Design & Build, House Extensions & Loft Conversions in Surrey & Elmbridge

Explore our complete range of services for homeowners across Elmbridge and the London–Surrey border—delivered with clear guidance, quality workmanship, and one accountable team.

From structural calculations to inspection sign-off, we help you meet Building Regulations for extensions, loft conversions and refurbishments—keeping your project compliant from day one.

HWP Design & Build deliver tailored design and build services across London and Surrey, from planning to quality construction—helping you create the ideal home for your family.

Create more space and add value with a beautifully built extension—rear, side return, wrap-around, single or double storey—planned and delivered by one trusted team.

Turn unused roof space into a bright new bedroom, office or suite—designed for your home and built to last, with dormer, mansard, hip-to-gable or Velux options.

Reduce delays and neighbour disputes with clear party wall guidance—helping you understand notices, next steps, and what’s needed before work begins.

We guide you through planning with straightforward advice, strong drawings, and council-ready submissions—so you can move forward with confidence.

Keep your build on track with proactive planning, clear timelines and quality control—coordinating every trade and detail for a smoother experience at home.

Modernise and improve your home with a careful, considered refurbishment—layout changes, structural works, finishes and fit-out—managed by one reliable team.