Do you need Planning Permission to build your garden room? This is the first question you should ask yourself! In many cases you wont need to apply for Planning Permission but you do need to check your individual circumstances, because whether you do need it or not depends on where you live and the size and shape of the garden room you are planning.
Garden rooms under 2.5m are the most flexible when it comes to Planning Permission as they can be sited right up to the boundary of your garden ie your fence, hedge or wall.
If you are thinking of a mono pitched garden room you have to site it more than 2m from any boundary, you also have restrictions on how high the building can be.
Dual pitched roof garden rooms also need to be sited more than 2m from the boundary, and there are height restrictions on the height of the eaves and the ridge of the building.