Washington requires an inspection when a property on septic changes hands. In Bothell that means a property transfer inspection, filed with Public Health, Seattle & King County. It is waived if one was already carried out in the previous twelve months and the property has not changed hands since, so an inspection you had for maintenance reasons can sometimes count.
We are a certified operation-and-maintenance firm in both King and Pierce County, so an inspection we carry out in Bothell is one that can be filed. If it finds a problem, the technician who found it will set out your options and what each one costs before you decide anything, which is the part that matters when there is a closing date attached.
Sale inspections are filed with the county health department, so the record for Bothell is close to a complete count rather than a sample. Between 2015 and 2025, 138 sale inspections were filed here and 23.9% of them found a problem. Across King County, 24.5% of sale inspections filed between 2015 and 2025 found a problem. That puts Bothell lower than the county as a whole.
| Sale inspections in Bothell, 2015 to 2025 | Figure |
|---|---|
| Sale inspections filed | 138 |
| Found a problem | 23.9% |
| Could not be completed | 12.3% |
The second figure is about access rather than condition. 12.3% of sale inspections in Bothell could not be completed, because a lid, a tank or part of the drainfield could not be reached and had to be recorded as not evaluated. That is low by regional standards, but it is still worth avoiding: across both counties, inspections that cannot see everything fail more than twice as often as ones that can.
Having the lids located and exposed before the inspector arrives is the simplest way to make sure the report reflects your whole system.
The single most useful thing a seller can do is book early. Of sale inspections that failed across the two counties, about a third were resolved within 30 days and the median took around eight weeks, which is longer than most closing windows. A problem found before you list is a repair. The same problem found once you are under contract is a negotiation, and sometimes a collapsed sale.
Call (253) 364-7416 to book a sale inspection in Bothell, or to ask which report your address needs.
The full regional picture, including how long a failed inspection holds up a sale and which towns fare worst, is on our property sale and transfer inspections page. For everything else we do in Bothell, see our Bothell page.
A Bothell homeowner had dug out part of the tank before we arrived, but the lid to the second compartment was still buried. Our technician excavated it to reach the whole two-compartment tank, and approximately 1,500 gallons were pumped.
Most residential septic pumping appointments take roughly 30 minutes to two hours, but the actual time depends on the tank size, how easy the tank is to reach, its condition, and how much has built up inside it.
Many Charmin products break down with water and suit a well-maintained septic system, but the product, the amount used and the condition of your tank all matter. What to look for, why flushable wipes are a different question, and when the paper is not the real problem.
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