Written by Andrew, Lead Roofer
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Chimney removal costs £800 to £6,000 in the UK in 2026. Stack vs breast vs full removal, London prices, building regs and roof reinstatement.
Chimney removal costs from £800 to £6,000 in the UK in 2026, depending on whether you remove the chimney stack above the roof, the chimney breast inside the house, or the whole chimney from roof to ground floor. Removing a chimney stack alone is the cheapest job because it is mostly roofing work. Removing a chimney breast across two floors is more involved, and removing the entire chimney is the largest job of the three. In London, where most chimneys sit on Victorian and Edwardian terraces with shared stacks and restricted access, prices tend to sit at the upper end of those ranges.
This guide sets out what chimney removal costs by type, what the figures look like in London by property type, and the parts of the job that other cost guides tend to skip. The biggest of those is what happens to the roof once the stack comes off, because the hole left behind has to be reinstated properly or it leaks. This guide also covers partial chimney breast removal, the building regulations and planning rules that apply, the Party Wall position for shared chimneys, and how to decide whether removal is the right move at all.
The table below gives typical UK figures for the three main types of chimney removal, with a separate London column because London prices run higher. The figures include labour, waste removal and basic making good. They assume safe access and no asbestos. Costs for scaffold, structural support and building control are set out further down, because those vary by property and can change the total significantly.
| Type of removal | Typical UK cost | Typical London cost |
|---|---|---|
| Chimney stack only (above the roofline) | £800 to £1,800 | £1,000 to £2,500 |
| Chimney breast, one floor | £1,500 to £2,500 | £2,000 to £3,000 |
| Chimney breast, two floors | £2,500 to £4,500 | £3,000 to £5,000 |
| Full chimney removal (stack and breast, all floors) | £3,000 to £6,000 | £4,000 to £6,500+ |
These figures describe the common scenarios. A small ground-floor chimney breast in a house with easy access can come in below the bottom of its range. A full chimney removal on a four-storey terrace with a shared stack and a party wall agreement can run above the top of its range once surveyor fees are added. The sections that follow explain what moves a job from one end to the other.
A chimney has two parts that get removed, and understanding the difference is the key to understanding the cost. The chimney stack is the masonry that stands above the roof. The chimney breast is the structure that projects into the rooms below, usually with the old fireplace openings. A removal job deals with one part, the other, or both.
Chimney stack removal is the most affordable option because it is led by a roofer rather than a builder. The stack is taken down to roofline level, the flue is sealed, and the roof is closed up where the brickwork used to pass through. There is no internal disruption because the chimney breast inside the house stays in place. Stack removal suits a homeowner who wants rid of a redundant stack that is costing money in repointing and flashing repairs, while keeping the chimney breast and fireplace features indoors.
Chimney breast removal is internal work and costs more per floor because it affects the structure of the house. The chimney breast is often load-bearing, so the masonry above whatever is removed has to be supported. Removing a chimney breast in one room is a contained job. Removing the breast on the ground floor and the first floor at the same time is a larger one, because more masonry comes out and more support goes in. Breast removal is the route for a homeowner who wants to reclaim floor space in a bedroom or a reception room.
Full chimney removal takes out the stack and the breast together, from the roof down through every floor. It is the most expensive option because it combines roofing work, internal structural work, more scaffold time, more waste, and more making good across more rooms. Full removal makes sense when a chimney is no longer used anywhere in the house and the owner wants it gone completely rather than dealt with floor by floor over several years.
| Chimney stack removal | Chimney breast removal | |
|---|---|---|
| Where the work happens | On the roof | Inside the house |
| Led by | Roofer | Builder, with structural input |
| Structural support needed | No | Usually, if load-bearing |
| Internal disruption | None | Significant per room |
| Typical duration | 1 to 2 days | 2 to 5 days per floor |
London chimney removal costs more than the national figures because labour rates are higher, access is harder, and the housing stock is older. Most chimneys in London sit on Victorian and Edwardian terraces, where the stack is often shared with the neighbour and the only way to reach the rear roof slope is through the house or over a narrow side return. Those two factors, shared structure and restricted access, are what push London prices up rather than any difference in the work itself.
