Design and build · Surrey
Garage conversions in Leatherhead, designed and built by one team from our base in New Haw, about 8 miles away.
FMB membersSee our reviews on GoogleRead our garage conversion cost guide
3 to 5 weeks
on site for a single garage conversion
District Council decides planning
Conservation areas
Leatherhead and Fetcham
8 miles
from our base in New Haw
Building in Leatherhead
In Leatherhead and Fetcham, converting an integral or attached garage can give a house a home office, a playroom, a utility room or an extra bedroom. Mole Valley's Design Guidance for House Extensions SPD (2025) lists garages and outbuildings among its topics, alongside the Leatherhead and Bookham & Fetcham Design Codes. Expect 3 to 5 weeks on site for a single garage and 5 to 8 weeks for a double or structural conversion.
Whether a conversion needs planning permission depends on the house. Converting the inside and building a matching front wall can often be done without a planning application, but a condition from the original planning permission can remove that right or require the garage to stay available for parking. In parts of the Leatherhead conservation area, Article 4 controls protect street features, so a change to a street-facing garage front there is checked against the direction. Close to the River Mole the new floor level needs particular thought, as does the high water table where chalk meets clay. Building regulations approval covers the whole conversion, and the planning route is confirmed for the house before design.
What we build
A quiet, properly insulated workspace away from the household, wired for power, data and good lighting.
A dedicated space for training at home, with hard-wearing flooring, ventilation and mirrors.
A snug, blacked-out media room with the wiring, acoustics and lighting planned in from the start.
A safe, warm room to keep toys and mess out of the main living space, and easy to repurpose later.
A bedroom, shower room and kitchenette for guests, family or independent living.
Laundry, storage and services moved out of the kitchen to free up your main living areas.
Our nearest finished garage conversion
Epsom, Surrey · about 4 miles from Leatherhead
Integrating the existing, lower-level garage slab with the main house floor level while ensuring maximum ceiling height for the new living space.
We engineered a stepped foundation and structural raised floor that perfectly matched the home's interior levels, creating an invisible, flush threshold between the original and new spaces.
View this projectGarage conversion FAQs
Straight answers on garage conversions in Leatherhead.
It often is, provided the work stays inside the garage and the infilled front matches the house. The house's planning history is checked first, because a condition can remove Permitted Development rights, and Article 4 controls apply in parts of the Leatherhead conservation area. Building regulations approval is needed in any case.
Free Cost Proposal
Tell us about the project. We'll arrange a free site visit, then send a clear, itemised Cost Proposal.
“Very helpful, proactive and competitive design/build quote. The initial video consultation was very useful, and Conor was very proactive in following up on my questions. The detailed cost breakdown was very helpful in understanding where I could perhaps reduce costs. If you are looking for a design and build company to discuss your project, I have no hesitation in recommending Conor and the Grand Innovations team.”
