Getting planning permission then changing mind slightly

DIYedboy · 30 Jul 2015

I am going to put in plans for a 2 storey extension on the side of my 30's semi, BUT I'm in 2 minds, I'm certain of doing the ground floor but not the upstairs. If I get permission for up and down and then opt to only do downstairs will I be OK?

^woody^ · 30 Jul 2015

Why don't you do more thinking before submitting the application?

A single storey might be permitted development. If you change what is built from what was approved, then you should get that change approved.

oldbutnotdead · 31 Jul 2015

Interesting one- not sure if side extensions are covered under PD, if you do go for PP and only build one storey you'll still have to roof it, probably won't cost you a lot more to build both storeys and leave the 1st floor as a bare shell till you decide what you're doing with it.

tony1851 · 31 Jul 2015

I think you'd be OK; you could just say it's work in progress and you would complete the top when money
was available - there is no time limit.

Nakajo · 31 Jul 2015

Well, you'd need to put a roof on it. Like obnd, for the difference in cost I think I'd build out the whole thing, even if the internal fitout of the upstairs had to be put on the back burner.

^woody^ · 31 Jul 2015

You can't half build it and say its unfinished. Once substantially completed and occupied, its finished in planning terms, so you would have built a single storey when you occupy it, and not part of a two storey.

And you will need it completed prior to occupation for the building regs certificate - so they will only certify a single storey if thats what you build

DIYedboy · 31 Jul 2015

the extension is a wrap round (4 metres out all the way across the back) with wider garage and kitchen downstairs with possibly an extension of the width of the rear bedroom upstairs. I'm thinking I might run out of money, so, if that happened, I'd just complete the ground floor. The new garage will go out to the boundary and I will use a metre of it for a downstairs loo n shower accessed from the hall

Thanks very much for all your answers.

Out of interest, the 'internal' wall that will separate the cloakroom from the garage, can that be made from 4" studwork and filled with 100mm celotex that will sit on the new garage floor slab? or will I have to put in proper strip foundations and a cavity wall?

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Getting planning permission then changing mind slightly

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