The table below gives typical London figures by property type. They are a guide for budgeting rather than a quote, because the condition of the chimney and the access on the day still drive the final number.
| Property type | Common removal job | Typical London cost |
|---|---|---|
| Victorian terrace | Full removal, shared stack | £4,000 to £6,500 |
| Edwardian or larger period terrace | Breast removal, per floor | £2,000 to £3,000 |
| 1930s semi-detached | Full removal, own stack | £3,000 to £5,000 |
| Detached house | Stack removal | £1,200 to £2,500 |
| Flat or upper maisonette | Breast removal, one floor | £1,500 to £2,500 |
Period terraces carry an extra consideration beyond cost. Many sit within a conservation area, and some are listed, which changes what is allowed and adds a permission step before any work starts. The regulations section below covers this. Bernard Andrews works across the older boroughs where this is routine, and the Islington area page gives a sense of the period-property and conservation work that chimney removal sits alongside in those streets. For a London quote, the condition of the stack and the access route matter more than the headline figure, so an inspection comes first.
Several factors move a chimney removal cost up or down, and the headline price rarely tells the whole story. Knowing what sits behind the number makes it easier to compare quotes and to spot where a cheap quote has left something out.
Access is the first factor. A chimney stack on a front roof slope above a pavement is straightforward to reach. A stack on a rear slope behind a two-storey extension, reached over a narrow side return, needs more scaffold and more time. Access affects both the stack work and the cost of getting waste down from height.
Scaffold is where many quotes and many online estimates go wrong. A chimney removal needs a scaffold that reaches the stack, not a full roof scaffold. The figure for that access scaffold sits at around £400 to £900 for a typical house. Some cost guides quote £3,000 to £4,000 for scaffold on a chimney job, but that is the price of scaffolding an entire roof for a re-roof, not the price of reaching one stack. It is worth checking exactly what any scaffold line covers, because it is an easy place for a quote to be inflated.
Structural support is the main cost driver on breast removal. If the chimney breast is load-bearing, the masonry above the section being removed has to be carried, usually on gallows brackets or a steel beam. That work needs design input and adds to the bill. The support section below covers it in detail.
Waste removal is more expensive for chimney work than people expect, because chimney masonry is heavy. A chimney breast across two floors produces a large volume of dense brick and mortar. Skip hire for that runs to around £200 to £400, and a heavy load sometimes needs a grab lorry rather than a standard skip.
The table below sets out the additional costs that sit on top of the headline removal price.
| Additional cost | Typical price | When it applies |
|---|---|---|
| Access scaffold to the stack | £400 to £900 | Most stack and full removals |
| Skip hire or grab lorry | £200 to £400 | All removals, higher for full jobs |
| Structural engineer’s calculations | £350 to £700 | Load-bearing breast removal |
| Building control approval | £200 to £400 | Breast and full removal |
| Party Wall surveyor | £700 to £1,500+ per neighbour | Shared stacks and party walls |
| Internal making good and redecoration | £150 to £400 | Breast and full removal |
The part of a chimney removal that most cost guides reduce to a single throwaway line is the part that protects the house. When a chimney stack comes off, it leaves a hole in the roof where the brickwork used to pass through, and that opening has to be reinstated to the same standard as the rest of the roof. Reinstating it properly is not an optional extra. It is the difference between a removal that keeps the house dry and one that leaks within a year.
Closing the roof correctly is roofing work, which is why a chimney stack removal is better handled by a roofer than by a general builder. The roof structure under the old stack has to be made good first. That means fitting new rafters or noggins where the chimney once interrupted the timbers, so the roof has something to span the gap. New roofing battens go on next, then a layer of roofing felt or breathable membrane to carry water away beneath the covering.
