Sheds create more permit confusion than any other backyard project, because the permit exemption and the placement rules are two different things. Here is the part that matters for your paperwork: if your shed needs a permit, the application needs a site plan, and even many permit-exempt sheds still need their placement checked.
The exemption trap
Most cities exempt small sheds from building permits, commonly under 120 or 200 square feet depending on the state (the shed permit rules by state cover the thresholds). Homeowners hear "exempt" and skip the paperwork entirely. Then the code officer letter arrives, because the exemption covers the building permit, not the zoning rules. Setbacks, easements, lot coverage, and accessory-structure counts apply to every shed, exempt or not, and a shed inside an easement or over a setback line has to move no matter how small it is.
That is why the site plan matters even when the permit does not: it is the five-minute check that saves you from relocating a fully built shed.
What the shed site plan has to show
When a permit does apply, the reviewer checks the drawing for:
- Property lines with lot dimensions
- Existing structures, including the house, garage, and driveway
- The shed, to scale, with its footprint dimensions labeled, the same numbers the exemption threshold is measured against
- Setbacks from the shed to the rear and side property lines, written as numbers
- Separation between the shed and the house or other structures, which many codes regulate
- Easements, the classic avoidable shed rejection
- The basics block: north arrow, scale, parcel number or address
Getting the drawing without the drama
The drafted route: shed site plans run $89 to $259, delivered in 24 to 48 hours, drawn from county GIS and satellite imagery with the shed dimensioned, setbacks labeled, and free revisions until your building department accepts it. For a purchase most people make once, it is the shortest path between "I bought a shed" and "the city said yes."
The DIY route is legitimate for simple lots: the six-step drawing walkthrough shows the method, and the Pre-Submission Checklist catches the mistakes reviewers catch. Budget an afternoon, and be strict about drawing to a stated scale, because a mislabeled setback costs a correction notice and a redraw.
One more placement note
Prefab shed deliveries are unforgiving: the truck arrives, the shed goes where you point, and moving it later is a crane conversation. Settle the placement on paper first, against your real property lines, not the fence line, since fences are famously not on the boundary. The complete guide to site plans for permits covers how to verify your lines and everything else on this page in more depth.