Creating an open plan kitchen/diner
Knocking down an existing wall to create an open plan living space doesn’t require planning permission, as long as you aren’t increasing the overall footprint of the property. You will need to follow Building Regulations for any structural changes or electric work.
Fitting new windows and doors
If you are planning to fit new windows and doors in existing openings in a house you don’t normally need planning permission, unless the building is listed. If you want to create a new opening, you can normally do so without planning permission as long as upper floor windows on a side elevation are glazed with obscured glass and fixed in a non-opening frame.
If you are thinking of adding a bay window to your property, it could be counted as an extension. If the new bay will project closer to an adjoining road than the nearest part of the house, planning permission would be required.
Converting a garage into a room
Converting a garage into a useable room can in most cases be done without planning permission – as long as all the work is internal and doesn’t increase the building’s square footage. However, permitted rights have been removed from some properties when it comes to garage conversions, so it’s always worth checking with your local planning authority, especially if you live in a new housing development or conservation area.
Building a single storey extension
Whether you’ll need planning permission will depend on the size of your extension. For example, in England, to be built without planning permission, extensions need to be lower than 4 metres high and shouldn’t extend more than 3 metres to the rear of the house if attached or 4 metres if detached. The extension also shouldn’t exceed 50% of the total area of land around the original house.
Dividing a house into multiple dwellings
If you want to subdivide an existing property into multiple units, you must have planning permission in place first.
Converting a loft into a room doesn’t normally require planning permission, although as with an extension, it depends on the size of the room you are creating, among other factors.