St. Clair, MO — 2026 Building Permit Guide

On this page 6

§ 01

Permit authority

City of St. Clair Building Department. 【0†source】citeturn8view0

Street address

1 Paul Parks Dr, St. Clair, MO 63077. 【0†source】citeturn8view0

Phone

(636) 629-0333. 【0†source】citeturn8view0

cityinspector@stclairmo.us / bldgadmin@stclairmo.us. 【0†source】citeturn8view0

Coverage

Oversees building, commercial, and fire-related inspections; requires local business licenses and enforces paving and floodplain requirements noted in the application. 【0†source】citeturn8view0

Online portal

https://cms6.revize.com/revize/stclairmo/Commercial%20Building%20Permit%20Application%20%26%20Cover%20Sheet.pdf. 【0†source】citeturn8view0

Revize Document Center. 【0†source】citeturn8view0

§ 02

When a permit is required

Permit triggers and exempt work for St. Clair

New construction, additions, alterations, electrical/mechanical/plumbing work, and any work affecting entryways on city streets must be permitted; driveways and parking must be paved. 【0†source】citeturn8view0

Scope of work

Permit?

No exempt-work list is published on the application. 【0†source】citeturn8view0

Exempt

Exempt No exempt-work list is published on the application. 【0†source】citeturn8view0

Required documents

When a permit is required: New construction, additions, alterations, electrical/mechanical/plumbing work, and any work affecting entryways on city streets must be permitted; driveways and parking must be paved. 【0†source】citeturn8view0
Required documents: Plot plan, two detailed plan sets, estimated cost, contractor info, flood plain status, AMEREN electrical service info, and contractor/business license data. 【0†source】citeturn8view0
Permit validity/expiration: Not specified. 【0†source】citeturn8view0
Owner-builder rules if available: Not published. 【0†source】citeturn8view0
Contractor license requirements: All contractors and subcontractors must have a valid City of St. Clair business license before work may start. 【0†source】citeturn8view0
Building code adopted: The 2009 IRC/IBC are indicated in the State of Missouri City Building Codes dataset for St. Clair; applicants should confirm with code enforcement. 【0†source】citeturn15view0

Building code: The 2009 IRC/IBC are indicated in the State of Missouri City Building Codes dataset for St. Clair; applicants should confirm with code enforcement. 【0†source】citeturn15view0
Permit validity: Not specified. 【0†source】citeturn8view0
Owner-builder: Not published. 【0†source】citeturn8view0
Contractor requirements: All contractors and subcontractors must have a valid City of St. Clair business license before work may start. 【0†source】citeturn8view0

§ 03

Application process

Typical processing: Not published. 【0†source】citeturn8view0

01

Provide a plot/site plan showing property lines, site changes, and civil drawings (setbacks and zoning compliance are verified). 【0†source】citeturn8view0
02

Submit two sets of detailed drawings (foundation, floor, wall, stair, elevation, electrical, mechanical, plumbing) that are stamped by a registered design professional. 【0†source】citeturn8view0
03

Complete the commercial building permit application, report the total estimated project cost, pay the calculated fee, and receive the permit before work begins. 【0†source】citeturn8view0
04

Schedule the listed inspections (footings, foundation, electrical service, rough-in, drywall, fire sprinkler, and final) with at least one day’s notice; ensure a city business license is active. 【0†source】citeturn8view0

Typical processing time: Not published. 【0†source】citeturn8view0

Source: City of St. Clair Building Department. 【0†source】citeturn8view0 ↗

§ 04

Fee schedule

St. Clair building permit fees

Fee type

Amount

Minimum permit fee

Not listed. 【0†source】citeturn8view0

Plan check fee

Not separately identified. 【0†source】citeturn8view0

Permit fee formula

Based on the estimated total cost reported on the application. 【0†source】citeturn8view0

Reinspection fee

Not specified. 【0†source】citeturn8view0

Fees must be paid in full before the permit is issued. 【0†source】citeturn8view0

§ 05

Required inspections

Scheduling and sequence

How to schedule

Inspections must be scheduled at least one day in advance with the Building Department; the application emphasizes this requirement. 【0†source】citeturn8view0 ()

Inspection hours: Not published. 【0†source】citeturn8view0

Typical sequence: Footings, foundation, electrical service, rough-in, drywall, fire sprinkler, and final inspections are explicitly listed. 【0†source】citeturn8view0

§ 06

Frequently asked

Common questions about St. Clair permits

01 Do I need a building permit in St. Clair, MO? ▸

02 How much does a building permit cost in St. Clair, MO? ▸

Building permit fees in St. Clair, MO are set by the local building department and vary by project type and valuation. The minimum permit fee is Not listed. 【0†source】citeturn8view0. Fees are calculated as: Based on the estimated total cost reported on the application. 【0†source】citeturn8view0. Plan check fee: Not separately identified. 【0†source】citeturn8view0.

03 How do I apply for a building permit in St. Clair, MO? ▸

To apply for a building permit in St. Clair, MO, follow these steps: 1. Provide a plot/site plan showing property lines, site changes, and civil drawings (setbacks and zoning compliance are verified). 【0†source】citeturn8view0 2. Submit two sets of detailed drawings (foundation, floor, wall, stair, elevation, electrical, mechanical, plumbing) that are stamped by a registered design professional. 【0†source】citeturn8view0 3. Complete the commercial building permit application, report the total estimated project cost, pay the calculated fee, and receive the permit before work begins. 【0†source】citeturn8view0 4. Schedule the listed inspections (footings, foundation, electrical service, rough-in, drywall, fire sprinkler, and final) with at least one day’s notice; ensure a city business license is active. 【0†source】citeturn8view0

04 How long does it take to get a building permit in St. Clair, MO? ▸

Building permit processing times in St. Clair, MO typically run Not published. 【0†source】citeturn8view0. Timelines can vary based on project complexity and current department workload.

05 What work is exempt from building permits in St. Clair, MO? ▸

Not all construction work requires a permit in St. Clair, MO. The following work is generally exempt: No exempt-work list is published on the application. 【0†source】citeturn8view0. When in doubt, confirm with the local building department before starting work.

06 How do I schedule a building inspection in St. Clair, MO? ▸

Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in St. Clair, MO via: Inspections must be scheduled at least one day in advance with the Building Department; the application emphasizes this requirement. 【0†source】citeturn8view0.

last verified April 2026 source City of St. Clair Building Department. 【0†source】citeturn8view0 ↗ entry id permits/missouri/franklin/city-of-st-clair

Report a correction

Educational reference. Permit rules and fees change — confirm current requirements directly with City of St. Clair Building Department. 【0†source】citeturn8view0 before applying. Jaspector is not legal advice.

City of St. Clair

Other jurisdictions in Franklin County.