Property types
Bathroom plumbing in a maisonette
The short answer
Maisonettes typically span two floors within a larger block, and the bathroom's waste connection depends heavily on whether it sits on the entry level or the upper floor of the unit. Shared structure with neighbouring maisonettes above or below means any change to pipe routes needs checking against what is directly overhead or underneath, not just within your own unit.
What the building imposes
An upper-floor bathroom in a maisonette usually drops waste down through the floor to connect with a stack shared with the maisonette below, so timing of noisy work is worth agreeing with neighbours.
Communal or shared soil stacks serving several maisonettes mean a blockage can sometimes originate outside your own unit, so it helps to know where the nearest inspection point is before assuming a fault is internal.
Structural floors between levels in a maisonette are usually concrete, which limits where new pipe runs can be chased compared with a timber-floored house.
Frequently asked
Who is responsible for a shared stack in a maisonette block?
This depends on the lease and management arrangement for the block, and is worth checking before commissioning any work on a stack serving more than one unit.
Can an en-suite be added to a maisonette bedroom?
It depends on where the existing stack runs relative to the bedroom and whether the concrete floor structure allows a new waste connection to be formed.
Want this scoped properly before you commit?
We look at the room, check the services, and put the scope in writing so you can compare like with like.