Old brownstones with mixed plumbing and uneven pressure due to layered renovations.
Large homes with complex internal plumbing from decades of modifications.
Historic preservation limits interior updates; many homes still have aging risers and pipes.
Wide range of renovation quality; plumbing conditions vary block to block.
Partial renovations reveal legacy pipes and outdated drainage systems.
Mid-level renovations; many multi-family conversions stress old plumbing.
