
A party-wall chimney: whose problem is it, and where does it start?
- A rowhouse stack on or beside the shared wall
- Damp or smells that might be yours, or the neighbour's flue
- Parapet masonry aging differently on each side of the line
Why it happens in New York: Downstate, party-wall stacks on brownstone and rowhouse blocks serve multiple flues and hide their faults in shared masonry. Upstate is snow country with some of the heaviest lake-effect totals in America. The state page can only say: which New York you are in decides everything.
What fixes it, and what it costs
Diagnosis starts with mapping what the stack actually serves: flues from two houses sharing one chimney is normal in rowhouse stock, and the answer surprises owners on both sides of the wall. The camera establishes whose flue does what and where the fault sits; the repair follows the finding, and so, fairly, does the bill.
- Level 1 with an annual sweep
- $0 — included
- Level 1 on its own
- $100–$180























