Chimney problems

Buying a House With a Fireplace, Stove or Unused Chimney

Worth diagnosing rather than living with

When buying a house with a fireplace, stove or unused chimney, book a Level 2 inspection, the level tied to a property transfer, during your inspection contingency period and not after closing.

A general home inspection is not a chimney inspection, and the gap between them is where most unpleasant surprises live. A home inspector will commonly report visible exterior condition and obvious interior problems, and will ordinarily recommend a specialist review where the house has a working solid-fuel appliance. What they will not do is scan the flue with a camera, examine concealed runs in the attic or basement, or establish which flue serves what in a house that has had several heating systems. A Level 2 inspection, and a property transfer is one of the recognised triggers for it. The findings that move a transaction are the expensive structural ones: a failed liner, a cracked chimney after a fire nobody disclosed, a stack needing rebuilding, an unlined flue with a modern appliance connected to it. Those are worth knowing before closing, not after.

Before you call

Steps to take before closing

  • Ask whether the home inspection describes a specific defect or simply defers the flue to a chimney professional; obtain the scan while the inspection contingency is still open.
  • Have the inspector identify which flue serves each appliance, whether its lining is continuous, and whether there is evidence of previous chimney fire damage.
  • Turn any material defect into a written correction scope before negotiating: an unlined flue or an installation outside its listing needs more than a routine sweep.
  • Ask the seller directly when the chimney was last swept and inspected
  • Ask for any documentation of liner installation or appliance work
  • Ask whether there has ever been a chimney fire
  • Count the flues visible at the top and the appliances inside: they should reconcile
  • Look for stains on ceilings near the chimney, which suggest a long-running leak
  • Note any fireplace that has been closed off or plastered over
Three horizontal bands showing inspection coverage. Level 1 covers readily accessible portions only. Level 2 adds a camera scan of the whole flue plus accessible attic, crawl space and basement runs. Level 3 adds concealed areas reached by removing building or chimney components.Level 1Readily accessible partsRoutine annual service, nothing changedLevel 2Adds full flue camera scan and accessible concealed runsSale, fuel or appliance change, after any damaging eventLevel 3Adds concealed areas reached by removing componentsA suspected serious hazard a scan cannot confirm
The level is decided by your situation, not by preference, and each one reaches further than the last.

What a general home inspection can miss, in the order to ask

Routine: worth diagnosing instead of living with

Gap to closeOrder to ask
A general home inspection that did not cover the flue interiorFirst
A house where several heating systems have come and gone2
An unused or closed-off chimney nobody can describe3
An appliance added by a previous owner with no documentation4
A wood stove connected to a flue sized for something else5
A chimney fire in the property's history that was never disclosed6
Often confused with this

Related problems

If what you have is not buying a house after all, the full list of chimney problems is grouped by urgency, and the service triage tool takes a symptom and returns the stop condition and the service it maps to.

Buying a house

Common questions about buying a house

Does my home inspector cover the chimney?+

Only in a limited way. They will commonly report visible exterior condition and obvious interior problems, and ordinarily recommend a specialist inspection where there is a working solid-fuel appliance. They do not camera-scan the flue or examine concealed runs.

What level of inspection do I need for a purchase?+

Level 2. A property transfer is one of the recognised triggers for it, precisely because a Level 1 does not reach the parts of the system that carry the expensive problems.

When should I book it?+

Within your inspection contingency period, alongside the general home inspection. Findings only give you options while you still have the ability to act on them, and a liner or a rebuild is a significant number to discover afterwards.

What findings matter to a transaction?+

The structural and expensive ones: a failed or missing liner, damage from a previous chimney fire, a stack needing rebuilding, and an appliance connected to a flue that cannot correctly serve it. Minor pointing and a missing cap are worth knowing and rarely change a deal.

The house has a wood stove the seller installed themselves.+

Worth a specific look. Owner-installed appliances are where clearance problems, improvised connectors and unlined flues turn up, and your insurer may well ask about the installation before writing the policy.

There is a fireplace that has been sealed up.+

Have it inspected instead of ignored. A sealed flue still passes through the building, may be unlined, and may hold debris or a nest. If you might reopen it later, knowing what is there now is far cheaper than discovering it during a renovation.

Will my insurer ask about this?+

Frequently, especially where there is a solid-fuel appliance. Some will want evidence of a compliant installation or a recent inspection. Having the report already in hand makes that a formality, not a delay after you have moved in.

The seller says it was swept last year.+

Ask for the documentation. A sweep is not an inspection anyway, so even a genuine sweeping record does not tell you the flue is sound. A useful data point instead of a substitute for having it looked at.

Can I use the findings to renegotiate?+

Between you and your agent, and a dated report with camera stills is considerably more persuasive than a verbal concern. The report's job is to state findings clearly enough that a third party can act on them.

What if the seller will not allow access?+

Itself information. Access to inspect the appliance and the flue is a reasonable request within a contingency period, and reluctance around a chimney is worth noting, not working around.

How long does a purchase inspection take?+

Longer than people expect on an older house, and considerably longer where there are several flues. Each flue is a separate assessment. Book with enough time in the contingency period that a scheduling problem does not become your problem.

Is it worth it on a house where the fireplace is decorative?+

Commonly yes, at least to establish what is there. A decorative fireplace still has a flue running through the house, and buyers frequently decide within a year or two that they would like to use it.