Tumwater, Olympia & Lacey
The dense core of our coverage, and the addresses that see the fastest response. The housing splits roughly by age. Older homes near the Tumwater Brewery District, around Tumwater Hill, and through Olympia's older neighborhoods run aging supply lines, shallow crawlspaces, and site drainage designed for a good deal less impervious surface than the area has today. Newer construction out through Bush Prairie, the Littlerock Road corridor, and the Lacey side is tighter and better insulated, which is an advantage right up until moisture gets inside the envelope, at which point it has nowhere to go and dries very slowly.
What both have in common is the crawlspace. The great majority of homes in this area sit on a vented crawl, which is the lowest point in the building, so it collects water from any plumbing failure above it and takes on groundwater from outside through the wet half of the year. It is the first place we look and the place most often skipped by whoever came before us.