Enter verified property data
Use the lot area and the local building or impervious coverage limits from your zoning code, planning department, survey, or other reliable source.
Calculate building coverage and impervious coverage separately using the local limits that actually apply to your parcel.
This calculator is designed to separate building footprint coverage from total impervious coverage so you can test a proposal using the limits that actually apply to your parcel.
Use the lot area and the local building or impervious coverage limits from your zoning code, planning department, survey, or other reliable source.
Keep building footprints separate from driveways, patios, walks, pool decks, and other impervious areas so the percentages are easier to review.
The result shows where the proposal sits against the limits you entered. Final classifications and exceptions still need local verification.
No. Coverage standards can vary by city, county, zoning district, overlay, and project type. Enter the limit that applies to your parcel.
Usually the horizontal footprint of buildings and covered structures, but definitions vary by jurisdiction. Verify the local zoning definition before filing.
Common examples include roofs, driveways, patios, walks, pool decks, and other hard surfaces. Some jurisdictions treat gravel or permeable pavers differently.
Use it as a planning calculation. A permit drawing should follow the jurisdiction format and should use verified site dimensions and classifications.
Send the property address and what you plan to build. We will review the scope and reply.
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