Washington requires an inspection when a property on septic changes hands. In Kent 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 Kent 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 Kent is close to a complete count rather than a sample. Between 2015 and 2025, 2,922 sale inspections were filed here and 26.0% of them found a problem. Across King County, 24.5% of sale inspections filed between 2015 and 2025 found a problem. That puts Kent higher than the county as a whole.
| Sale inspections in Kent, 2015 to 2025 | Figure |
|---|---|
| Sale inspections filed | 2,922 |
| Found a problem | 26.0% |
| Could not be completed | 12.7% |
The second figure is about access rather than condition. 12.7% of sale inspections in Kent 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 Kent, 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 Kent, see our Kent page.
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