A buyer looking at a three-quarter-acre parcel in Michiana or Grand Beach sees the numbers that matter to most people: frontage, square footage, proximity to the water. What that buyer usually doesn't see, until a contractor pulls the site plan, is that the state may have already decided how much of that acreage is actually buildable. In parts of New Buffalo Township, the answer can be a fraction of what the deed suggests.
This isn't a hypothetical. It's how Michigan's Critical Dune Area program works, and it's why New Buffalo Township's own board spent part of its June 2026 meeting reaffirming that these restrictions aren't going anywhere.
The Permit Touches More Than the House
Michigan's Sand Dunes Protection and Management law, Part 353 of the Natural Resources and Environmental Protection Act, puts a state permit between a landowner and almost anything that changes the ground in a designated Critical Dune Area. The Michigan Department of Environment, Great Lakes, and Energy administers the program, and its list of regulated activities is longer than most buyers expect: a new house or garage, a driveway, a septic system, a retaining wall, sand removal, and vegetation clearing all typically require a permit before work starts.
There's a narrow carve-out for stairways to the beach, but only if they meet specific criteria around width and elevation above grade. Everything else runs through the state's review process, and that process isn't quick or cheap. Application fees range from $150 to $6,000 depending on project scope, and EGLE has 60 days to process a standard application, or 90 days if the project requires a public hearing. If the proposed grading impacts a slope steeper than a 1-foot vertical rise over 3 horizontal feet, the applicant needs a special exception on top of the standard permit, which carries its own $2,000 fee.
None of this shows up on a listing sheet. It shows up when a buyer's architect asks for a site plan and cross-section and the answer comes back smaller than expected.
When Two Sets of Rules Land on the Same Parcel
Critical Dune Areas aren't the only state-level constraint working the Lake Michigan shoreline. EGLE also designates High-Risk Erosion Areas along stretches where the bluff is receding at a foot or more per year over a minimum 15-year period, and a parcel can carry both designations at once.
Where that overlap happens, the setback math compounds. High-risk erosion rules require new structures to sit landward of a 30-year projected recession line, and that line is calculated for readily movable structures, meaning the building has to be designed so it can physically be relocated if the bluff keeps retreating. Septic systems and larger permanent structures are held to a deeper 60-year setback. A homeowner isn't required to move an existing house that predates the designation, but any future addition or reconstruction gets measured against these lines, not against where the original house happens to sit.
Add a Critical Dune designation on top of that erosion setback, and the buildable envelope on a five-acre parcel with genuine Lake Michigan frontage can end up looking nothing like the acreage figure in the listing. Vegetation clearing, driveway grading, and deck expansion all get folded into the same permitting math.
The Township Just Told Buyers Where This Is Headed
If a buyer is betting that these restrictions will loosen over time, New Buffalo Township gave a clear answer to the contrary this year. At its June 15, 2026 meeting, the township board passed a resolution opposing any redesignation, reduction, or weakening of critical dune area protections, naming Michiana and Grand Beach specifically as the areas of concern.
That's worth sitting with. This wasn't a state agency defending its own turf. It was the local unit of government, the body that could otherwise lobby for looser rules to encourage more development and more tax base, going on record to protect the designation instead. For a buyer weighing whether to gamble on a variance or a future rule change, the township's own position is the clearest signal available: don't plan around these restrictions disappearing.
The same June meeting also saw the township hire a part-time building inspector, a small but telling detail. Local permitting capacity is being staffed up, not wound down.
What to Ask Before You Write, or Accept, an Offer
For a buyer or seller close to a transaction on dune-designated or erosion-designated lakefront in this area, a few questions belong in the process before the purchase agreement, not after.
- Is the parcel mapped in a Critical Dune Area, a High-Risk Erosion Area, or both? EGLE's map tools identify this by address, and the answer changes everything downstream.
- Has a Vegetation Assurance Plan already been prepared? EGLE requires one before issuing most construction permits in a Critical Dune Area, and the Berrien County Conservation District can complete this for a set fee. If a seller already has one on file, that's a real asset to the transaction.
- Does an existing building permit transfer with the sale? A valid EGLE permit can be transferred to a new owner with the current permittee's written permission. If a seller has an active, unused permit for an addition or driveway, confirming that transfer is possible, and getting it in writing, can save months.
- What does the site plan and cross-section actually show for buildable area? Acreage and frontage are marketing numbers. The cross-section submitted with a permit application is the number that matters, and it's worth having a contractor or engineer look at this before the offer is written, not after.
- If the project involves any slope steeper than a 1-foot rise over 3 feet horizontal, has anyone budgeted for a special exception? That's a separate $2,000 fee and a separate review track, and it changes both timeline and cost.
A Short FAQ
Does a Critical Dune designation apply to the whole property or just part of it? It applies to the portion of the parcel that falls within the mapped dune area, which EGLE's atlas breaks out county by county and township by township. A large lot can have only a fraction of its acreage inside the designation, but that fraction is often exactly where a buyer wants to build.
If a permit was issued years ago, does it still apply after a sale? The permit itself can be transferred with the outgoing permittee's written consent, but the underlying rules haven't necessarily stayed the same. A buyer relying on an older permit should confirm its current status through the MiEnviro Portal before assuming it still covers the intended project.
Does this only affect new construction? No. Additions, driveway work, septic upgrades, and even vegetation removal on an already-built lot can trigger the same review process. Minor repairs that don't expand a structure's footprint are generally exempt, but "minor" is EGLE's determination, not the homeowner's.
A lakefront lot in Michiana or Grand Beach can still be exactly the property a buyer wants. The difference between a smooth closing and a stalled build often comes down to whether someone asked the buildable-envelope question before the offer went in, or after. That's the kind of detail a local advisor should be checking before you fall in love with the frontage.
If you're weighing a lakefront purchase or sale in New Buffalo, Harbor Country, or anywhere along Southwest Michigan's shoreline, Jackson Matson can walk through what a specific parcel's dune and erosion status actually means for your plans. Let's Connect.
