Restoration help in Northwest Portland

Northwest Portland is two different cities stacked on one another. The flats hold the densest housing in the metro: NW District apartments and courtyard buildings, Pearl and downtown-edge condos, older multifamily with shared walls and unit-above leaks. Where the flats end the West Hills begin, and the problem flips to slope: runoff, retaining-wall drainage, daylight basements, and long driveways the equipment has to climb.
The buildings
On the flats, the calls are multifamily patterns: a leak from the unit above, a washer overflow that reached the hallway, a basement level in a 1920s apartment building. In the hills, it's single-family with water arriving from uphill: through foundations, under doors, into the lowest level.
The water
Hillside water moves downhill through soil and landscape before it reaches a drain, so hillside homes see seepage that a flat lot never does. Flats-side buildings see the neighbor's water. Both are routine scopes; the difference is who else is involved.
The callback
For multifamily, say the building type and whether another unit or an HOA is in the picture. For the hills, say where the water came in: wall, floor, or downhill door.
Coverage
The NW District, the Pearl edge, Forest Park's fringe, Sylvan-Highlands, the West Hills neighborhoods, and down to the Sauvie Island bridge landing.