Should I Inspect a Chimney Before Buying a House?
NFPA 211 calls for a Level 2 inspection on sale or transfer, and a general home inspection is not built to do one. Here is the difference.
Reviewed by John Freeman, chimney and fireplace professional with 20+ years of field experience.
Last updated
Short Answer
Yes. Before buying a home with a fireplace or wood stove, have the chimney and fireplace inspected by a chimney specialist. NFPA 211 calls for a Level 2 inspection on sale or transfer of a property, and the Chimney Safety Institute of America (CSIA) recommends the same. A general home inspection is not designed to do that: the American Society of Home Inspectors (ASHI) standard does not require the inspector to look inside flues that are not readily accessible, determine draft, or move inserts, stoves, or firebox contents.
What a General Inspection Covers and What It Leaves
| Feature | General home inspection (ASHI standard) | Level 2 chimney inspection (NFPA 211) |
|---|---|---|
| Fireplaces, stoves, inserts, and chimneys | The inspector inspects them and describes what is visible. | Includes all accessible parts of the chimney exterior and interior, including accessible attics, crawl spaces, and basements. |
| Inside the flue | Not required if the interior is not readily accessible. | Includes examining all flues and flue liners with image scanning or more advanced viewing equipment. |
| Draft, flue size, and lining | Not required to determine draft characteristics. | Includes evaluating the type of flue lining and the flue size against the connected appliance. |
| Inserts, stoves, and firebox contents | Not required to move them. | Inserts, stoves, or accessories are removed as necessary to examine the fireplace, unless the venting system can be thoroughly cleaned without removal. |
| Overall scope | The standard says inspections are not technically exhaustive. | Designed for verifying a chimney is suitable for continued use under new conditions of service. |
What a Pre-Purchase Chimney Inspection Can Find
A chimney inspection before purchase looks for:
- Cracked, offset, or missing flue tiles, or no liner at all
- Creosote or blockage in the flue
- Clearances to combustible framing that do not meet the standard
- Water entry through the crown, cap, flashing, or masonry
- A cracked or deteriorated firebox
- Signs of an earlier chimney fire
Earlier Chimney Fires
An earlier chimney fire is the one item on this list a buyer cannot spot alone. CSIA says the majority of chimney fires go undetected, and that slow-burning fires can reach very high temperatures and damage the chimney structure without anyone noticing. An inspection looks for the evidence they leave behind.
Questions for the Seller
- When was the chimney last swept or inspected, and is there a receipt?
- Has there ever been a chimney fire?
- Was a stove or insert installed, and by whom?
- Has any chimney, roof, or flashing work been done?
Other Appliances on the Same Chimney
A chimney does not serve only fireplaces. CSIA recommends yearly inspection of gas-heated chimneys too, because bird nests or other debris can block the flue, and modern furnaces can have problems when they are vented through flues intended for older furnaces. If a furnace or boiler shares the chimney, ask that it be included. CSIA also notes that in a tight house, carbon monoxide can be drawn back down a furnace chimney.
Timing and What You Do With the Findings
Book the inspection early in your inspection period so there is time to act on the findings. You receive photos, findings, and a clear explanation of any issues. That tells you whether you are walking into a routine sweep or a repair, so you can ask the seller to address it, ask for a credit, or plan the work yourself. Repair costs are quoted in writing after the inspection rather than guessed in advance. Wood stoves and inserts are also covered by local rules in some places, so ask your agent or the local authority what applies to the home you are buying.
Next Step
The inspection is $99, and the full fee is credited toward qualifying work of $349 or more if you go ahead with it. We coordinate with buyers, sellers, and realtors to schedule around transaction timelines. Serving Southern Oregon. If you tell us the property address and the closing timeline, we can confirm what scope fits.
Sources
- NFPA 211: Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning Appliances
- NFPA 211, Chapter 15: Inspection of Existing Chimneys (committee input for the next edition)
- CSIA Standard Operating Procedure: Level 2 Inspection, Masonry Chimney
- American Society of Home Inspectors: Standard of Practice
- Chimney Safety Institute of America: Preventing Chimney Fires
- Chimney Safety Institute of America: Homeowner FAQs
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