A seller in Livingston County learns, usually from an agent or a title company, that the home can't change hands until the septic system passes a Time of Sale evaluation. The natural next step is to call the Livingston County Health Department and ask them to come out and look at the tank. The answer, printed plainly on the county's own environmental health pages, is no. The department that wrote the sanitary code and enforces the rule does not send an inspector to your property for a home sale. That job belongs entirely to the private market.

This is the part most sellers don't find out until they're already scrambling. The rule itself, a mandatory septic evaluation completed within 24 months of the transfer date, isn't the obstacle. The obstacle is that satisfying it means finding, scheduling, and paying a private licensed inspector on your own timeline, at exactly the point in a transaction when your timeline stops being fully yours.

Why Michigan Doesn't Give You One Answer

Michigan is the only state without a statewide septic code. Instead, 45 local health departments each write and enforce their own sanitary rules across the state's 83 counties, working from a baseline set in Part 117 of the state's public health code but layering on local requirements from there. That means the septic rule that applies to a house in Howell can differ from the rule that applies to a house an hour away, and it means there's no single government office anyone can call for a statewide answer. Livingston County's Environmental Health Division is the authority for Livingston County parcels. Nowhere else.

That fragmentation shows up in smaller ways too. The Livingston County Building Department holds permitting authority for the entire county except Green Oak Township, which runs its own building department. If the county can't even centralize building permits across its own townships, it's worth assuming nothing about how a given process works until you've confirmed it for your specific address.

What the County Actually Requires

Livingston County's Point of Sale program requires an evaluation of the septic system, covering the tank and the drain field, completed within 24 months before the property transfers. The county's Environmental Health Division administers the program and investigates complaints about failing systems, but the office is direct about where its role ends.

"We do not offer inspection services to homeowners or real estate agents."

That line appears on the county's own septic permitting page. It isn't a gap in customer service. It's a structural separation between the agency that sets the standard and the private inspectors who verify compliance against it.

Who Actually Shows Up

In practice, sellers hire one of several private companies licensed to perform Time of Sale evaluations in the county. Names you'll come across include TNT Inspection Services, which is certified for Washtenaw County's Time of Sale program and also performs well and septic work in Livingston, Advanced Well and Septic Inspections, based in Livingston County and serving Howell, Brighton, Pinckney, and Hamburg, and longer-running septic service companies like D&J Septic Services and Bolton Environmental, the latter operating in the county since 1967. None of these are county employees. All of them run their own scheduling calendars, which matters more than it sounds.

Here's roughly what the process costs, based on typical ranges across Michigan's Time of Sale evaluations:

If the system fails, the numbers change fast. Tank replacement typically runs $3,000 to $7,000, drain field repairs commonly land between $5,000 and $15,000, and a full system replacement on a difficult site can push past $20,000. A failing result doesn't automatically kill a sale, but it does move the negotiation from price to repairs, and that conversation goes better when it happens before an offer is on the table rather than during a closing countdown.

The Timing Trap

Livingston County homes sold in an average of 26 days over the three months ending April 2026, according to Redfin's market data, up from 16 days over the same period the year before. Homes are still moving quickly by historical standards, even with that slowdown. If a seller waits until after accepting an offer to schedule a private Time of Sale evaluation, and the inspector they call is booked out even a week or two, that scheduling delay can eat a meaningful share of an already-short closing window. Ordering the evaluation before listing, not after going under contract, is the difference between a clean timeline and a renegotiated closing date.

Wells Aren't Automatically Part of the Same Check

One distinction worth knowing before you assume your whole system is covered: Washtenaw County's Time of Sale program explicitly evaluates both the septic system and the well together at transfer. Livingston County's mandated evaluation, based on how the county and area inspectors describe it, centers on the septic system. Well water testing in Livingston more commonly comes in through the lender's side of the transaction, since FHA, VA, and USDA loans typically require testing for total coliform, nitrate, and lead before closing, rather than through the county's own ordinance. If you're selling a well and septic property here, don't assume one appointment handles both. Ask specifically what your buyer's loan program requires for water testing, separate from the septic evaluation the county mandates.

Why This Keeps Coming Up in Livingston County

This isn't a rare wrinkle limited to old farmhouses. Livingston County's growth has continued to convert farmland around Howell, Brighton, Hamburg, and Pinckney into new subdivisions, and outside the small city water and sewer systems, a large share of that new construction still goes in on private wells and septic rather than municipal service. That means the Time of Sale requirement isn't something only a handful of legacy properties run into. It's a routine part of selling a meaningful slice of the county's active inventory, new construction included.

Before You List

1. Confirm with your agent or the Livingston County Environmental Health Division, at (517) 546-9858, whether a Time of Sale evaluation applies to your specific parcel.
2. Gather any permits, as-built drawings, or prior evaluation reports you have on file. Environmental Health Specialists conducted an inspection during the system's original installation, and that record can save your private inspector time and you money.
3. Contact a licensed inspector well before you plan to list, not after you accept an offer.
4. Ask your inspector directly what the base fee covers and whether pumping and any excavation are included or billed separately.
5. If you're financing through FHA, VA, or USDA, confirm well water testing requirements with your lender in parallel, since it may run on a different track than the septic evaluation.

A Few Questions Worth Settling Early

Does this apply if my home is on municipal sewer? No. The Time of Sale requirement applies to on-site septic systems. Homes connected to municipal sewer service aren't subject to this evaluation.

How long does a passing evaluation stay valid? In Livingston County, an evaluation completed within 24 months of the transfer date satisfies the requirement. If your sale takes longer than expected and that window closes before you get to the closing table, you'll need a new evaluation.

Who usually pays for it? In counties where the evaluation is county-mandated, the cost typically falls to the seller, though this can be negotiated as part of the purchase agreement like any other closing cost.

If you're weighing a move in Livingston County, on either side of the transaction, the details above are exactly the kind of thing that's easy to miss from a listing photo and expensive to discover late. The Faeth Team works with buyers and sellers across Howell, Brighton, Hamburg, Pinckney, and the rest of the county, and we can walk through what a Time of Sale evaluation looks like for your specific address before it becomes a deadline. Get your free home valuation and let's talk through the timeline together.