The covering itself then has to be reinstated to match. On a slate roof the opening is re-slated with slates that match the existing ones in size and colour, so the repair is not obvious from the street. On a tiled roof the opening is re-tiled in the same way. Matching old slates and tiles takes care and sometimes reclaimed materials, which is part of why the make-good has a real cost rather than a token one. Reinstating the roof covering over the old stack position typically adds £300 to £800 depending on the roof type and how hard the materials are to match.
Weatherproofing the junction is the final step. Where the roof meets any retained structure, new lead flashing is dressed in to seal the joint, because that junction is where water finds its way in if the detail is rushed. Lead flashing done well lasts for decades. A cheaper sealant-only finish does not, and it is a common sign that a stack removal was priced to win on headline cost rather than to keep the house weathertight. When you read a quote that prices the whole roof reinstatement at a flat £150, that figure is covering the inside patch, not the roof, and the roof is where the money should be going.
Removing a chimney breast on a single floor is a common request, usually to reclaim space in a bedroom while leaving the chimney intact elsewhere in the house. It is a smaller job than a full removal, but it is not a small job, because the masonry that is left above the removed section still has to be held up. This is the part homeowners most often underestimate.
When a chimney breast is removed on one floor, the chimney breast and stack above it do not disappear. That masonry now has nothing beneath it, so it has to be supported. The traditional method is a pair of gallows brackets, which are steel brackets bolted to the party wall or the flank wall that carry the weight of the masonry above. Where gallows brackets are not suitable, for example where the wall they would bolt to is not strong enough, the masonry is carried on a steel beam instead. Either way, the support has to be designed for the load, not guessed.
This is why partial chimney breast removal needs a structural engineer and building control, even though it looks like a contained job. A structural engineer calculates the load and specifies the brackets or the beam, which costs around £350 to £700. Building control then checks that the work meets the regulations, which adds £200 to £400. Skipping these steps is a false economy, because unsupported masonry above a removed breast is both dangerous and a problem that surfaces at survey when the house is later sold. Removing a chimney breast on one floor typically costs £1,500 to £2,500, or £2,000 to £3,000 in London, with the support and approvals making up a meaningful part of that figure.
Chimney removal is governed by three separate sets of rules, and they are often muddled together. Keeping them apart makes it clear what actually applies to a given job. The three are building regulations, planning permission, and the Party Wall etc Act 1996. Most removals engage building regulations, fewer need planning permission, and any shared chimney brings the Party Wall Act into play.
Building regulations apply to the structural side of the work. According to LABC, the body that represents local authority building control, removing a whole chimney breast or chimney stack is building work that needs building regulations approval, because it affects the structure of the building. The same guidance notes that taking down only the part of a stack that sits above the roofline does not in itself need a building regulations application, since that part is not structural in the same way. Where a stack is retained rather than fully removed, LABC advises that it should be reduced to no more than around one metre above the roof so that what is left is stable. In short, internal breast removal and full removal need building control, and a simple above-roof stack reduction usually does not.
Planning permission is a separate question and is needed less often. The Planning Portal explains that removing a chimney is normally permitted development, so it does not need a planning application in most cases. The exceptions matter in London. If the property is listed, listed building consent is required. If it sits in a conservation area or another designated area, removing a chimney that is visible from the street can need permission, because chimneys are often part of the character the designation protects. On a period terrace in a conservation area, this step is worth checking before any work is booked.
The Party Wall etc Act 1996 applies whenever a chimney is shared with a neighbour, which is the normal situation in a terrace. Many terraced stacks are built across the party wall and are shared structures, so removing your half affects your neighbour’s. GOV.UK guidance on party walls explains that work to a party structure requires notice to the adjoining owner, usually two months before the work starts, and the neighbour’s agreement. Where a shared stack is to be wholly removed, LABC’s guidance is that this should be done by agreement between both owners, with the Party Wall Act process followed. A party wall surveyor typically costs £700 to £1,500 or more per neighbour, which is why a shared chimney adds both time and cost to a removal.
