Bloomfield Hills Septic Inspection Rules for Home Sales

Picture a two-acre lot in Bloomfield Hills, the kind of property that shows up in listings with mature oaks, a long gravel drive, and enough setback that you can't see the neighbors. The house needs work. The land does the selling. Somewhere under that lawn sits a septic tank that may not have been opened in fifteen years, and no septic inspection is required before the sale closes.

The City of Bloomfield Hills says this plainly on its own website. A home inspection is not required to sell a house here, and a buyer may arrange one through a third party if they want one. According to Kovalak Septic Service, Oakland County has never adopted the kind of ordinance that would change that. In a city known for manicured setbacks and six-figure lot premiums, the distinction between public sewer service and private septic systems is worth understanding.

Homes Outside the Municipal Sewer System

The city's own website maintains a resident page dedicated to on-site septic systems, walking homeowners through failure symptoms like pooling water, backed-up drains, and strips of unnaturally green grass over the drain field, and pointing them to the Oakland County Health Department for a list of licensed inspectors. A city doesn't publish a guide like that unless a meaningful share of its housing stock depends on one.

The city takes its own municipal sewer lines seriously. Its environmental services page describes state and federal mandates that require Bloomfield Hills to inspect and rehabilitate the sanitary sewer system it owns, work the city has contracted out to engineering and utility crews who show up street by street and easement by easement. The city's sewer work applies only to homes already connected to the municipal system. Properties on septic systems are outside that sewer program.

A Disclosure Form Records Memory, Not Test Results

Michigan does require something here, just not an inspection. The Seller Disclosure Act, MCL 565.957, obligates every seller of a one-to-four unit residential property to fill out a form describing the well and septic system's condition "if known." That phrase carries the whole transaction. Sellers answer from memory and paperwork they happen to have. Nobody requires them to hire an inspector first.

That distinction has already been tested in Michigan courts. According to Thompson Law PLC, in Pilcher v. Benoit, a buyer didn't discover a hazardous septic tank cover until after closing, when they fell over it while working in the backyard. The Michigan Court of Appeals didn't rule that the seller had to have known. It ruled that a jury needed to decide whether the seller actually did, based on testimony from a former tenant who said the condition had been known for some time. The case turned entirely on memory and disclosure, because there was no inspection report to settle the question either way.

A disclosure statement is a snapshot of what someone remembers. It isn't a test of what's actually in the ground.

What Changes When There's No Ordinance to Trigger

As of March 2026, the Huron River Watershed Council counted eleven Michigan counties and seven townships or villages that had adopted some version of this ordinance. Oakland was not one of them. That means buyers may need to take the initiative to find out whether a system works, rather than relying on a time-of-sale check by the local health department.

A Statewide Septic Code Proposal Is Advancing

There is movement at the state level. According to FLOW Water Advocates, Senate Bill 771, introduced by Sen. Sam Singh in January 2026, would establish Michigan's first statewide septic code. As of its most recent recorded action, the Senate Natural Resources and Agriculture Committee voted along party lines in June 2026 to send the bill to the full Senate floor, according to Michigan Advance. It has not yet passed the Senate or the House.

Even in the best case for supporters, the bill wouldn't help anyone closing on a Bloomfield Hills property this year or next. If it passes, Michigan's environmental agency gets three years just to write the actual statewide code. Evaluations would then begin with the highest-risk systems, those more than twenty years old and within 500 feet of surface water, before rolling into a routine ten-year inspection cycle for everyone else. In March 2026, the Huron River Watershed Council pushed back on that timeline as too slow, arguing some homes could go decades longer without ever being checked. Whatever the final version looks like, it changes nothing for a purchase agreement signed this fall.

What This Actually Means If You're Closing on a Well-and-Septic Property

None of this is a reason to walk away from a Bloomfield Hills estate that happens to be on septic. It's a reason to build the inspection into your own process instead of assuming someone else already did.

• Order a private septic and well evaluation during your inspection contingency. A pump-out and inspection typically runs $300 to $600 in the Oakland County area, more if the drain field needs to be probed for saturation.
• Ask for the septic permit file before you waive anything. Oakland County's Health Division keeps permits and inspection records on file for 18 years, and that record can often tell you the tank size and install date even when the current owner has no idea.
• Check the setback if the property runs both a well and a septic system. Michigan requires at least 50 feet between a well casing and a septic tank or distribution box, and 25 feet from a percolation trench, according to Pure Water Filtration MI.
• Read what the disclosure form doesn't say. A blank field where a pumping date should be is information on its own, not a formality to skip past.

Sellers benefit from the same logic in reverse. A pre-listing septic inspection gives the seller a paper record about the system. It also gives a seller room to negotiate a fair price adjustment before a buyer's inspector finds the problem first.

A Few Questions We Hear Often

Does Bloomfield Hills require any inspection before a home sale closes? No. The city states directly that no inspection is required to sell a home, and Oakland County has not adopted a time-of-sale septic ordinance the way some Michigan counties have.

If a septic problem shows up after I close, do I have any recourse? It depends entirely on what the seller actually knew and disclosed. Michigan's Seller Disclosure Act protects sellers who answer honestly based on their own knowledge. It does not protect a seller who knew about a defect and left it off the form, which is the exact question that went to a jury in Pilcher v. Benoit.

Will the new state septic bill affect my purchase this year? Not directly. Senate Bill 771 has advanced out of committee but has not passed the full legislature, and even if it becomes law, the statewide code and inspection schedule would take years to phase in.

Buying an estate on well and septic in Bloomfield Hills is still one of the strongest long-term plays in Oakland County, but it rewards buyers who treat the absence of a rule as a signal to do more, not less. The Madelon Collective works these transactions regularly and knows which inspections actually matter on a property like this. If you're ready to look at what's available, start your home search with a team that can help you consider inspections for a property like this.

This article is general information, not legal, tax or financial advice. Consult a qualified professional about your situation.