Chimney Breast Removed Without Building Regs? What Your Surveyor Will Flag

In England and Wales, chimney breast removal is notifiable work under Building Regulations Part A (Structure). If it was carried out without approval, a RICS surveyor will flag it in their report as a potential structural risk. Buyers typically have two routes: an indemnity insurance policy from the seller, or retrospective building regulations approval. For any property with a chimney breast removed or altered, a Level 3 Building Survey is strongly recommended.

Why Building Regulations Are Required

Chimney breasts — particularly in Victorian and Edwardian terraced or semi-detached houses — are often load-bearing. They may support floor joists, internal walls, and in some cases elements of the roof structure above. Removing one without correctly specifying a steel RSJ (rolled steel joist) beam to transfer the structural load can compromise the integrity of the whole building.

Under the Building Regulations 2010 (England and Wales), chimney breast removal falls under Part A (Structure). The work is notifiable — it must be submitted to local authority building control, or to a registered private building control inspector, before work begins. When approval is granted, the local authority inspects the work at key stages and issues a completion certificate. This certificate is what buyers, conveyancers, and mortgage lenders rely on when the property is later sold.

What Surveyors Look for When a Breast Is Missing

A RICS surveyor inspecting a property where a chimney breast has been removed will typically look for:

• A section of fresh or patched plasterwork on an internal wall where the breast previously sat

• A visible RSJ or steel beam overhead at ceiling or floor level

• A chimney stack still present on upper floors or on the roof that appears unsupported from below

• Cracking or movement in the walls adjacent to where the breast once stood

The surveyor will then check whether documentation for building regulations approval can be confirmed. If it cannot, this will be noted in the report — typically as a defect requiring further investigation or legal action before exchange.

The Risk of a Missing Completion Certificate

Without a completion certificate, it is not possible to confirm that:

• A correctly specified RSJ beam was installed to carry the structural load safely

• Adequate support was provided to any chimney breast or stack remaining on upper floors or within the roof space

• Party wall obligations were fulfilled if the property is terraced or semi-detached

In terraced and semi-detached houses, chimney breasts often form part of or sit adjacent to the party wall. Under the Party Wall etc. Act 1996, notice must be served on adjoining owners before this type of structural work begins. If no notice was served, this is an additional legal risk that your solicitor will need to consider.

What the Survey Report Will Say

A surveyor's report uses condition ratings to describe the severity of a defect. A chimney breast removed without building regulations approval is likely to attract a Condition 3 rating (the most serious, requiring immediate or urgent attention) or at minimum a Condition 2 rating recommending further investigation.

The report will typically recommend:

• Asking the seller to confirm whether a completion certificate exists and to provide it

• Obtaining a structural engineer's assessment if no certificate is available

• Speaking to your conveyancer about the legal implications before exchange of contracts

Your Options as a Buyer

When building regulations approval is missing, there are two main routes available:

Option 1: Indemnity Insurance

The seller can obtain an indemnity insurance policy covering the missing building regulations approval. This is a widely used solution that lenders generally accept. A standard policy typically costs between £100 and £350 and protects against local authority enforcement action.

However, it is important to understand that an indemnity policy covers the legal risk — not the structural safety of the work. If you are at all concerned about whether the removal was correctly carried out, a structural engineer's assessment is strongly recommended alongside the policy.

Option 2: Retrospective Building Regulations Approval

The seller can apply for regularisation from the local authority. This process involves opening sections of wall or floor to allow an inspector to verify what structural support was installed. It is more time-consuming and costly than indemnity insurance, but if approved, it produces a formal completion certificate that removes the legal question entirely. For buyers with a long-term outlook on the property, this is the cleaner solution.

Which Survey Level Is Right for This Property?

If you are buying a property where a chimney breast has been removed — with or without documentation — a Level 3 Building Survey is the appropriate choice. A Level 3 survey:

• Assesses the structural impact of alterations including chimney breast removal

• Reports on any evidence of movement or cracking in walls adjacent to where the breast stood

• Provides a clear condition rating and detailed advice on the next steps required

• Is designed for older, extended, altered, or non-standard properties of any construction type

A Level 2 Homebuyer Report is not designed to assess structural alterations in the same depth. Where a chimney breast has been altered and documentation is uncertain, it may not provide sufficient information to make an informed buying decision.

Frequently Asked Questions

Does chimney breast removal always need building regulations approval?

Yes. In England and Wales, it is notifiable work under Building Regulations Part A (Structure). Permitted development rights do not apply because the work affects the structural integrity of the building.

Can indemnity insurance replace retrospective approval?

An indemnity policy is widely accepted by lenders and conveyancers, but it covers the legal risk rather than structural safety. A structural engineer's assessment alongside the policy gives a much clearer picture of whether the work was carried out correctly.

What if the chimney stack is still visible on the roof?

This is a key concern. A remaining chimney stack that has lost its breast below it is potentially unsupported. Surveyors pay particular attention to this and will often recommend a specialist inspection of the roof space and upper floors if the stack appears unsupported.

Will a mortgage lender refuse to lend on this type of property?

Most lenders will proceed once either an indemnity policy or a regularisation certificate is in place. They are unlikely to lend without one or the other — and their own mortgage valuer may flag the issue independently if your independent surveyor does not.

Get a Level 3 Survey Before You Commit

A Level 3 Building Survey from Nivek Surveying Services covers chimney breasts, adjacent walls, upper floors, and roof structures, assesses any evidence of movement or alteration, and provides plain-English guidance on what you need to resolve before proceeding.

We carry out Level 3 Building Surveys across Nottingham, Derby, Leicester, Coventry, Mansfield, and the surrounding East Midlands area. Get in touch to arrange a survey on any property that raises questions.