If you are short on space, a conversion is often the neatest way to unlock it without a full extension. We specialise in Property Conversions in Surrey, with a focus on loft conversions plus garage, dormer and barn projects. tructure is cared for as much as style, so your new room looks right and performs well.
Conversion Survey
We check structure, head height, access and services, then outline safe options that fit your home.
Phased Working Plan
Weekly updates keep decisions simple and your home running during the build.
Quality Handover
Clean finish, manuals and certificates provided, with Building Control sign-off arranged.
Turn unused roof space into a warm, comfortable room with proper stairs and daylight.
Add headroom and straight walls for practical bedrooms, offices or ensuites.
Create a cost-effective extra room with minimal external change.
Maximise usable space while keeping the streetscape in mind.
Repurpose existing footprint for a snug, office or playroom that blends with your home.
Retain character while upgrading structure, insulation and airtightness to modern standards.







07798 622 171
Before you commit, we explain what is required for your property type and area.
Many loft and garage conversions fall under permitted development, but roof form changes, dormers on front elevations, barn conversions and conservation settings often need full planning. We prepare drawings and handle submissions, working with the local authority for Surrey homes.
We coordinate with Building Control on structure, fire safety, stairs, insulation, ventilation and electrics, with NICEIC and Gas Safe trades where required. Expect neat paperwork and a smooth inspection path.
We provide itemised, transparent estimates with options for finishes, glazing and storage. You can phase works to match your priorities.
From clean dormer lines and inset balconies to eaves storage and acoustic upgrades, we share ideas that lift daily living without waste.
Many loft conversions can be permitted development. Dormers facing the highway, mansards, hip-to-gable changes and barn conversions often need full planning. We review your home and advise the simplest route, then handle drawings and submissions. See our Home Extensions page for more on approvals.
It depends on roof shape, ridge height and street context. Dormers add headroom, hip-to-gable works on hipped roofs, mansards suit terrace settings with bigger space gains. We survey, model options and price each route. If your roof needs detailing, our Roofing and Roof Repair team supports the tie-in.
Costs vary with structure changes, stairs, glazing and insulation requirements. We provide clear conversion cost estimates with options, so you can prioritise what matters.
Expect checks on structure, fire escape (Part B), stairs (Part K), insulation and energy (Part L), ventilation (Part F) and electrics (Part P). We coordinate with Building Control and provide all required documentation.
Yes, we deliver Property Conversions in Surrey, from initial survey to final finishes. If you are nearby, ask about our Locations hubs and we will confirm coverage for your home.
Harpers Property Conversions
Based in Staines-upon-Thames | Serving Surrey & Middlesex
We plan, build and hand over loft, dormer, garage and barn conversions with tidy sites, weekly updates and one organised in-house team. From permissions to finishes, you get practical advice and a result that works.
Make your Property Conversion in Surrey simple, predictable and well finished. Click for a quick quote or send your drawings for a free pre-visit.
Harpers | Free Guide For Homeowners
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