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Thurston County time-of-transfer country

Olympia septic help, built around the transfer rule

Sell a septic-served home in Olympia and the closing file gains a document most Washington sellers have never heard of. Thurston County has required a Time of Transfer Evaluation Report before a septic-served property sells or transfers since September 1, 2010, and the office that issues it, the Thurston County Environmental Health Division, sits at 3000 Pacific Ave SE, Suite 225, right in Olympia, per the county's Time of Transfer fact sheet (PDF). Here is how the rule works, where the paperwork goes, and what the required work costs in published figures.

How the Time of Transfer works on an Olympia sale

The county fact sheet lays out the sequence. All components of the system must be inspected by a Thurston County certified pumper, monitoring specialist, or installer, and all tanks must be pumped by a certified pumper, each within the 12 months before the application. The county reviews the results and issues the Time of Transfer Evaluation Report, valid for one year. The exceptions are narrow: a permitted system under 12 months old, a foreclosure, sheriff's sale, court transfer, gift, or inheritance, a single mobile home in a mobile home park, a STEP system connected to city sewer, and large systems over 3,500 gallons per day, which the state regulates directly.

A failing result is not a dead deal. The county states it does not prohibit property sales; instead, a failing system triggers compliance follow-up and can bring a Notice of Violation, which is how a septic repair ends up negotiated into an Olympia closing. The full mechanics, county by county, are in the Washington time-of-sale septic guide.

The program office is a local errand

Olympia sellers have one small advantage: the program is administered from their own city. Applications go through the Building Development Center at the same 3000 Pacific Ave SE address as the Environmental Health Division, and a county fee applies, with the current amount available from the county office. This is routine work for the county: its November 2025 on-site sewage management plan update (PDF) estimates the division manages roughly 55,400 on-site sewage systems. The trigger follows the system, not the address: homes on city sewer sit outside the program, and the on-septic rings and rural roads around Olympia are where it fires.

One more document can enter the picture. Systems in the county's watershed protection areas carry a renewable operational certificate, and the fact sheet says a seller must show that certificate is current before submitting the Time of Transfer application. That requirement lands hardest in the northeastern part of the county, toward Lacey, where the watershed protection areas sit.

Published local figures for the required work

No agency fixes the price of the inspection or the pumping, but contractor-published Thurston County figures give an anchor. The Clean Septic Pumping price list, which covers Thurston County, shows a routine inspection at $175 for a gravity system or $225 for a pressure system, plus $85 if pumping is not done at the same visit, and Thurston pumping at $535 plus a $25 county pump report fee. The Premier Septic Services price list, from Yelm, shows an inspection at $95 when performed with pumping and Thurston pumping at $600 plus $25 for tanks to 1,200 gallons, with larger or overfull tanks adding $0.50 per gallon.

Since the program requires both tasks, those lists together are the working budget, plus the county's application fee. More detail sits under septic pumping and time-of-sale inspection.

Selling on septic in Olympia?

Tell us your timeline. A professional certified for Thurston County Time of Transfer work handles the component inspection and the tank pumping the report needs, and the quote is free. You choose who to hire, and the referral fee never changes your price. Here is how we make money.

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Questions homeowners ask

Do I need a septic inspection to sell my Olympia house?
If the home runs on a septic system, in most cases yes. Thurston County’s Time of Transfer fact sheet says the county must issue a Time of Transfer Evaluation Report before a septic-served property sells or transfers. Exceptions include a permitted system under 12 months old, foreclosures and court transfers, gifts and inheritance, and STEP systems connected to city sewer.
Where does the Time of Transfer application go in Olympia?
To the Building Development Center at 3000 Pacific Ave SE, Suite 225 in Olympia, the same address as the Thurston County Environmental Health Division that runs the program, per the county’s Time of Transfer fact sheet. A county fee applies; the fact sheet does not fix the amount, so confirm the current figure with the county office.
How early should an Olympia seller order the inspection?
At listing, not at closing. The county fact sheet says the component inspection and the tank pumping must each happen within the 12 months before the application, and the finished report is valid for one year. Ordering early costs nothing extra and keeps a slow sale from outliving its paperwork.
What if the system fails the transfer inspection?
The sale can usually still happen. Thurston County states in its Time of Transfer fact sheet that it does not prohibit property sales, but a failing system triggers compliance follow-up and can bring a Notice of Violation. In practice, buyer and seller negotiate who handles the repair and when the work gets done.

What it costs, and what happens after you send it

What does repair or replacement cost in Olympia?
It depends on which job, so here they are separately. Sterling Septic and Plumbing (a Puyallup contractor publishing its own replacement guide) puts $1,000 to $5,000 and beyond for extensive repairs such as tank replacement or drainfield restoration, and roughly $5,000 to $7,000 and up for a conventional gravity system, with a full installation able to pass $15,000. Where a real quote lands is decided by the system type, the soil and water table, access for a truck or an excavator, and whether the design has to move from gravity to pressure. A pressure or mound system sits well above a conventional gravity one. The Washington time-of-sale guide sets the published figures out in one table.
How fast will someone get back to me?
Your request goes to an independent local septic contractor, usually within about an hour during the day. That contractor then contacts you to look at the system and price the work on their own schedule.
What work is covered?
Septic installation, septic repair, septic pumping, septic inspection, time-of-sale inspection, and operation and maintenance. See every service.

Only a contractor standing at your tank and drainfield can price your actual system.

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