A Time of Sale (TOS) inspection—sometimes called a Point of Sale (POS) evaluation—is a legally mandated check of a property's private water supply or wastewater treatment system. These evaluations must be performed by a county-certified inspector before a real estate property transfer or home sale can close.

Advanced Well and Septic Inspections is fully certified and approved to perform these mandatory evaluations for the following local health departments and municipalities:

• Washtenaw County: Mandated by the Environmental Health Division for all residential properties with an on-site well or septic system. Authorized approvals are valid for exactly one year.

• Wayne County: Required for properties utilizing private on-site sewage disposal systems to ensure environmental and safety compliance before closing. Wayne County requires a point-of-sale inspection and requires the septic tank to be serviced at the time of the inspection.

• Commerce Township: Mandated by local municipal ordinances for all residential septic systems prior to a property transfer or sale.

• Ingham County: Mandated by the Ingham County Environmental Health Department. Requires full well and septic inspections prior to title transfer, including mandatory testing for coliform bacteria, nitrates, and arsenic

• West Bloomfield Township: Required by local municipal guidelines to evaluate and verify septic system integrity before a real estate transaction is completed.

We specialize exclusively in independent, unbiased testing. Because we do not perform septic repairs or drill wells, we have zero conflict of interest. Our only goal is to provide a fast, accurate assessment and quick lab turnarounds to keep your real estate transaction on schedule.

Advanced Well and Septic Inspections provides certified, independent Time of Sale (TOS) well and septic system evaluations throughout Southeast Michigan. Our certified service footprint covers residential property transfers mandated by the Washtenaw County Environmental Health Division, Ingham County, Wayne County Health Department, Commerce Township municipal guidelines, and West Bloomfield Township ordinances.

Washtenaw County requires residential well and septic systems to be evaluated by a county-certified inspector before a property can be sold. Approvals remain valid for 12 months, making it highly recommended to complete the evaluation before listing the home.

Advanced Well and Septic Inspections performs all inspections in full compliance with the specific requirements set by each local authority, ensuring the process is handled properly and efficiently. Time of sale inspector providing certified Time of Sale (TOS) well and septic inspections throughout Washtenaw County Including, Ann Arbor Township, Augusta Township, Bridgewater Township, Dexter Township, Freedom Township,Lima Township, Lodi Township, Lyndon Township, Manchester Township, Northfield Township, Pittsfield Township, Salem Township, Saline Township, Scio Township, Sharon Township, Superior Township, Sylvan Township, Webster Township, York Township, and Ypsilanti Township

• Completion of all required inspection forms and documentation

• Submission of results as required by the local authority

• Clear communication with homeowners, buyers, and real estate agents

• Guidance on next steps if any issues are identified

Commerce Township Inspector

Commerce Township requires a Time of Sale Septic Inspection before the transfer of any property served by a private septic system. The inspection must be completed by a registered Commerce Township septic evaluator, and the completed inspection form must be submitted to the Township as part of the property transfer process.

The required inspection report is limited to the items specified by the ordinance and is not intended to provide a comprehensive evaluation of the septic system's overall condition, maintenance history, or potential future concerns.

Wayne County requires a point-of-sale inspection and requires the septic tank to be serviced at the time of the inspection.

We perform all inspections in full compliance with the specific requirements set by each local authority, ensuring the process is handled properly and efficiently.

• Completion of all required inspection forms and documentation

• Submission of results as required by the local authority

• Clear communication with homeowners, buyers, and real estate agents

• Guidance on next steps if any issues are identified

Our Recommendation

While the Time of Sale inspections are required, it is important to understand that it is designed to satisfy the Township's ordinance and may not provide the level of detail a buyer or seller wants about the overall condition of the septic system.

At Advanced Well and Septic Inspections, we perform a thorough evaluation that not only satisfies the Township's requirements but also helps homeowners, buyers, and real estate agents better understand the condition of the system. Our goal is to educate our clients, clearly explain our findings, and identify potential concerns before they become costly surprises.

We also provide:

• A detailed written report with photographs

• Septic system location sketch

• Clear explanations of our findings and recommendations

• Guidance throughout the Township approval process

• Prompt communication with homeowners, buyers, sellers, and real estate agents

After the inspection is completed, we submit the required documentation to the county or township for review. They then issue the official determination regarding the property's compliance with the ordinance.

Advanced Well and Septic Inspections is certified to perform Time of Sale inspections in:

• Washtenaw County

• Wayne County

• Commerce Township

• Bloomfield Hills

• https://health.ingham.org/health/environmental_health/well_and_septic.php