prt

It would seem so yes. https://www.planningportal.co.uk/permission/common-projects/outbuildings/is-building-regulations-approval-needed-for-an-outbuilding Building a detached garage of less than 30 square metres of floor area would not normally need building regulations approval if: the floor area of the detached garage is less than 15 square metres. the floor area of the garage is between 15 square metres and 30 square metres, provided the garage is at least one metre from any boundary, or it is constructed substantially of non-combustible materials.

That's exactly the plan! A bike workshop for now, but flexible for a garage and office space in the future if needed. The building will be at the end of our garden and not attached so should be good. Though in Wandsworth you need planning permission for anything over 15sqm I worry about water ingress from the floor perhaps Arco drainage around it could help. And whether the insulation will be sufficient to keep it warm or the lack of insulation on the flooring will be an issue.

Thanks good idea. They are on an old concrete slab where the previous garage was. Then concrete mix, and pavers on top.

I'm thinking of starting a new project, and building a new garage that can double up as a garden room for office space or extra room space should we need it in the future so will need to be insulated. I have paving at the moment, 2cm porcelain, which our landscaper said should strong enough to park a car on. Not sure though? However, Would it be suitable to build a timber garage shell on top of these pavings. Similar to the building in this image. And then have an insulated roller door on the far side for the car access. Any advice would be great Thanks