City Guide · Verified 2026
Deck Construction Permits in Columbia
Local Rule
City of Columbia Building and Site Development Division
Columbia's own amended building code, recently updated from the 2018 to the 2024 IBC edition, requires a permit for any deck attached to the house regardless of size, and for a detached deck once it passes roughly 200 square feet. The regional Building Permit Fee Calculator used for Columbia-area residential permits charges deck and porch construction at a flat 8 cents per square foot, with a minimum permit fee of $40 applying even to small projects; covered decks or porches built as part of a new house or addition are charged the same 8 cents per square foot added on top of the main structure's fee. The city's own Plan Review Fee runs 50 percent of the building permit fee whenever plans are required, and a failed inspection carries a separate $35 charge. In standard R-1 zones, a rear deck typically must clear a 25 foot rear setback, though the city may apply a different standard to unenclosed decks.
Source · Verified September 2026
Columbia Building Department
Office: City of Columbia Community Development Department
Address: 701 E. Broadway, Columbia, MO 65201
Phone: (573) 874-7474
Hours and procedures can change — call ahead to confirm.
How This Compares to Boone County
Columbia's own rule is shown above (Depends on project scope). Here is the separate rule that applies at the county level, for context:
Boone County Resource Management (unincorporated areas)
The county's own building permit application requires the square footage of "main floor, second floor, garage, carport, breezeway, porch, and decks (all separate)" to be disclosed, confirming decks are treated as a regulated structural category with no small-deck exemption identified. The City of Columbia, within the county, separately confirms through its own building code division that permits are required for deck construction, with setback, height, and structural requirements enforced.
Nearby Cities with Verified Rules
Other cities near Columbia with a confirmed deck construction rule:
FAQs
Which department handles Deck Construction permits in Columbia?
City of Columbia Building and Site Development Division handles Deck Construction permits in Columbia.
Is Columbia different from Boone County on Deck Construction?
Yes. Columbia's rule is "Depends on project scope", while Boone County in general is "Permit required". See the full breakdown of each below.
Building It Yourself? Here's What You'll Need
Popular tools and materials homeowners use for a deck construction project:
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