schedule an appointment for our initial consultation

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FAQ

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  • First things first, don't be nervous. We'll start with a free consultation to determine your design needs or if you have plans in place to run through all the details with you to get an accurate price.

  • We mainly cover Surrey, Hampshire and parts of south London

  • We work closely with a few architectural companies, so we can supply a full package from concept to completion.