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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.
SG

Director / Manager

Mrs Sophia Ghosh

Director and Manager of HWP Design & Build, supporting homeowners with clear communication, organised project enquiries and a trusted family-run approach.

Discuss Your Project Read Customer Reviews

Meet the Director

A Trust-Led, Family-Run Approach to Home Improvements

Mrs Sophia Ghosh is the Director and Manager of HWP Design & Build, a family-run building company working with homeowners across East Molesey, Elmbridge, Surrey, London and the surrounding areas.

Sophia’s role is centred on trust, organisation and clear communication. She helps ensure every enquiry is handled professionally from the first conversation, with homeowners given practical guidance, realistic expectations and a clear route towards a fully specified quotation. For clients planning a renovation, loft conversion, house extension or wider home improvement project, Sophia understands how important it is to feel informed before any major building decision is made.

At HWP Design & Build, the team brings over 30 years of industry experience, combining practical building knowledge with a structured, homeowner-focused process. Sophia supports that approach by helping clients move from initial contact to survey, specification and fixed-price quotation with clarity and confidence. Rather than offering vague estimates, HWP aims to provide detailed quotations tailored to each property, each client and the specific requirements of the proposed work.

As part of a family-run company, Sophia believes that good building work is about more than materials and workmanship. It is also about communication, respect for the home, careful planning and taking responsibility for the customer experience from start to finish. Whether HWP is discussing a loft conversion, home extension, internal renovation or full design-and-build project, her focus is on making the process feel approachable, transparent and well managed.

Sophia is also part of HWP’s commitment to delivering a more accountable building service. From the first enquiry, one of the company’s surveyors will contact the homeowner directly, discuss the proposed project and arrange an onsite meeting where required. This allows the team to understand the property properly before preparing a detailed specification and quotation.

Clear Quotations

Detailed specifications and fixed-price clarity tailored to your home and project.

Family-Run Service

A personal, organised approach from first enquiry through to site visit and quotation.

Local Experience

Supporting homeowners across East Molesey, Elmbridge, Surrey and South West London.

View Our Process Project Management info@hwpdesignandbuild.co.uk
Why homeowners choose HWP Design & Build

Clear pricing, one-team accountability and trusted local experience

We focus on the things that matter most to homeowners: transparent quotations, direct accountability, experienced delivery, strong local knowledge and a practical commitment to more sustainable building methods.

Fixed Price Quotations

Detailed fixed price quotations help give you clearer control over budget, specification and expectations from the outset. Get a quote.

No Subcontracting, One Team

Your contract stays with one company, giving you clearer communication, stronger accountability and a more joined-up design and build experience. Learn more about our design and build service.

30+ Years of Experience

With more than 30 years of industry experience, we bring practical knowledge to extensions, loft conversions, basements, refurbishments and structural home improvements. Read more about us.

Local KT8 / Elmbridge Focus

Based in East Molesey, we focus on KT8, Elmbridge and surrounding Surrey and South West London locations, giving homeowners a more local and relevant service. See our East Molesey area page.

Sustainability in Mind

We continuously strive to increase our use of sustainable materials and methods where practical, helping clients make more informed long-term choices for their homes. Find out more about our approach.

Looking for proof? View our reviews or request a fixed price quotation.

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.

Architectural
Design

Measured design, practical layouts and build-ready drawings for confident delivery.

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.

Internal
Refurbishments

Refresh layouts, finishes and everyday functionality throughout the home.

Basement Fitout
& Finishing

Turn below-ground space into comfortable, practical rooms ready for daily use.

Re-
Roofing

Replace ageing roof coverings and protect the property with dependable workmanship.

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.