A carport is a roofed accessory structure in unincorporated Williamson County, so it needs a building permit from the Building Codes Department and must meet zoning setbacks and the 20-percent accessory-use coverage cap.
Under the adopted International Building Code, a carport is a roofed structure whose framing and wind loads require a Williamson County building permit, whether attached to the house or freestanding; pre-fabricated metal carport kits are permitted the same way. The Zoning Ordinance is the tighter constraint: a carport must meet the side and rear setbacks of its district, counts as an accessory use limited with other accessory structures to 20 percent of the lot, and follows the sliding scale that ties size to parcel size. A front-yard carport faces stricter placement limits than one in a side or rear yard.
Building a carport without a permit is unlawful work. A carport inside a required setback or over the accessory-use coverage limit violates the Zoning Ordinance and can be ordered removed or relocated.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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