Chimney Breast Removal in Bournemouth: What's Involved
Chimney breast removal is one of the most common structural jobs we take on in Bournemouth, and it's easy to see why. In a lot of the 1920s and 1930s semis around Moordown, Winton and Southbourne, the breast eats into every room it passes through, usually in exactly the spot where you want a wider sofa, a fitted wardrobe or a straight run of kitchen units.
It looks like a demolition job. It isn't, really. A chimney breast is part of the structure, and whatever is left above it has to be carried by something once the brickwork below has gone. Here's how we approach it, what the rules are, how long it takes and what it costs in 2026.
What chimney breast removal actually involves
The first question is always what's above. If you take out the breast on the ground floor only, the breast in the bedroom above and the stack through the roof are still there, and they now need new support. The same goes if you remove both floors but keep the stack, which plenty of people do because it saves on scaffolding and leaves the roofline untouched.
That support is normally a steel beam, sized by a structural engineer and sitting on padstones in the walls either side. On some jobs building control will accept galvanised gallows brackets instead, but they're only allowed in limited situations, so we never assume it until the engineer and the inspector have agreed. It's the same kind of structural work we do for wall removals and knock-throughs, just in a tighter space.
On a typical job the sequence looks like this:
A survey visit to look at the breast, the loft, the roof and any neighbouring flues
Structural engineer's calculations and a building regulations application
A party wall notice, if the breast sits on a shared wall
Dust screens up, floors protected and temporary props in
The breast taken down by hand, the steel installed and inspected
Making good: plaster, ceiling patch, floor and skirting
We take the brickwork down by hand rather than with a breaker. In a semi or terrace the chimney is often shared with next door, and nobody wants a crack appearing in the neighbour's lounge.
Do you need permission to remove a chimney breast?
Removing an internal chimney breast doesn't normally need planning permission. Taking the stack off the roof can be a different story if the house is listed or sits in one of Bournemouth's conservation areas, so we check that before anything gets priced.
Building regulations approval is needed, though, every time. The work affects the structure, so BCP Council's building control (or an approved inspector) needs to see the engineer's calculations and inspect the steel before it's boxed in. When you come to sell, the buyer's solicitor will ask for the completion certificate, and it's far easier to hand it over than to explain why you haven't got one. We cover this in more detail in what paperwork your Dorset builder should give you.
If the breast is on a party wall, which it usually is in a semi or terrace, the Party Wall etc. Act 1996 applies and your neighbour needs formal notice at least two months before work on that wall starts. We'll tell you at the survey whether it applies and help you get the notice right.
How long does chimney breast removal take?
Less time than most people expect. A ground-floor breast is usually 3 to 5 days on site, including the steel and plastering. Both floors with the stack kept runs to about a week, and taking the whole lot out, stack included, is more like one to two weeks because of the scaffolding and the weather on the roof.
The bit that takes longer is the lead-in. Allow a couple of weeks for the engineer's calculations and the building regs application, and two months if a party wall notice is needed. That's worth knowing if you're trying to have a room finished before Christmas.
Chimney breast removal costs in Bournemouth (2026)
These are our typical 2026 prices for work around Bournemouth, Poole and Christchurch. Every chimney is different, so treat them as a guide until we've been out to look at yours.
Ground-floor chimney breast only, with steel support: £1,900 to £3,400
Ground and first floor, with the stack kept and supported in the loft: £2,700 to £4,800
Full removal including the stack, with the roof made good: £3,600 to £6,600, plus scaffolding at around £850 to £2,400 depending on access
Structural engineer's calculations: £420 to £840
Making good (plaster, ceiling patch, floor and skirting): allow roughly £1,200 per room
Building control fees are set by the council or the approved inspector and come on top. The biggest swing factors are what's above the breast, how easy the roof is to reach (a three-storey Victorian in Boscombe is not the same job as a bungalow in Kinson) and whether next door still uses their side of the flue. Older properties nearly always land toward the higher end. If you're opening up a room at the same time, our guide to the cost to remove a load-bearing wall in Dorset covers the steelwork side in more depth.
A few things we've learned on Bournemouth jobs
Check next door's side first. We've opened up breasts in Winton and Charminster where the neighbour's chimney was still connected to a working gas fire, and that changes the plan completely. It's why we look in both lofts where we can.
Don't take out just the ground floor if you're unsure about the stack. Supporting a stack you later decide to remove means paying for steel twice, so if there's any chance you'll want the whole thing gone, it's usually cheaper to do it in one go.
Think about the floor early. Removing the hearth leaves a gap in the boards or the slab, and in rooms with original floorboards it's worth deciding up front whether you're patching or relaying. Matching 90-year-old pine is harder than it sounds.
Related reading
Thinking about losing the chimney breast?
If you're in Bournemouth, Poole, Christchurch or anywhere else across Dorset and Hampshire, we'll come out, look at the chimney from the room right up to the roof, and give you a clear written price that covers the engineer, building control and making good. Book a survey visit with Complete Builds and we'll take it from there.
Comments