Garage Conversions in Cobham.
Cobham has a higher proportion of detached garages than most of the towns we work in — set away from the house, at the end of a drive, or built as part of an outbuilding. That distinction matters more than it first appears. Converting an attached garage produces another room in the house. Converting a detached one produces a separate building, and that is a different proposition in almost every respect.
Read our garage conversion cost guideRequest Your Free Cost Proposal
Tell us about your Cobham project. We respond within 24 hours with a clear, itemised proposal.
Specialist focus in Cobham.
A detached conversion needs its own heating, its own power supply run underground from the house, its own insulation strategy and, if it is to include a shower or a kitchenette, its own drainage connection. Done properly it makes an excellent studio, home office, gym or guest annexe. Done as though it were an attached garage, it becomes a cold building nobody uses in winter. The first thing we establish on site is which of the two jobs you actually have.
As a premium design-and-build company we take on a limited number of projects at a time, so that every one gets the attention it deserves. If you are planning work on your Cobham home, we would love to hear about it.
The Grand Standard
- Transparent weekly billing, no large deposits
- One team from design to completion
- Planning & building control managed for you
Planning authority
Elmbridge Borough Council
We handle applications, party wall agreements and building regulations on your behalf.
Local housing stock
Large detached homes · executive properties · period houses · gated developments
Also serving nearby
What we deliver in Cobham.
- 01
Attached Garages
The conventional conversion: insulate and damp-proof the envelope, raise the floor to run flush with the house, infill the opening to match the elevation, and bring the room into the existing heating and electrical systems as a full part of the house.
- 02
Detached Garages & Outbuildings
A separate building needs a separate strategy. Power is run underground from the consumer unit, heating is designed for a building that stands on its own, and the insulation specification matters far more because there are no warm rooms on the other side of any wall.
- 03
Drainage & Services Runs
Whether a detached building can take a shower room or a kitchenette depends entirely on where the existing drainage runs and at what level. This is the question that most often decides what a detached conversion can be, so we establish it at the first visit rather than after a design has been agreed.
- 04
What It Can Legitimately Be Used For
There is a meaningful difference between an outbuilding used as a study or a gym and one used as independent living accommodation, and the two are treated differently. We set out clearly what is being applied for and what the finished building may be used for, so there are no surprises later.
Epsom Garage Conversion
The Challenge
Integrating the existing, lower-level garage slab with the main house floor level while ensuring maximum ceiling height for the new living space.
Our Solution
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.
Your questions, answered.
Your Cost Proposal
Measured first, then itemised.
Every Cobham project begins with a free consultation and a fully itemised Cost Proposal, and with weekly billing you only ever pay for completed, signed-off work.
Read our garage conversion cost guideTransform your Cobham home.
Tell us about your Cobham project and we'll arrange a free, no-obligation consultation, followed by a clear, itemised Cost Proposal, usually within 24 hours.
“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.”