Extension Rules

[Purist]

Is it possible to build a wooden shelter and bolt it to the extension to the rear of a property? or would that go against laws? If not I would try to make it free standing, its to cover the patio area.

[Atheist]

Best to ask your Local Planning Authority (LPA; your local council, presumably). You'll need to provide a sketch or description detailing the size, materials, location. This needs to show the context, i.e. address, closeness to boundary, front or back, etc. Ask for an informal view, preferably by visiting them, but at the moment you'd presumably need to write or e-mail. Don't build anything on anybody's say-so but the LPA: advice here is all very well, but won't get you off the hook if the LPA eventually makes you demolish.

[The Builder]

I believe that Atheist is Ex-Planning by profession. He is absolutely right.

There are however rules for "Permitted Development". These allow for some extensions that do not need PP.
I've include a link here to help you get an idea, before you talk to the Planners.
Arm yourself with the facts, so you'll be able to relate to what the Planning Officer tells you.

You may well be able to go ahead without troubling them, but, as Atheist says, you must be sure of your situation.

https://interactive.planningportal.co.uk/