Approximate cost to remove a whole chimney....

[taybert]

.....not just a chimney breast or stack but the whole thing, top to bottom? It’s a detached house and the chimney itself isn’t supporting anything but we’ll be taking out the ground floor wall it’s on so will need a beam to support the first floor.

We’re trying to get quotes but I’m trying to plan a few other things too so wondered if anyone had any approximate ballpark figures for something like that? We’re in Yorkshire.

1k per story + 1k for leaving a plaster finish was our quote (victorian mid terrace)

Thanks greeneleohantscarf did you have to have some steelwork put in to support the floor/s above?

Yes similar to pp. we paid about £1000 for our detached bungalow, so one floor plus chimney stack.

No steelwork needed for ours.

Thanks, that’s a good starting point. We will need the steel beam as taking out the whole wall on the ground floor which will obviously bump up the cost.

we needed steels

There may be scaffolding costs involved in removing the stack.

Oo, good point bee, I’ll put that on my list.

Scaffold
Stack removal
2 floors plus the loft space
Make good the roof with joists and tiles
Make good the existing walls
Steels if required
Making good the floors, joists etc.

Depending on where you are, here in London I charge the local authority about 5k for a full stack removal.

Just the scaffold and steels will cost you a couple of grand at least

And you also need to hope the stack comes out easily and doesn't require a kango!

Thanks Bay, would you say it’s likely to cost a couple of k more than that 5k you charge the local authority then? 5k was our “pick a number” figure based on previous building jobs but I’d forgotten about scaffolding (though it might be a bit cheaper up here).

I’d be surprised if the stack had much integrity....

Dont forget you will need to get building regs involved to sign off on the job that it has been done correctly.

Thanks bilbo My husband is a structural engineer so he can do the calcs and we’re familiar with the local building inspector and the process from previous jobs. We’re just a bit rubbish with costs as DH’s work is commercial so costs are very different.

@taybert I'm a residential and commercial QS. I would certainly allow another 1k at least as a 'risk' item for anything unforeseen.

To be fair the main issues I've come across when removing chimneys is either the breast is solid concrete and a bugger to demolish or the stack is staying on the roof and you need to steel the full span of the loft space.

Great, thanks “Bay”, you’re the missing link in our thinking! According to my two sons DH “draws pictures of buildings” He’s good with steel, concrete and calcs but not how much small domestic works cost!