Chimney Removal Cost UK 2026: How Much Does It Cost to Remove a Chimney?

Removing a chimney stack or breast is a common structural alteration in UK homes, especially during open-plan renovations, kitchen extensions, and loft conversions. Many older properties still have redundant chimneys that take up valuable space and add unnecessary maintenance costs.

But how much does chimney removal cost in the UK in 2026?

This guide breaks down chimney breast removal costs, full chimney stack removal prices, structural considerations, and the key factors that affect your overall budget.

Average Chimney Removal Cost in the UK

The cost of removing a chimney depends on whether you are removing part of it internally, fully removing it above roof level, or carrying out structural support work.

Typical costs are:

• Remove chimney breast (ground floor only): £1,500 – £3,000
• Remove chimney breast (multiple floors): £2,500 – £6,000
• Remove chimney stack above roof level only: £1,000 – £3,500
• Full chimney removal (stack + breast): £3,500 – £8,000+
• Complex structural removal in period homes: £6,000 – £12,000+

For most UK homes, chimney removal typically costs between £2,000 and £6,000.

Types of Chimney Removal

Chimney Breast Removal (Internal Only)

This involves removing the protruding chimney breast inside the room while leaving the external stack in place.

Benefits:

• Creates more usable floor space
• Improves room layout
• Ideal for open-plan conversions

Typical cost:

£1,500 – £6,000

This is one of the most common options in living room and bedroom renovations.

Chimney Stack Removal (Above Roof Level)

This involves removing the external chimney stack that sits above the roofline.

Benefits:

• Reduces roof maintenance
• Eliminates structural instability risks
• Improves roof aesthetics

Typical cost:

£1,000 – £3,500

This must be carefully supported during removal to avoid roof damage.

Full Chimney Removal

This includes removing both the chimney breast inside the home and the external stack.

Benefits:

• Maximises internal space
• Removes all maintenance issues
• Ideal for full property renovations

Typical cost:

£3,500 – £8,000+

This requires structural work and proper load redistribution.

What Affects Chimney Removal Costs?

Several factors influence the total cost of chimney removal.

Structural Support Requirements

Chimneys are often load-bearing elements of a building.

Removal may require:

• Steel beams (RSJs)
• Temporary structural supports
• Building control approval
• Structural engineer calculations

Structural support typically adds:

£500 – £3,000+

Property Type and Age

Older properties often have:

• Larger chimney stacks
• Shared party wall chimneys
• More complex structural loads
• Hidden flues and voids

Victorian and Edwardian homes usually cost more to modify safely.

Number of Floors Affected

The more floors the chimney runs through, the higher the cost:

• Single-storey removal: lowest cost
• Two-storey removal: moderate cost
• Three-storey removal: highest cost

Each additional floor increases labour and structural complexity.

Roofing and External Repairs

If the chimney stack is removed, roof repairs are required, including:

• Re-tiling
• Roof membrane patching
• Weatherproofing
• Ridge line finishing

Roof repairs typically cost:

£300 – £1,500+

Plastering and Finishing

Once the chimney is removed, internal walls and ceilings must be made good.

This includes:

• Plastering exposed areas
• Floor patching
• Skirting board replacement
• Decoration

Finishing costs typically range from:

£500 – £2,500

Do You Need Planning Permission to Remove a Chimney?

In most cases, chimney removal does not require planning permission.

However, you may need approval if:

• The property is listed
• You are in a conservation area
• The chimney is externally visible and affects building appearance
• Party wall agreements are required with neighbours

Even if planning permission is not needed, building regulations approval is usually required due to structural changes.

Do You Need Building Regulations Approval?

Yes, chimney removal almost always requires building regulations approval because it involves:

• Structural load redistribution
• Installation of steel beams
• Alterations to load-bearing walls

A building control officer will typically inspect:

• Beam installation
• Structural support work
• Final completion

How Long Does Chimney Removal Take?

Typical timeframes:

• Chimney breast removal: 2–5 days
• Chimney stack removal: 1–3 days
• Full chimney removal: 4–10 days

Additional time may be needed for plastering and finishing work.

Does Removing a Chimney Add Value to a Property?

Chimney removal can add value indirectly by improving layout and usable space.

Potential benefits include:

• Larger open-plan rooms
• Better kitchen layouts
• Improved modern appeal
• Increased usable floor area

In many cases, the value uplift comes from the redesigned space rather than the chimney removal itself.

Risks and Considerations

Chimney removal must be carefully planned due to:

• Structural stability risks
• Party wall complications
• Hidden flue systems
• Unexpected load-bearing requirements

Hiring a qualified structural engineer and experienced builder is essential.

Ways to Save Money on Chimney Removal

To reduce costs:

• Remove chimney during wider renovation work
• Combine with loft or extension projects
• Retain partial stack where possible
• Obtain multiple structural contractor quotes
• Plan plastering and finishing in one package

Coordinating works is often the biggest cost-saving opportunity.

Chimney Removal Cost Calculator

The fastest way to estimate chimney removal costs is with a personalised calculation based on:

• Property type
• Number of floors affected
• Structural requirements
• Location
• Finishing work required

Pricing Penguin's AI-powered cost calculator provides instant chimney removal cost estimates using real UK structural renovation pricing data, helping homeowners budget accurately before hiring contractors.

Final Thoughts

Chimney removal is a highly effective way to unlock space in older UK homes, especially during kitchen and open-plan renovations.

For most properties, chimney removal costs range from £2,000 to £6,000, while complex full removals can exceed £10,000+.

With proper structural planning and professional installation, it can significantly improve layout flexibility and modernise your home.