What is a garage conversion?
A garage conversion turns an integral or attached garage into habitable space, such as a study, playroom, bedroom or utility. The garage door is replaced with a wall and window, the floor is raised and insulated, and the walls and roof are brought up to building regulations.
How much does a garage conversion cost in Esher?
In Esher, a garage conversion typically costs £20,000–£33,500 for a single integral garage, including VAT at 20% (standard rate). The guide for Esher reflects typical costs in the South East, roughly 12% above the UK-wide figure. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| A single integral garage | £20,000–£33,500 |
| Higher specification | £33,500–£42,000 |
The biggest cost drivers are:
- Bathroom or kitchen
- Whether planning permission is needed
- Single or double garage
- Integral, attached or detached
A guide range is only a starting point: the guide price tool gives an instant figure for your size, and a free survey turns it into a fixed quote.
Do you need planning permission for a garage conversion in Esher?
Before anything is built in Esher, we confirm which approvals apply in England. In England converting an integral or attached garage usually does not need planning permission, unless a condition on the house removed permitted development rights (common on estates built in recent decades) or the house is listed. Building regulations approval is always needed.
Building regulations approval comes from the council’s building control service or a registered building control approver. The work is inspected at key stages, such as foundations, drainage and insulation, and a completion certificate is issued at the end.
At the survey we check your house’s planning history and any restrictions, and tell you which route applies.
What we handle
On a typical garage conversion we handle:
- Floor raised with insulation and damp-proof membrane
- Building control completion
- Electrics, heating and plastering
- Foundation check under the garage door opening
- Planning check for removed permitted development rights
- Drawings and building control application
How long does it take?
Allow 3 to 6 weeks on site. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.
Building in Esher
The South East has a broad mix of housing, from Victorian terraces in the towns to post-war semis and newer estates, so extension types vary street by street.
From KT10 outwards, we take on projects throughout Esher and the surrounding parts of Surrey.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 02
Design and fixed quote
Drawings, structural calculations and an itemised, fixed price for the agreed specification.
- 03
Permissions sorted
Applications, building control and neighbour arrangements, all before the start date.
- 04
Construction and completion
We build, put right any snags and hand over the building control certificate.
Questions about garage conversions in Esher
Do you build garage conversions in Esher?
Yes. We build garage conversions across Esher, including postcodes KT10. Every project starts with a free home visit.
How much does a garage conversion cost in Esher?
In Esher, a garage conversion typically costs £20,000–£33,500 for a single integral garage, including VAT at 20% (standard rate). Your fixed price depends on the survey and drawings.
Do I need building regulations approval?
Yes. Converting a garage to a habitable room needs building control approval for insulation, ventilation, fire safety and the new wall.
How long does it take?
Typically 3 to 6 weeks on site.
Can the floor be level with the house?
Yes. The garage floor is raised and insulated to match the house floor level.