Chimney inspection levels, explained: Level 1, 2, and 3
"Inspection" can mean a flashlight and five minutes, or scaffolding and demolition. NFPA 211 defines three specific levels so you always know which one you're getting — and which one your situation actually calls for.
Level 1 — the annual checkup
When it applies: nothing about your system has changed — same appliance, same fuel, same way you've always used it — and there's no reason to suspect damage.
What we examine: all readily accessible portions of the chimney — firebox, damper, the flue from below, exterior masonry from the ground, and the connections to the appliance. We verify the flue is free of obstruction and combustible deposits, and that the basic structure is sound.
This is the inspection that pairs with a routine sweep, and it's the yearly minimum NFPA 211 recommends for every chimney — even ones that rarely see a fire.
Level 2 — the change-of-conditions inspection
When it's required:
- A property is being sold or transferred (this is the inspection home buyers should insist on — general home inspectors typically only glance at the chimney).
- Something about the system changed: a new liner, a different fuel type, a new stove or insert, or changes to the appliance's rating.
- Something happened: a chimney fire (even a suspected one), a lightning strike, an earthquake, severe storm damage, or a building fire nearby.
What we examine: everything in a Level 1, plus accessible areas of attics, basements, and crawl spaces — and a video scan of the full flue interior, top to bottom. The camera is the point: cracked flue tiles, gapped joints, and hidden creosote glaze are invisible from the firebox, and they're exactly what a chimney fire leaves behind.
No demolition, no special tools beyond the camera — a Level 2 doesn't open walls. You get a documented report with footage stills, suitable for realtors, insurers, and lenders.
Level 3 — the investigative inspection
When it applies: a Level 1 or 2 turned up evidence of a serious hidden hazard that can't be confirmed any other way — say, suspected damage inside a chase wall after a chimney fire.
What it involves: everything in a Level 2, plus removal of components — chase covers, interior walls, sections of masonry — where necessary to reach the concealed area. It's the only level that's invasive, it's rare, and it's never a surprise: a Level 3 is always recommended in writing first, with the specific evidence that justifies it.
Burning as usual? Level 1, yearly. Buying, selling, changing equipment, or recovering from an event? Level 2. Level 3 only ever follows evidence from the first two — be wary of anyone who leads with it.
What to expect from an On Spot inspection
Whichever level your situation calls for, the visit works the same way: we tell you which level we're performing and why, protect the work area, document everything with photos (and video for Level 2), and walk you through the findings on the spot. The written report lands in your inbox before we leave — findings, photos, and recommendations in plain English.
Closing on a house this month? Level 2 inspections are one of the most time-sensitive things we do — and one more reason our Kansas City, Dallas, and Chicago offices book 24/7.