Mold in Walls & Drywall in Olalla, WA

Damp walls in a rural bay community

Olalla is a small rural South Kitsap community on Olalla Bay off Colvos Passage, with a lagoon at the foot of Olalla Valley Road. Kitsap County's sea level rise risk assessment identifies Olalla's wetlands as at risk of coastal flooding. Most houses here sit on wooded lots where shade, wet ground and long rainy seasons slow drying, and those conditions show up indoors on cold walls and in closed rooms. Homes heated mainly by a wood stove or a single heater often have back rooms that stay cool all winter, and those rooms are where condensation collects on outside walls and in closets. A musty smell there is worth checking early.

What to do now

1. Track down the water. Check the roofline and gutters above the wall, the window, any plumbing on the other side, and the grade outside.
2. Stop it where you can and keep that room warm and ventilated.
3. Skip bleach and paint; EPA advises against painting or caulking over mold, and bleach doesn't reach inside the wall.
4. Measure the visible area. Under about 10 square feet of surface growth is usually a homeowner job, per EPA; growth inside the cavity is not.
5. Photograph the wall and any damage before anyone cuts it open.
6. For rebuilding that involves framing or plumbing, contact Kitsap County's Department of Community Development about permits, since Olalla is unincorporated.

Signs table

Cost factors

Angi's Seattle cost guide reports a wall mold range of about $825 to $16,550, plus about $825 to $2,400 for drywall afterward. In Olalla, travel and access can matter along with the usual drivers: the size of the opening, damage to insulation and framing, containment, and the cost of fixing the water source. Ask for removal and rebuild priced separately and check the company on L&I's Verify a Contractor tool. Kitsap Public Health District's mold page covers general guidance.