Deck Permit Requirements
St. Louis, Missouri
Do You Need a Deck Permit in St. Louis, Missouri?
Yes, in St. Louis, Missouri, a building permit is typically required for deck projects. Setback and zoning regulations may still apply even for exempt structures. Always confirm the latest requirements with the St. Louis building department before starting construction.
Permit Status: Yes
Requirements Details
$100-$400
All attached decks and decks over 30 inches above grade require a building permit in St. Louis.
Permit Rules for Decks in St. Louis, Missouri
Building permits for decks in St. Louis may be required depending on the scope of your project. Before starting your deck project, it is important to understand the local building codes and permit requirements enforced by the St. Louis building department.
Setback requirements in St. Louis ensure structures maintain proper distances from property lines, typically 25 feet from the front, 5 feet from the sides, and 5 feet from the rear. These regulations help maintain neighborhood aesthetics, ensure safety, and prevent disputes with neighboring properties.
Permit fees in St. Louis typically range from $100-$400 for residential deck projects. The permitting process helps ensure your deck meets structural, safety, and zoning requirements. Building without a required permit can result in fines, required removal, or complications when selling your property.
Always verify current requirements directly with the St. Louis, Missouri building department before beginning construction.
Example Scenario
If you are planning to add a 12x16 deck (192 sq ft) to your home in St. Louis, a building permit is likely required. Make sure to review the setback requirements, including the 5-foot side yard setback before finalizing your design. Verify with the St. Louis, Missouri building department before beginning work.
Before You Build: Checklist
- Verify whether your deck project requires a building permit from St. Louis
- Check zoning regulations and setback distances for your property
- Review any HOA or neighborhood covenants that may restrict deck placement, size, or materials
- Confirm your deck meets the 25-foot front, 5-foot side, and 5-foot rear setback distances
- Call 811 before digging to locate underground utilities
- Prepare a site plan showing the deck location on your property
- Budget for permit fees ($100-$400) and any inspection costs
- Schedule required inspections after construction begins
Where to Apply for a Deck Permit in St. Louis, Missouri
To apply for a deck building permit in St. Louis, Missouri, contact the St. Louis Development Services Department or the city's building division. Most municipalities accept permit applications in person at city hall or online through the city's official website. Be prepared to pay permit fees in the range of $100-$400 and to provide a site plan or project description. Processing times vary, so apply well before your planned construction start date.
Official Resources
St. Louis Official Building and Permit InformationAlways verify requirements directly with official sources before beginning construction.
Frequently Asked Questions
Do I need a permit to build a deck in St. Louis, Missouri?
Yes, a building permit is typically required for deck projects in St. Louis, Missouri. Always verify with the local building department before starting construction.
How much does a deck permit cost in St. Louis, Missouri?
Deck permit fees in St. Louis, Missouri typically range from $100-$400. Actual costs may vary based on the scope of your project. Additional fees for plan review or inspections may also apply. Contact the St. Louis building department for current fee schedules.
Can I build a deck without a permit in St. Louis, Missouri?
Building a deck without a required permit in St. Louis, Missouri can result in fines, required removal, or complications when selling your home. Always check with the city building department before starting construction.
Where do I apply for a deck permit in St. Louis, Missouri?
You can apply for a deck building permit through the St. Louis Development Services Department or the city's building division. Visit the official city website for application forms and submission details. Many cities now offer online permit applications in addition to in-person submissions.
Other Deck Permits in Missouri
Kansas City — YesOther Permits in St. Louis
Shed PermitFence PermitPool PermitGarage PermitPergola PermitHot Tub PermitADU PermitLearn More
Deck Permit GuideGeneral Building Permit GuideAll permits in St. LouisAll cities in MissouriSources
Source: St. Louis Development Services Department
- City Planning Department
- Municipal Building Code
- Official City Website
Last verified: 2026-04-01