Solar Panel Permit in St. Louis (2026)
Solar Panel permit requirements, fees, and process for St. Louis, MO. Find out if you need a permit and how to apply.
Yes, a Solar Panel permit is required in St. Louis, MO.
A Solar Panel permit is required in St. Louis, MO. The St. Louis Building Division (Community Development Administration) handles permit applications for St. Louis. Below you will find the current thresholds, fees, and process for obtaining a solar panel permit in St. Louis.
When Is a Permit Required?
When a Solar Panel Permit Is Required in St. Louis: All solar panel installations
Permit Fees
Solar Panel Permit Fees in St. Louis: $100-$400. Estimated timeline: 2-4 weeks.
Estimated timeline: 2-4 weeks
How to Get a Solar Panel Permit in St. Louis
Verify whether your project meets the permit threshold in St. Louis: All solar panel installations.
Prepare your permit application and plans. Contact the St. Louis Building Division (Community Development Administration) at https://stlouis-mo.gov/government/departments/building for required documentation.
Submit your application online at https://stlouis-mo.gov/government/departments/building/permits.cfm or in person at the St. Louis Building Division (Community Development Administration).
Pay the permit fee: $100-$400.
Wait for plan check approval. Estimated timeline: 2-4 weeks.
Schedule required inspections through https://stlouis-mo.gov/government/departments/building/inspections.cfm. All inspections must pass before project is finalized.
Important: St. Louis Building Division electrical permit. Ameren Missouri interconnection required for grid-tied systems. Missouri's solar incentives are more limited than some states — no mandatory net metering above 100kW. St. Louis has community solar programs through Ameren Missouri.
St. Louis Building Division (Community Development Administration)
Frequently Asked Questions
Source: St. Louis Building Code — Solar Panel Requirements. Last verified April 6, 2026. View source