Double Garage Conversions in South Wales
A double garage gives you roughly 30–35 m² of floor space — enough for a generous open-plan living-dining area, a bedroom + en-suite + kitchenette annexe, or two separate rooms. We handle the full conversion including insulation, internal walls, electrics, plumbing, heating and replacement of the up-and-over doors. Most double garage conversions complete in 3–4 weeks and rarely need planning permission.
Benefits
- Generous 30–35 m² of Space: Enough for a large open-plan room, two separate rooms or a self-contained annexe.
- Flexible Layouts: Open-plan, partition into two rooms, or knock through into the main house — your call.
- Bigger ROI Than Single Garage: Double garages deliver more usable space per pound spent than single conversions.
- No Planning Usually Needed: Almost all double garage conversions fall under permitted development.
- Full Building Regs: Insulation, fire safety, structural and electrical sign-off included as standard.
- Quick Turnaround: Most double garage conversions completed in 3–4 weeks.
Our double garage conversions range
- Open-Plan Double Garage Conversion: One large family room, games room or home cinema using the full footprint.
- Two-Room Double Garage: Partition into bedroom + office, or lounge + utility, with separate access.
- Double Garage Annexe: Bedroom, en-suite, lounge and kitchenette — a proper self-contained granny annexe.
- Double Garage Gym + Office: Half home gym, half home office — increasingly popular hybrid spec.
Frequently Asked Questions
Do I need planning permission for a double garage conversion?
Usually no — internal conversions are normally permitted development. We confirm planning status before quoting.
How long does a double garage conversion take?
Most double garage conversions are completed in 3–4 weeks, slightly longer if creating two separate rooms or adding an en-suite.
How much does a double garage conversion cost?
Typically £15,000 to £28,000 depending on layout, plumbing and finish. We provide fixed written quotes after a free survey.
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