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About us

  • 30 years experience
  • 10-year structural guarantee
  • Fixed fee quotation
  • 5% Scheduling discount
  • 500+ Successful projects
HWP Design & Build working on a residential design and build project in Elmbridge
HWP Design & Build logo
SINCE
2024
MISSION AND VISION

Local design & build specialists for Surrey & SW London homes.

HWP Design & Build is based in East Molesey (KT8), delivering high-quality home improvements across Elmbridge, Surrey and SW London. Although the company was incorporated in 2024, our team brings 30+ years of hands-on experience planning, managing and building residential projects.

Our mission is simple: make improving your home feel clear and controlled. We do that through a structured approach, fixed-price clarity where possible, and one accountable team guiding you through planning, construction and sign-off.

  • One team, one point of contact - fewer handovers, clearer communication.
  • Fixed-price clarity - detailed scope and specification to protect your budget.
  • Full-scope capability - extensions, loft conversions and refurbishments.
  • Future-proof thinking - sensible material choices and practical energy/comfort upgrades.

00+

Years Design
& Build Experience

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Years Structural
Guarantee

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Scheduling Discount
With Fixed Fee Quotation

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Successful Projects
Delivered

Who we are

We're a local design & build team focused on helping homeowners extend, upgrade and future-proof their homes across Surrey and SW London. From early feasibility through to handover and aftercare, we keep the process organised, transparent and well managed.

Why work with HWP Design & Build

  • Clear scope and budgeting - detailed quotations and sensible allowances to reduce surprises.
  • Local knowledge - experience with typical KT/SW homes, access constraints and council expectations.
  • End-to-end delivery - design coordination, build, inspections and sign-off in one managed journey.
  • Accountable project management - structured updates, tidy sites, and respect for your home.

How we help increase property value

  • Better layouts - improving flow, light and usability (kitchens, living space, bedrooms and bathrooms).
  • Quality structural work - built to current standards and coordinated with Building Regulations.
  • Energy and comfort upgrades - insulation, ventilation and practical efficiency improvements.
  • Finish and detail - clean lines, durable materials and a consistent, high-quality final result.

Why people like working with us

  • Straight answers - clear advice on options, risks and realistic timescales.
  • Reliable communication - regular updates and quick responses when decisions are needed.
  • Considerate working practices - minimising disruption and keeping your home secure.
  • Problem solving - practical solutions when site conditions change or details evolve.

What you can expect from us

  • Site visit and honest guidance - talk through feasibility, budget ranges and next steps.
  • Support with approvals - guidance through planning permission and pre-build requirements.
  • Managed build phase - programming, trades coordination and quality control.
  • Professional handover - snagging, sign-off support and ongoing aftercare.
What We Do

Home improvements delivered with design & build clarity

We deliver residential projects across Surrey and SW London, including house extensions, loft conversions and renovations & refurbishments. Explore our services below or see examples in our project gallery.

Design
& Build

One accountable team from concept and approvals to the finished build.

House
Extensions

Add space, light and value with a carefully planned extension.

Single Storey
Extensions

Practical ground-floor space with great light and flow.

Double Storey
Extensions

Expand living areas and bedrooms together in one build.

Rear
Extensions

Open up the back of your home and connect to the garden.

Side Return
Extensions

Maximise width in period homes with a bright, practical layout.

Wrap-Around
Extensions

A major ground-floor transformation combining side + rear.

Kitchen
Extensions

Create a brighter, more social kitchen-diner built for real life.

Garage
Conversions

Turn unused space into a warm home office, room or utility area.

Loft
Conversions

Add a new bedroom, office or suite without extending the garden.

Dormer Loft
Conversions

Increase headroom and floor area for a truly usable loft space.

Hip-to-Gable
Conversions

Perfect for hipped roofs—gain width and improve loft layouts.

Mansard Loft
Conversions

Maximise volume with a premium conversion suited to period homes.

Velux / Rooflight
Conversions

A lighter-touch loft conversion that keeps the roofline simple.

Renovations &
Refurbishments

Reconfigure, modernise and upgrade finishes with a clear plan.

Planning
Permission

Feasibility, drawings and council submissions handled end-to-end.

Building
Regulations

Compliant detailing, inspections and a smooth route to sign-off.

Party Wall
Support

Practical guidance to keep neighbour relationships and timelines intact.

Project
Management

Clear programmes, quality control and homeowner-first communication.

Ready to Start Your Project?

Request a Quote

FAQ's, who we are and what we do

We're based in East Molesey (KT8) and typically cover a 20-mile radius across Elmbridge, Surrey and SW London. See our local coverage here: Elmbridge builders & area info.

Our team brings 30+ years of hands-on experience delivering extensions, loft conversions and refurbishments across the London/Surrey border. You can view recent examples here: projects.

Our design & build service brings design coordination and construction together under one team-helping you move from concept to completion with clearer communication and fewer handovers. Learn more here: design & build.

Yes-where possible we provide a clear, fixed-price quotation with an agreed scope and specification, so you can plan your budget with confidence. Start here: get a quote.

Yes. We hold appropriate insurance and can provide the relevant documentation for your peace of mind. Details are here: accreditations, insurance & guarantees.

We aim to increase our use of sustainable materials and methods where suitable, and we consider comfort and long-term performance as part of the build approach. For compliance and performance standards, see: building regulations.