Septic Inspection

Lilly’s Septic Inspection Services provides Septic Pumping & Inspection for your Home Sale in one convenient appointment!  Most pumping companies do not do the King County Home Sale Inspections,  therefore 2 or 3 different companies and appointments are needed to complete the inspection process… With Lilly’s everything is done all at once in one convenient appointment.  We are Certified O&M Professionals & Certified Pumping Professionals as well as we hold the King County Master Installers License for any repairs needed.

Every property that is serviced by an OnSite Septic System or OSS in King County & Pierce County must be Pumped and Inspected prior to Transfer of Title. The following information and links will help you prepare to sell a home in either King or Pierce County.

Sales and Transfers of Properties With Septic Systems in King County

Public Health- Seattle & King County requires all sellers of properties with onsite sewage systems (Septic Tank System) to have their on-site Septic Tank System inspected by a King County licensed On-Site System Maintainer (OSM). The inspection must be completed and a copy of the report must be given to both the buyer and Public Health before the transfer of title. The OSM must submit the property transfer report to King County environmental health through the Online RME System.  This is King Counties new reporting & public record system.

King County OSS Septic System Inspection filing/Permit fee is currently $220.00.  This fee will be included on the service invoice and is collected by our O&M Professional (Darren or Nathan) from the homeowner (or whoever is paying) and paid directly to King County – This is not a fee charged by Lilly’s Septic, this is a KC fee…… but we must have the funds prior to submitting  the O & M Sale Inspection Certification paperwork.

Find out more about Sales in King County: King County Real Estate Sale Inspection page

Seller Notice of On-site System Maintenance Requirements

Before closing sellers must record a Notice of On-site Sewage System Operation and Maintenance Requirements (OSSM) at the King County Recorder’s Office. This is also known as the Northwest Multiple Listing Service form #22U.

• Download the Notice of On-site Sewage System Operation and Maintenance Requirements (OSSM, 56 KB) (from our site)
• View the Guide for OSSM (179 KB) (from our site)

Buyer Responsibilities
At the time of property transfer, the buyer must submit the required Operation and Maintenance Program fee to Public Health. Visit Public Health’s portal to pay online. The buyer will receive information regarding good practices for maintaining septic systems.

*OSSM – is also known as Form #22U by the Northwest Multiple Listing Service (DOWNLOAD THIS FORM BELOW)

AS-BUILT DRAWING – An As-Built drawing is a diagram of the septic system and shows where the septic tank, Pump Tank (if there is one), the D-Box and drainfield lines are located as well as any other buildings such as sheds, garages, pools, etc on the property. King County requires that an As-Built is submitted with the OSS Inspection paperwork – If KC does not have an as-built on file that can be submitted, then Lilly’s Master Installer | Professional O&M must draw a Certified scale as-built drawing to be turned into KC with the paperwork. Fee applies and will be quoted (if necessary) at time of booking.

To check if there is an As-Built on file at the KC Health Dept. The As-Built lookup site is: KING CO AS-BUILT LOOKUP SITE.   If nothing is on file then request a copy of your as-built by calling the health department directly at 206-477-8050. OR Lilly’s septic (OSSM) Time Of Sale Inspection coordinator Anita or Rebecca will obtain the As-Built via email (If they find one) from KC Health Dept for no charge after booking your Inspection appointment. If there is no as-built available, the county will require us to draw a certified As-Built to submit with the inspection paperwork.

Downloadable Adobe format King County Forms:

• Notice of On-site Sewage System Operation and Maintenance Requirements (OSSM)
• Information Sheet for OSSM (where to record, what to do with copies, etc.)
• Sample copy of Buyer’s Declaration of Receipt of Copy Of Notice of On-site Sewage System Operation and Maintenance Requirements (OSSM)  –  SAMPLE ONLY!

• Septic Tank Pumping & Cleaning
• Real Estate Sale Inspections
  
• Septic System Pump Replacements
• Septic System Repairs (if needed)
• Drawing of Certified As-Builts
• Pump Alarm Calls & Pump Replacement
• Baffle & Riser Installation

• • MI 172 – McCullough, Darren
  • KC 106 – McCullough, Darren / Lilly’s Septic Service
  • OSM 64 – McCullough, Darren

Lilly’s Septic System Service can provide your Septic Tank Pumping & Inspection service all in one convenient appointment to sell your home in King County.

Since 1978, Lilly’s Septic Service has been synonymous with excellence in delivering top-notch septic tank services throughout King and Pierce Counties, WA. Led by our esteemed owner, Darren McCullough, a Certified Operation & Maintenance Professional, Septic System Pumping Pro, and Certified Master Installer in King & Pierce counties, we possess the expertise and dedication necessary to tackle all your septic tank problems head-on. At Lilly’s Septic Service, we take great pride in offering an extensive range of services that cater to all your septic tank needs. 

Whether you require septic tank pumping, septic tank cleaning, electronic septic tank lid locating and digging, home sale inspections, O&M Contracts and septic system maintenance, pump alarm calls, or pump replacements, we have you covered. Our commitment to excellence ensures that each service we provide is executed with the utmost precision and care. We want to emphasize that while we don’t offer plumbing services, our comprehensive range of septic tank solutions encompasses everything you need for a smooth-running septic system. 

Conveniently located at 26207 Maple Valley Black Diamond Rd, Maple Valley, WA, 98038, we are your go-to destination for all your septic tank requirements. Don’t hesitate to contact us today at (425) 432-3084 to schedule an appointment or inquire about our offerings.