Garage conversion types and options
Turn an underused garage into a room that works for your home. JB Garage Conversions is based in Harlow and carries out partial, single and double conversions across our service area. Whether you need a home office, another bedroom or family space, start with the layout, storage and finish you want to achieve.
From £11,000
Partial Conversion
From £14,000
Full Single Garage
From £20,000+
Double Garage
Customer Reviews
Types of Garage Conversion We Offer
Start with the space you need and the storage you want to keep. These options help you compare a partial conversion with using the whole single or double garage.
Still deciding whether to use the garage or build more space? Our garage conversion or extension comparison considers room position, storage, garden space and disruption as well as cost.
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Partial Garage Conversion
Create a separate room and retain storage. We plan the split around your needs. Starting guide: £11,000.
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Single Garage Conversion
Use the full single garage for a new room, with layout and finish agreed after a site visit. Starting guide: £14,000.
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Double Garage Conversion
Explore one larger space or separate rooms, subject to the building and specification. Starting guide: £20,000+.
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Garage to Bedroom
Add a bedroom, guest room or teenage retreat without a full extension.
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Garage to Home Office
A dedicated, insulated workspace away from the main house.
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Garage to Annexe
Explore additional living facilities, with access, services and the planning position checked for the intended use.
Scope to Agree in Your Quotation
Your garage needs a project-specific specification. The site visit helps identify the work required; the written quotation should distinguish included work, allowances, exclusions and optional items. Our guide on how to choose a garage conversion builder explains the evidence and questions to compare.
Get a Free Quote- Survey findings and agreed room layout
- Structural work and opening details, where required
- Damp protection and the floor construction
- Wall and roof insulation, with the ventilation strategy
- Windows, doors and any retained garage separation
- Electrical, heating and plumbing work specified for the room
- Plastering, joinery and agreed finishes
- Flooring and decoration inclusions or exclusions
- Application responsibilities, inspection stages and fees
- Completion documents and handover arrangements
Planning Permission & Building Regulations
Planning Permission
Planning permission is not usually needed for internal garage-conversion work that does not enlarge the building, but property-specific restrictions can change that. Check existing planning conditions, limits on permitted development and listed-building requirements. A proposal for a separate dwelling needs particular advice from the local planning authority.
Full planning permission guideBuilding Regulations
Converting a garage, including only part of it, into living accommodation normally requires building-regulations approval. This is separate from planning permission. Before work starts, agree the approval route, who makes the application, the inspection stages and who pays the fees. Any application support provided by JB is set out in the quotation; required approval is not an optional upgrade.
Full building regulations guideGarage Conversion Costs in Essex
Our starting guides are £11,000 for a partial conversion, £14,000 for a full single conversion and £20,000+ for a double conversion. These are not quotations for a particular garage. Structure, access, layout, drainage, services and the agreed finish determine the project price.
Partial Conversion
From £11,000
Convert part of the garage into a usable room while retaining a storage or parking area.
Full Single Garage
From £14,000
Insulation, plastering, electrics, flooring and decoration. Full room conversion.
Double Garage
From £20,000+
One larger space or separate rooms. Layout, structure, services and finishes are specified for your garage.
Garage Annexe
Quoted to specification
Ancillary living space with bedroom, bathroom and kitchenette facilities, subject to the intended use, services and approvals.
Real Garage Conversion Projects
Every photo in our gallery is a real project completed by JB Garage Conversions — not stock images. See before, during and after photos from Huxley Close, South Woodford and Chelmsford.
Huxley Close
Bare shell garage converted into a bright Velux playroom with herringbone LVT flooring and bifold doors.
South Woodford
Structural steelwork and a kitchen-diner extension, shown in the project gallery.
Chelmsford
Detached double garage converted into ancillary rooms including a lounge, kitchenette, bedroom and shower room.
Looking for more detail on our approach? Read about our specialist garage conversion builder service, including the full process from site visit to sign-off.
Garage Conversion FAQs
Get a Free Garage Conversion Quote
We work within approximately one hour of Harlow, with Cambridge as an agreed exception. Billericay is outside our service area. Share your postcode so we can confirm coverage and discuss next steps.
Check the requirements for your property
General guidance is a starting point, not approval for a particular garage. Read the Planning Portal guidance on garage conversion planning permission and building regulations, then confirm the requirements with the relevant local planning authority and building control body.