Generator Site Plan for a Permit: What to Measure Before You Draw
Many jurisdictions want a site plan showing where the generator sits in relation to the house, property lines and other site features. A useful precheck starts with the same measurements.
Check a location in the planner →
What a generator site plan is trying to prove
A permit reviewer needs enough spatial information to understand the proposed equipment location and whether the plan appears to meet applicable rules. Requirements vary by jurisdiction, but generator checklists commonly ask for the generator location, lot boundaries, building outline and dimensions to relevant features.
Professional site-plan services also emphasize clearances to doors, windows, air intakes, property lines and easements because these are frequent reasons a proposed location must change.
Measurements worth collecting before the permit form
| Item | What to record |
|---|---|
| Property | Lot lines, relevant dimensions, easements and north/orientation if the jurisdiction requests it. |
| House | Exterior wall shape and the proposed generator side. |
| Openings | Nearby windows, doors, vents and fresh-air intakes. |
| Generator | Make/model, enclosure footprint, orientation and pad location. |
| Utilities | Gas/propane source, electrical service, meter/panel/ATS locations and proposed route where required. |
| Other constraints | Fences, A/C equipment, drainage, decks/overhangs, flood requirements or other locally requested features. |
Use the planner before paying for final drafting
WattageFit is not a permit drawing tool and does not use survey-grade parcel data. Its value is earlier: test whether a candidate side-yard location already conflicts with a known wall/opening requirement or the local setback you enter. If it does, you can move the conceptual location before ordering a survey, CAD plan or installer package.
What not to submit from this tool
Do not treat the on-screen yard sketch as a scaled survey, stamped plan, engineered drawing or proof of code compliance. If your authority requires a certified survey, professional design or engineer stamp, use the required professional deliverable.
Useful reference
Example of information commonly included in a commercial generator permit site-plan service ↗. This external service is referenced as an example of permit-plan scope; WattageFit is not affiliated with it.
Related generator planning guides
Reviewed September 22, 2026.