The Map That Decides What You Can Build on Lake Michigan Was Drawn in 1989. Michigan Just Redrew It.

In 1989, somebody with a set of paper maps drew a line around roughly 74,000 acres of Michigan sand dunes and called them critical. That line has decided what can and cannot be built along the Lake Michigan shore ever since, including here in Leelanau and Benzie counties.

It just got redrawn. All of it.

EGLE spent 2024 through 2026 re-delineating every critical dune area in the state, and the results — a full report plus a 2026 Proposed Atlas of Critical Dune Areas — are now published. Some ground gets added. Some gets taken off the list.

If you own Great Lakes frontage up here, or you’re shopping for it, this is the quietest consequential story in Northern Michigan real estate right now.

First, what a critical dune area actually does to a property

Michigan has roughly 230,000 acres of coastal dunes. In 1989 the Legislature carved out about 74,000 of them for special protection under what’s now Part 353 of NREPA, the Sand Dunes Protection and Management Act.

Inside a critical dune area you need a permit to do most of the things that turn dirt into a house. The home. The garage. The driveway. The septic system. A retaining wall. Moving sand.

Here’s the part that catches people. That permit does not come from your township. EGLE administers Part 353 directly in every critical dune area in Michigan except three — Pere Marquette Township down in Mason County, and the two townships on Beaver Island. Everywhere up here, you’re dealing with Lansing.

The application fee alone runs $150 to $6,000, and it stacks on top of every other fee. Then there’s a 30-day administrative completeness review before the real clock even starts, followed by 60 days for EGLE to process it, or 90 if somebody asks for a public hearing.

The rules that actually shape the house

A structure has to sit behind the crest of the first landward ridge that isn’t a foredune. That’s the baseline.

Build within 100 feet landward of that crest and four things kick in: a site plan stamped by a registered architect or licensed professional engineer, access from the landward side of the dune only, restabilization with indigenous vegetation, and — this one is absolute — the crest of the dune cannot be reduced in elevation. You do not get to shave the hill for a better view.

You generally cannot put a dwelling on the first lakeward-facing slope or on a foredune at all. The narrow exception is a lot of record recorded before July 5, 1989 that has no sufficient buildable area behind the crest, and even then the build gets pushed as far landward as the site physically allows.

Touch a slope steeper than one foot of rise per three feet of run and you’re out of standard review entirely. That’s a special exception, and the fee for that one is $2,000 by itself.

Every application also needs a vegetation assurance: what’s growing there, what your project does to it, how it gets restored. In Benzie County the Conservation District helps owners put those together. It is not a formality, and your permit can require monitoring of the plantings after construction.

And a detail that surprises almost everyone: any two property owners within two miles of your project can force it into a public hearing just by asking in writing. Two miles is a lot of neighbors on a shoreline.

The friendliest rule in the whole statute is the stairway exemption. A beach stairway elevated above grade, five feet wide or less including the landings, no roof, no walls, built without wheeled or tracked self-propelled equipment, with vegetation impact limited to the footprint — no permit. Miss any one of those and you’re filing an application.

What actually changed in 2026

The 1989 atlas was drawn with 1989 technology. The criteria were simple: dune sand, within 1.5 miles of a Great Lakes shoreline, at least a mile long measured along the shore, at least 20 feet tall, plus a set of exemplary dune plant communities.

In the fiscal year 2024 budget, the Legislature told EGLE to do it over. EGLE contracted GEI Consultants along with the Michigan Natural Features Inventory, Michigan Tech, and Michigan State, and they went at it with 1-meter LiDAR, drone imagery, and boots on the ground through the 2025 growing season.

The assignment had three parts, and this is where it gets interesting if you own shoreline: correct the existing boundaries, designate high-quality dune systems that aren’t currently protected, and de-designate existing areas that no longer hold the diversity, quality, and function of a critical dune.

Read that again. On any given parcel, this redraw can go either direction.

The caveat that matters: the 2026 atlas is proposed. The whole delineation was structured to hand legislators a choice, and until Lansing acts, the 1989 lines are still the ones your permit gets measured against.

The Dune Test: three questions before you write the offer

This takes an afternoon, and we’d run it on any Great Lakes frontage before an inspection contingency ever comes up.

One: is the parcel inside a critical dune area right now? EGLE publishes the maps by township and the boundaries sit in the state’s open GIS portal. This is a fifteen-minute answer, and it’s remarkable how often nobody checks it.

Two: where does the buildable envelope actually fall? Not how many acres — where the crest sits, and how much usable room exists behind it. A three-acre parcel with all three acres on the lakeward slope is a beautiful place to have a picnic.

Three: does the line move under the 2026 proposed atlas? If ground is proposed for de-designation, that’s a real future option nobody else is pricing. If it’s proposed for new designation, you want to know that before you buy, not after you’ve paid an architect.

Why this matters more than it did five years ago

Leelanau County sold 151 homes in the first half of 2026, up from 130 over the same stretch last year, and the average sale price climbed past $937,000. Grand Traverse County’s median came in at $420,000.

That spread tells you where the money is going. The high end up here is coastal, and coastal increasingly means dune. At those numbers, a permit question that adds nine months and a $2,000 special exception isn’t a footnote — it’s the difference between a build and a very expensive campsite.

One local wrinkle worth knowing: the critical dune boundary keys off proximity to the Great Lakes shoreline, within 1.5 miles, not off owning Lake Michigan frontage. Parcels tucked behind the big dune complexes, including ground near Glen Arbor and up the shore toward Frankfort, can sit inside a critical dune area without a single foot of beach. Inland-lake frontage on Torch or Elk Lake is a completely different animal.

Work in this market long enough and you notice the expensive surprises up north are almost never about the house. They’re about the ground underneath it — same reason we keep telling land buyers that a lot isn’t buildable until a sanitarian digs a hole. Sand is just a slower, prettier version of the same lesson.

So here’s the question I’d actually like answered: if you learned tomorrow that your shoreline lot was proposed for de-designation, freeing up ground that’s been locked since 1989, would you finally build on it, or would you sell into the news?

If you’re looking at Great Lakes frontage this fall, or you already own some and want to know which side of the new line you’re on, reach out. We’ll pull the maps with you before you fall in love with a view you can’t legally build behind. You can also see what we have on the market right now.

Taylor Brown, Realtor

Taylor@taylorbrownrealtor.com