Can I Build a Shed Without a Permit?

The typical exemption

Common thresholds: under 120 sq ft floor area, under 10-12 feet tall, single story, no electrical/plumbing/HVAC, not in a floodplain or easement. The exact numbers vary — verify with the local building department (a phone call, not a guess). Some jurisdictions exempt only prefabricated sheds; site-built structures need permits regardless. Agricultural exemptions exist in rural counties for farm structures.

Rules that still apply

Zoning setbacks — the shed must sit the required distance from property lines, and setback mistakes are the most common shed violation — height limits, lot-coverage maximums, HOA architectural approval (many HOAs prohibit or restrict sheds regardless of the city's exemption), drainage (your shed's roof water cannot flood the neighbor), and easements (never build in a utility or drainage easement — it can be removed at your expense).

When the permit is required

Exceeding the size/height threshold, adding electrical (lights and outlets need electrical permits and inspection — the most common trigger), plumbing, using the shed as habitable space or a home office (accessory dwelling rules apply), and floodplain locations. Permitted sheds need footings or foundations per code (not just skids on dirt) and tie-downs in high-wind regions. When in doubt, call the building department — the call is free, the violation is not.

The bottom line

Small sheds (often <120 sq ft, no utilities) are commonly permit-exempt — but setbacks, HOAs, easements, and coverage still apply. Adding electrical triggers the permit; verify thresholds locally.

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