Deck Construction Permits in Kansas City

Local Rule

City of Kansas City, MO, Development Services / City Planning & Development

The city's own Building Permit Exempt Work page states item (g) directly: platforms and decks not exceeding 30 inches above grade at any point and not over any basement or story below are exempt, with no separate square footage cap in that item, distinct from the 200 square foot figure used for detached accessory structures under item (a). An attached deck needs a permit regardless of height, and ledger board connections using lag screws or through-bolts with proper flashing are a specific inspection focus. Applications go through the city's Compass KC online system, with typical residential review running three to four weeks.

Source · Verified September 2026

Kansas City Building Department

Hours and procedures can change — call ahead to confirm.

How This Compares to Jackson County

Kansas City's own rule is shown above (Depends on project scope). Here is the separate rule that applies at the county level, for context:

Jackson County Department of Public Works, Development Divis

Jackson County's Department of Public Works administers its own building permit process for unincorporated areas, separate from Kansas City, Independence, Blue Springs, and Raytown, each of which runs its own building department. Kansas City, the county's dominant city, exempts a deck or platform not more than 30 inches above grade and not over any basement or story below from a building permit under its own adopted code.

See the full county page

Nearby Cities with Verified Rules

Other cities near Kansas City with a confirmed deck construction rule:

FAQs

Building It Yourself? Here's What You'll Need

Popular tools and materials homeowners use for a deck construction project:

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