Create space without moving. We sort permissions, run every trade in-house, and guarantee the finish.
15+ Years Experience
Get in Touch Today & Start Transforming Your Property!
Consultation & Survey
Free consultation and survey, with advice on planning, permitted development routes.
Your Guarantee
10-year boiler and roofing guarantees, plus six months of aftercare on each project.
Turnkey Management
All trades in-house with one project manager, clear schedules and tidy, daily sites.
About Us
Established in 2022 and based in Staines. Harpers Home Developments Ltd delivers home extensions and conversions across Surrey and Middlesex.
Our Services
We help shape your ideas into practical, compliant designs. From advising on Permitted Development to submitting planning applications, we handle the paperwork so you can focus on the result.
Design & Planning Support
Turn ideas into buildable plans. We advise on Permitted Development, prepare drawings, submit planning and Building Control, and coordinate structural design before you build with confidence.
Single & Double Storey Extensions
Add bright kitchens, dining rooms or extra bedrooms that blend seamlessly with your home. We plan structure, manage trades, oversee services and deliver a compliant, high-quality finish on time.
Wrap-around Extensions
Maximise ground floor space with a side and rear addition. We design for light and flow, install steelwork, reroute services, fit glazing and utilities, and hand over a compliant, high-quality finish on time.
Modern Loft Conversions
Create a new floor for sleeping or working. We design stairs and fire protection, add dormers where needed, insulate and deliver a compliant Building Control handover.
Open-plan Reconfigurations
Open your home for modern living. We remove walls, calculate loads, install RSJ steels, move electrics and plumbing, and finish with plastering, flooring, joinery and decoration.
New Garage Conversions
Turn an underused garage into a warm room that feels original. We insulate and raise floors, upgrade windows and fire separation, and link to the house.
New boiler and roofing installations are backed by a 10-year guarantee, and all projects include 6 months of aftercare to resolve any issues after handover.
With all trades run in-house and a single project manager, we keep programmes tight and eliminate subcontractor mark-ups or hidden costs.
We handle Planning Permission, Building Regulations and inspections, ensuring your project meets every legal and safety standard.
Our entire team holds CSCS cards, guaranteeing the highest standards of site safety and workmanship.
Three generations of construction expertise, backed by 5-star reviews from homeowners across Surrey and Middlesex.
Your Questions Answered
We plan and build extensions and conversions that clients recommend to neighbours. Below are straight answers to the questions we hear most and the easiest way to get started.
Get in Touch Today & Start Transforming Your Property!
Frequently Asked Questions
New boiler and roofing installations carry a 10-year guarantee, and every project includes six months of aftercare support.
Often not. Many projects fall under Permitted Development if they meet the limits. We check this at survey and advise whether to seek a Lawful Development Certificate.
It depends on size and spec. After permissions, most extensions and conversions are scheduled, built and handed over within an agreed programme that we share up front.
Usually yes for ground floor extensions and many conversions. We plan phases, protect walkways, control dust and keep daily tidy so family life can continue.
We prepare drawings, notify Building Control and book inspections at each stage. Compliance is included in our delivery.
Our Recent Projects
Explore real examples of our expertise across Property Renovations, Extensions & Conversions, Specialist Trades, Demolition & Groundwork and Landscaping Projects. Every image showcases the quality craftsmanship and meticulous care that define Harpers Home Developments Ltd.
Completed in West Byfleet, a ground floor structural renovation combined with a loft conversion, delivered three weeks ahead of schedule. Another on-time, on-budget project with very happy clients.
A side garage removal and new side extension in Woking, creating an open-plan rear living room, ground floor bathroom, utility and storage room. The project also included extending the patio, silicone rendering the exterior, and delivering a clean, modern finish.
A side infill extension to a mid-terrace home in Isleworth, removing rear structural walls and installing large steel beams to create an open-plan kitchen diner. Features include a bespoke kitchen, Crittall-style doors, and a pitched roof with a large glass rooflight.
A recently completed single-storey rear extension in Hersham, creating a spacious lounge with two sets of anthracite grey bi-fold doors, Velux roof windows, bespoke triangular glass panels, and a white K-rend exterior to match the home, delivered on time and within budget.
Let’s Build Something Exceptional
From single and double storey extensions to garage, loft and open-plan conversions, we design and build high-quality spaces that transform your home, all backed by 10-year guarantees and six months’ aftercare.