Removing a chimney is worth it when the chimney is redundant and costing money to maintain, and not worth it when the chimney still has a use or when repair would solve the actual problem for less. The decision comes down to whether you will ever use the chimney again and what condition it is in now.
Removal makes sense when a chimney is no longer used for any fire or appliance, when the stack is in poor condition and swallowing money in repeated repointing and flashing repairs, or when the chimney breast is taking up floor space that matters more than the feature. In those cases the cost of removal is a one-off that ends the ongoing maintenance, and reclaiming the space can be worth more than the chimney.
Repair makes sense when the chimney is still in use, when only the flashing or the pointing has failed, or when the fireplace is a feature the room would lose without it. A failing chimney is often a maintenance problem rather than a reason for removal. Repointing a stack, renewing the lead flashing or rebuilding the top few courses costs far less than removing the chimney and reinstating the roof, and it keeps the option of a working fireplace. Our chimney repair cost guide sets out what those repairs cost, and the chimney maintenance service covers the upkeep that keeps a stack sound for years.
On the question of value, removing a chimney does not automatically devalue a house, and the effect depends on the buyer. Reclaimed floor space and a tidy roofline can add appeal in a flat or a smaller house. In a period property where buyers expect original features and a working fireplace, losing the chimney can count against the sale. The work being done properly, with the right approvals and a sound roof reinstatement, matters more to value than the removal itself, because unsupported masonry or a poorly closed roof is what shows up at survey and costs money later.
How much does it cost to remove a chimney in the UK? Chimney removal costs from £800 to £6,000 in 2026. Removing a chimney stack above the roof costs around £800 to £1,800. Removing a chimney breast costs £1,500 to £2,500 per floor. A full chimney removal costs £3,000 to £6,000. London prices sit at the higher end of each range.
Is it worth removing a chimney? Removing a chimney is worth it when the chimney is no longer used and is costing money in repeated repairs, or when the chimney breast is taking up floor space you need. If the chimney is still in use or only needs repointing or new flashing, repair is usually the better value choice.
Does removing a chimney devalue your house? Not automatically. Removing a chimney can add appeal where reclaimed space matters, such as in a flat or a smaller house. In a period property where buyers expect a working fireplace, it can count against the sale. Work done properly with the right approvals protects value either way.
Do you need planning permission to remove a chimney? In most cases removing a chimney is permitted development and does not need planning permission. Permission is needed if the property is listed, and it can be needed if the property is in a conservation area and the chimney is visible from the street.
Do you need building regulations approval to remove a chimney? Removing a chimney breast or a full chimney stack needs building regulations approval, because the work is structural. Removing only the part of a stack above the roofline does not usually need a building regulations application on its own.
How long does it take to remove a chimney? Removing a chimney stack takes one to two days. Removing a chimney breast takes two to five days per floor, depending on the support needed. A full chimney removal usually takes around a week, longer if a party wall agreement or scaffold lead time is involved.
Do I need to tell my neighbour before removing a shared chimney? Yes. A shared chimney on a party wall is covered by the Party Wall etc Act 1996. You must serve notice on your neighbour, normally two months before the work, and have their agreement before a shared stack is removed.
Can I remove a chimney myself? Chimney removal is not a DIY job. It involves working at height, structural support for load-bearing masonry, building regulations approval, and reinstating the roof so it stays watertight. The risks and the rules mean it should be done by a roofer or builder with the right experience.
A chimney removal is only as good as the parts that are easy to skip: the structural support that holds up what is left, the approvals that keep the work legal, and the roof reinstatement that keeps the house dry. A quote that prices those properly will rarely be the cheapest, but it will be the one that does not come back as a leak or a problem at survey. Bernard Andrews handles chimney removal across London and the South East, from a single stack take-down to a full removal, with the roof made good as roofing work rather than an afterthought. For a price based on your property, our chimney removal service starts with an inspection of the stack, the access and the roof.
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