Double Garage Conversions in Glasgow

A double garage gives you significantly more space to work with — enough for a large single room, or two separate rooms. Whether you want a bedroom with en-suite, a home office and utility room, or a spacious open-plan living area, a double garage conversion opens up possibilities that a single garage simply can't match.

Over 20 Years Experience

5-Star Google Reviews

Fully Accredited

Double garages — whether attached, integral or detached — typically provide 28–36 square metres of floor space. That's comparable to a generous two-room extension, but at a fraction of the cost because the structure already exists. We work with homeowners across Glasgow to design layouts that make the most of this space, whether that's a single large room with flexible zones or a fully divided two-room conversion with separate purposes.

Why Convert a Double Garage?

More space, more options

A double garage gives you enough room for a bedroom with en-suite, a home office with separate meeting area, or an open-plan living space with bi-fold doors to the garden. The extra square footage opens up layouts that simply aren't possible in a single garage.

Two rooms for the price of one build

We can divide a double garage into two separate rooms — for example, a bedroom and a bathroom, or a home office and utility room. You get two new rooms from a single conversion project.

A fraction of the cost of an extension

A double garage conversion costs significantly less than building a 30m² extension from scratch. The foundations, walls and roof are already in place — we insulate, finish and fit out the interior.

Ideal for self-contained spaces

The extra space means a double garage can comfortably accommodate a self-contained guest suite, granny annexe or teenage retreat — complete with its own bathroom and separate entrance if required.

What's Included

Every double garage conversion we carry out includes the following as standard. There are no hidden extras — what we quote is what you pay.

One or both garage doors removed and openings bricked up, glazed or fitted with bi-fold doors

Internal partition walls where two separate rooms are required

Full insulation to walls, floor and ceiling to current building standards

Complete electrical installation — lighting, sockets, data and media points

Plumbing for en-suites, wet rooms, kitchenettes or utility connections

Radiators or potentially underfloor heating throughout

Structural alterations including steels and lintels where needed

Plastering, decoration preparation and flooring throughout

Building warrant application handled on your behalf

Things to Consider

Think about whether you want one large room or two separate spaces. We can show you layout options before work begins so you can make an informed decision.

If you're creating a self-contained suite (bedroom, bathroom, kitchenette), consider whether you want a separate external entrance. This is straightforward to incorporate in most double garage layouts.

Double garages often have two garage doors. You can choose to brick up both and install windows, retain one as glazing (bi-folds or French doors), or create a mix of solid wall and glazing.

The structural opening created by removing garage doors may need a steel beam (RSJ). We handle the structural calculations and installation as part of the build — this is included in your quote.

Frequently Asked Questions

Most double garages provide 28–36 square metres of floor space — roughly equivalent to a large living room or a bedroom with en-suite bathroom. That's significantly more than a single garage (12–15m²).

Yes, this is one of the most popular options. We build a fully insulated partition wall to create two separate rooms — each with its own door, lighting, heating and power. Common combinations include bedroom + en-suite, and office + utility room.

It costs more than a single garage conversion because there's more floor area to insulate, finish and fit out. However, the cost per square metre is lower, and you're getting significantly more usable space. It's far cheaper than a comparable extension.

Absolutely. Bi-fold or sliding patio doors are a popular choice where one of the garage door openings faces the garden. They flood the room with natural light and create a connection to the outdoor space.