Deck Construction Permits in Lafayette

Local Rule

Lafayette Consolidated Government, Permitting Division

The city's own Building Codes page lists its permit exemptions by name, fences not over 7 feet, a shed of 120 square feet or less on a movable foundation, retaining walls under 4 feet, and cosmetic work, and a deck does not appear among them, unlike Baton Rouge's own published exemption for decks under 200 square feet and 30 inches. Because Lafayette's population exceeds 45,000, state law (RS 40:1730.30) lets the city enforce the Louisiana State Uniform Construction Code on residential accessory structures without the smaller-parish exemption that applies elsewhere, and the city's own page confirms a building permit is required for almost any structure associated with a home.

Source · Verified September 2026

Lafayette Building Department

Hours and procedures can change — call ahead to confirm.

How This Compares to Louisiana Statewide

Louisiana has no county government, so there is no county-level rule to compare against. Here is what applies at the state level instead:

The only exception is a small freestanding platform 200 sq ft or smaller and no more than 30 inches above grade that is not attached to the house (IRC R105.2); any attached or elevated deck needs a permit.

See the full state guide

Nearby Cities with Verified Rules

Other cities near Lafayette 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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