
Three households, one chimney. Who has actually seen inside it?
- A triple-decker or multi-family with one shared masonry stack
- Each unit assuming another unit's landlord handles it
- Smells or damp in one unit with no visible cause in that unit
Why it happens in Massachusetts: The triple-decker, New England's great housing invention, means one masonry stack serving three households' flues. A fault in the shared masonry is invisible from any single unit and owned by everyone at once, which is why the only meaningful inspection covers every flue in the stack.
What fixes it, and what it costs
The only inspection that means anything on a shared stack covers every flue in it, whichever floor each serves. A breach between flues or one abandoned flue taking water affects all three households while being invisible from any one of them. One camera visit answers it for the whole building, and the report gives owners the shared facts to act on.
- Level 1 with an annual sweep
- $0 — included
- Level 1 on its own
- $100–$180
























