County Building Permits
St Mary Parish, LA - 2026 Building Permit Guide
How to apply for a building permit in unincorporated St Mary Parish, Louisiana. Permit authority, application steps, fees, and inspection requirements.
Permit Authority
Unincorporated lands in St. Mary Parish. The parish UDC states it applies to all unincorporated lands within St. Mary Parish.
- Department
- St. Mary Parish Government, Planning and Zoning Department
- Address
- Fifth Floor Courthouse, 500 Main Street, Franklin, LA 70538
- Phone
- (337) 828-4100 ext. 5280 or ext. 5555; main parish line also lists ext. 5555
Online Permit Portal
Platform: MGO Connect • Account required: Yes • Submission: In-person only
Application Process
- Confirm the site is in unincorporated parish territory and identify any zoning, subdivision, floodplain, drainage, or coastal constraints.
- Use the parish Planning and Zoning Department contact page for guidance and access the application portal.
- Complete the permit application in MGO Connect and upload required project documents.
- Parish staff reviews the submission for completeness and code/zoning compliance.
- If additional approvals are needed, obtain them before permit issuance.
- Permit is issued after parish review and any required outside approvals.
Source: St. Mary Parish Government, Planning and Zoning Department
General Requirements
- Contractor requirements
- Louisiana contractor licensing rules still apply at the state level. Parish page directs users to permits@stmaryparishla.gov for questions.
Work That Does NOT Require a Permit
Contact the St. Mary Parish Government, Planning and Zoning Department to confirm whether your project requires a permit before starting work.
Inspections
How to Schedule
Additional Resources
- Zoning / UDC
- License lookup guide: Louisiana Contractor License Requirements
- Contract template: Louisiana Homeowner-Contractor Agreement
- Louisiana hub: Louisiana Contractor License & Permit Hub
Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the St. Mary Parish Government, Planning and Zoning Department before applying.
Frequently Asked Questions
St Mary Parish Building Permit FAQ
- How do I apply for a building permit in unincorporated St Mary Parish, LA?
- 1. Confirm the site is in unincorporated parish territory and identify any zoning, subdivision, floodplain, drainage, or coastal constraints. 2. Use the parish Planning and Zoning Department contact page for guidance and access the application portal. 3. Complete the permit application in MGO Connect and upload required project documents. 4. Parish staff reviews the submission for completeness and code/zoning compliance. 5. If additional approvals are needed, obtain them before permit issuance. 6. Permit is issued after parish review and any required outside approvals.
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