Garage Conversions in Surrey
Turn an unused garage into a gym, home office or extra bedroom. Built to full habitable standard, with Building Regulations handled for you.
Enquire Now →Garage Conversions Done Properly
Most garages already have the walls, roof and foundations in place, so a conversion is usually quicker and cheaper than a traditional extension.
ADO Builders converts garages across Surrey into rooms people actually use: home gyms, offices, extra bedrooms and shower rooms. A conversion adds usable floor space without taking any of your garden, and it is often a sensible alternative to moving.
We look after the whole job, from the survey and Building Regulations through to insulation, electrics, plastering and decoration, so you deal with one builder from start to finish.
What We Convert Garages Into
Most garages spend their life storing bikes and boxes. We turn that space into something you will actually use.
Home Gyms
Insulated, heated and finished properly for daily use.
Home Offices
A quiet space wired for power and connectivity.
Extra Bedrooms
Converted to full habitable-room standard.
Shower and Wet Rooms
Add a shower room or wet room alongside your gym or bedroom.
Playrooms and Hobby Rooms
Warm, dry space for children, music, crafts or a games room.
Utility Rooms
A practical laundry or boot room next to the kitchen.
Recent Garage Projects
Real garage projects by ADO Builders across Surrey.
Types of Garage We Convert
Integral and attached garages
Sharing a wall with the house, these are usually the simplest and most cost-effective conversions. The internal door and services are already in place, and most do not need planning permission.
Single garages
The most common project. A single garage suits a home gym, office or spare bedroom, and swapping the garage door for a window brings in plenty of light.
Double garages
Enough room to make one large space, split it into two rooms, or combine a living area with a shower room or utility.
Detached garages
A detached garage can become an office, studio or guest room. It needs more design thought, including insulation, services and sometimes planning permission.
How Much Does a Garage Conversion Cost in Surrey?
Typically £13,000 to £25,000
Most garage conversions in Surrey fall in this range. The final figure depends on:
- The size and type of garage
- How the room will be used, such as a gym, office or bedroom
- Whether you want a shower room or wet room
- Heating, for example electric underfloor heating
- Replacing the garage door with a window or brickwork
- The level of finish and fittings
We give you a clear written quote after a site visit, so you know the full cost before any work starts.
How a Garage Conversion Works
Survey and quote
We visit, check the garage and talk through how you want to use the space. You get a clear written quote.
Design and approvals
We agree the layout, submit Building Regulations and check whether planning permission applies.
The build
Insulation, damp proofing, electrics, heating, plastering and flooring, with the garage door usually replaced by a wall and window.
Finish and sign-off
Decorating, final fixes and Building Control sign-off, so the room counts as proper living space.
Garage Conversions Across Surrey
Based in Surrey, we convert garages in Guildford, Godalming and the surrounding towns and villages. Read our local guides:
Garage Conversion FAQs
Do I need planning permission for a garage conversion?
Usually not. Converting an attached garage is normally permitted development, provided the outside of the building does not change significantly. Detached garages, listed buildings, conservation areas and homes where permitted development rights have been removed may need planning permission, and some estates have a planning condition that keeps the garage as parking. We check this before we quote. Building Regulations approval is required in every case.
Do I need Building Regulations approval?
Yes. A converted garage becomes a habitable room, so it has to meet standards for insulation, damp proofing, ventilation, fire safety and electrics. We handle the application and the inspections.
How long does a garage conversion take?
Most conversions take a few weeks on site, depending on insulation, damp proofing and any electrical work involved. Adding a shower room or wet room, or converting a detached garage, can take longer.
How much does a garage conversion cost in Surrey?
Most garage conversions in Surrey fall between roughly £13,000 and £25,000, depending on the size of the garage, how the room will be used and the level of finish. We give a clear written quote after a site visit.
Will a garage conversion add value to my home?
Usually, yes. Extra habitable space tends to add value and often costs far less than moving or building a full extension. The effect depends on your property and the quality of the work, so it is worth asking a local estate agent for a view.
Will the converted room be warm and dry?
Yes. We insulate the floor, walls and ceiling and add damp proofing to habitable-room standard. The room can be heated like any other, including electric underfloor heating if you want it.
Have a garage sitting unused?
Get in touch and we'll talk through what's possible for your space.
Contact Us