Your questions answered

We get this a lot, usually when we put out progress pictures on Facebook or our project updates. It's not us being evasive. There are two good reasons we don't give a price over the phone or by email.

First, the progress and final pictures we share belong to real customers, and what they paid for their garage conversion, extension or garden room is a private financial matter. If you become a customer, we'd give you the same discretion.

Second, our buildings and conversions aren't an off-the-shelf item. They're built from raw materials to your size, specification and budget. The price varies with the ground it's going on, the distance from the house for the power supply and cable size needed, access to the site, and what the room will be used for. A gym, for example, needs a different sub-floor and bigger joists than a home office or salon.

So if we ask for more information or a site visit, it's because we don't guess at prices. We price it just for you, and the price we agree is the price you pay.

Permitted development rights allow certain building work to go ahead without full planning permission, as long as it meets set conditions on size, position and impact on neighbours. Converting an existing garage into living space is usually covered, since the work is internal and doesn't enlarge the building or change its footprint.

These rights can be restricted or removed by an Article 4 direction, by a planning condition on some newer estates, or if the property is listed or in a conservation area, so it's always worth checking with your local council before starting work. Even where permitted development applies, the job still needs to meet building regulations for structure, insulation, fire safety and ventilation.

As of 2026, a single garage conversion in the UK typically costs between £8,500 and £15,000, with most homeowners paying around £10,000 to £20,000 for a standard 2.5m x 6m (15m²) integral or attached garage. That's roughly £1,440 to £1,920 per m² for a standard finish.

Costs rise for a detached garage, since electrics and heating need to be run out from the main house, and extra insulation is usually needed because every wall is an external wall.

In most cases, no. Converting an integral or attached garage into living space usually falls under permitted development, since the work is internal and doesn't extend the building's footprint or alter the driveway or front elevation.

You will need full planning permission if your home is listed or in a conservation area, or if the property has an Article 4 direction or a planning condition removing permitted development rights. That's common on some newer estates, to protect off-street parking.

A garden room in the UK can cost anywhere between £10,000 and £50,000 in 2026, with most professionally installed, mid-range builds landing around £15,000 to £20,000 for a standard 15m² space.

Bespoke, fully insulated garden rooms built for year-round use start from around £15,000. Per square metre, expect £1,000 to £2,500 for a high-end build.

Our garden rooms are built from scratch at your home, to the same spec as a timber-frame house. From the inside out:

• Plasterboard with a skim finish
• 100mm x 50mm structural timber stud
• Full insulation within the stud
• OSB outer layer
• Breather membrane building wrap
• 25mm x 50mm batten
• Cladding finish of your choice (timber or uPVC)