One supply, three flats, and the letter downstairs
The property
An Edwardian house divided into three flats. One supply pipe from the pavement serves all three, branching under the communal hall; each flat has its own stop tap.
The problem
The ground floor leaseholder, named on the bill, received a letter about constant use. No flat showed any damp, and the freeholder was asked to sort it out.
How we found it
We shut each flat's stop tap in turn; with all three closed, the meter still turned, so the shared length was leaking. Listening on the hall boards found a peak, and tracer gas rose there.
The outcome
A single board was lifted at the mark and the cracked fitting remade, quoted separately. The freeholder sent the report to all three flats.