Forty-five calendar days sounds generous until the relinquished property closes on a Friday before a holiday weekend and the investor still needs a written, signed identification in the hands of the qualified intermediary by day forty-five, no extensions, no exceptions for weather or geography.
Why the Same Clock Feels Different Region to Region
Forty-five days in Ann Arbor, where biotech and medical office space near the university hospital system turns over quickly and competitively, is a different experience than forty-five days in Traverse City, where a smaller resort-area inventory means fewer candidates and slower seller responses in the off-season. The rule itself never changes: the clock starts the day the relinquished property transfers, and it runs on calendar days, weekends and holidays included. What changes is how much real inventory an investor can responsibly evaluate inside that window depending on which part of Michigan they are buying into.
A Detroit-metro industrial seller often has a wider pool of comparable buildings to choose from along the I-94 and I-96 corridors, which cuts both ways: more options to compare, but also more competition from other buyers working the same corridor. In Lansing, where government-anchored office product moves at a slower, steadier pace, the forty-five days feel less pressured but the pool of genuinely comparable buildings is smaller to begin with.
Choosing the Right Identification Rule Before the Clock Starts
Most Michigan investors end up choosing between three basic identification structures.
- a three-property list naming specific candidates regardless of value
- a diversified multi-asset list under the 200 percent value rule
- a DST allocation paired with one or two direct-ownership candidates
- a single high-conviction property identified under the 95 percent rule
What Slows Identification Down in Practice
The two most common problems we see are not legal ones. The first is a list that looks broad on paper but was never realistically financeable or closeable, built in a rush during the final week. The second is competitive bidding pressure in strong Southeast Michigan submarkets, particularly around Birmingham, Bloomfield Hills, and the Ann Arbor medical corridor, where a seller can simply choose a stronger buyer before the forty-five days run out. We push investors to start building the shortlist before the relinquished property even closes, using the escrow period as working time rather than waiting for the clock to start.
A third problem shows up less often but hurts more when it does: an investor identifies a property based on an early conversation with a broker, only to find out closer to day forty-five that the seller had already accepted another offer weeks earlier. We confirm active availability a second time right before the notice is finalized rather than relying on a single check made at the start of the search.
Keeping Backup Property in the List
An identification that names only the investor's first choice leaves no room if that seller changes terms, loses financing cooperation, or simply stalls. We build in at least one realistic backup for every primary candidate, matched to the same general submarket and price range, so a change in one Detroit-metro or Grand Rapids deal does not force a scramble in the final days of the window. The backup does not need to be an equally attractive property, only a genuinely acquirable one, since its job is to preserve the exchange rather than to match the investor's first choice feature for feature.
Getting the Written Notice Right
The identification itself has to unambiguously describe each property, in writing, delivered to the qualified intermediary or another party to the exchange before midnight on day forty-five. A vague description, a missing legal reference, or a notice sent to the wrong party can undo weeks of careful sourcing. We treat the delivery of that notice as its own milestone, confirmed in writing, not assumed complete because an email went out. For every Michigan file, that means a legal description pulled from the actual title commitment rather than a listing sheet, since street address alone has been enough to create ambiguity on properties with multiple parcels or a pending split.
Common 1031 Exchange Questions
Does the 45-day clock pause for weekends or Michigan holidays?
No. It runs on calendar days from the date the relinquished property transfers, with no extension for weekends, state holidays, or severe winter weather anywhere in Michigan.
Is it harder to identify replacement property up north than in Detroit-metro?
Often, yes, simply because there is less commercial inventory in and around Traverse City compared to Southeast Michigan, so the search has to start earlier and cast a wider net.
Can I change my identification list after it is submitted?
Generally no, once the written notice is delivered by day forty-five it is fixed, which is exactly why we build backup candidates into the original list rather than planning to amend it later.
How early should I start looking for replacement property in Michigan?
Ideally before the relinquished property even closes, using the marketing and escrow period as research time so the forty-five days are spent confirming and finalizing rather than starting the search from zero.
What legal description should be used in a Michigan identification notice?
We pull the legal description from the title commitment rather than a listing sheet or street address alone, since properties with multiple parcels or a pending split can create ambiguity that a street address does not capture.
