Skipping a site plan doesn't make the requirement go away — it just moves the problem downstream, where it costs more to fix.
A site plan is a scaled drawing that shows how a building sits on a lot — its footprint, its relationship to property lines, setbacks from those lines, driveway and access, and any other features required by your local building department or zoning ordinance. For most new construction and any addition that changes the building's footprint, a site plan is a required part of the permit application. Here's what happens when people try to skip it.
The building department won't issue the permit
Most Michigan building departments won't accept a permit application for new construction or a footprint-changing addition without a site plan. If you try to submit without one, your application comes back incomplete. This delays your permit, which delays your construction start, which can cascade into scheduling problems with your contractor and cost overruns if material prices move in the meantime.
You might violate a setback without knowing it
Every parcel in Michigan has setback requirements — minimum distances from property lines that structures must maintain. These vary by township, zoning district, and sometimes by which property line you're measuring from (front, rear, side). Without a site plan that plots your proposed building location against actual surveyed property line locations, there's no reliable way to confirm you're in compliance. Building inside a setback is a zoning violation that can require you to modify or remove the structure — at your expense.
Easements and encroachments
Site plans also show easements — utility corridors, drainage easements, access easements — that restrict where you can build. These appear on your title work but aren't always obvious on the ground. A structure built over an easement can be required to be relocated, or it creates a liability that clouds your title when you sell.
What a site plan actually shows
A residential site plan typically includes: property lines with dimensions, setback lines, the proposed building footprint with dimensions to property lines, driveway location and width, any existing structures on the lot, north arrow, scale, and a legal description of the parcel. Depending on your township and project scope, it may also need to show utility connections, septic system location, or grading information. Our site plans are built from survey data you provide — we don't survey the property, but we draft and format the plan from your surveyor's data.
When you need one
New construction always. Any addition that increases the building's footprint almost always. Accessory structures (garages, pole barns, sheds above a certain size) typically. Decks and pools in many jurisdictions. If you're not sure whether your project requires a site plan, call your local building department or township zoning office — they'll tell you directly.
If you need a site plan for a permit application and have survey data to work from, reach out and we'll scope it out.