Troy, MO - 2026 Building Permit Guide

Permit Authority

Applies within Troy city limits; separate planning and zoning items route through the city process and fire permits route through Lincoln County Fire Protection District when applicable

Department

City of Troy Building Department

Address

800 Cap-Au-Gris, Troy, MO 63379

Phone

636-528-1254

Email

buildingpermits@cityoftroymissouri.com

Website

https://cityoftroymissouri.com/departments/building/

Online Permit Portal

Application Process

1. Prepare the complete permit application and required plans
2. Submit all permit applications through the SmartGov portal
3. Provide plot plan, building plans, structural details, and utility/right-to-connect information as required by project type
4. Respond to review comments and third-party engineering review if required
5. Pay fees
6. Receive permit and schedule required inspections

Typical processing time: Not clearly posted

Source: City of Troy Building Department

General Requirements

Building, electrical, pool/spa, demolition, accessory structure, basement finish, sign, water/sewer tap, and other regulated work listed by the Building Department

Required Documents

• When a permit is required: Building, electrical, pool/spa, demolition, accessory structure, basement finish, sign, water/sewer tap, and other regulated work listed by the Building Department
• Required documents: Permit application; plot plan; two complete residential plan sets or commercial submittals; truss and TJI reports where applicable; contractor licensing details; project-specific guides and applications
• Permit validity/expiration: Troy forms provide permit issue and expiration fields, but a universal public expiration rule was not clearly posted
• Owner-builder rules if available: Allowed; forms support applicant-performed work, but full public owner-builder rules were not clearly summarized on the main page
• Contractor license requirements: Contractors license applications must be submitted through SmartGov
• Building code adopted: 2015 IBC, IRC, IPC, IMC, IFGC, IECC, ISPSC, and 2014 NEC, with local amendments

Permit validity

Troy forms provide permit issue and expiration fields, but a universal public expiration rule was not clearly posted

Building code

2015 IBC, IRC, IPC, IMC, IFGC, IECC, ISPSC, and 2014 NEC, with local amendments

Owner-builder

Allowed; forms support applicant-performed work, but full public owner-builder rules were not clearly summarized on the main page

Contractor requirements

Contractors license applications must be submitted through SmartGov

Fees

Minimum permit fee

$50.00

Plan check fee

Residential plan review $50.00; commercial plan review $100.00

Permit fee formula

Residential building permits are square-foot based at $0.51, $0.49, or $0.47 per square foot by size tier; commercial permits are $0.67, $0.65, or $0.63 per square foot by size tier; misc permits are flat-fee items

Reinspection fee

Second reinspection fee $50.00; proceeding without required inspection or permit $500.00

Payment note

City notes Sunshine Law notice for permit portal submissions and generally does not transfer or refund fees without Board of Aldermen consent

Fees change. Verify current amounts at the official fee schedule.

Work That Does NOT Require a Permit

Contact the City of Troy Building Department to confirm whether your project requires a permit before starting work.

Inspections

How to Schedule

• Call 636-528-1254 no later than 3:00 p.m. the day before; SmartGov-submitted permits can schedule in the portal by the same deadline ()

Inspection hours

Building Department hours Mon-Fri 7:00 a.m. to 3:30 p.m.; inspections are assigned A.M. or P.M., except footing inspections may get a specific time

Typical inspection sequence: Floodplain if applicable, excavation, footing, underground plumbing, meter base, open wall, insulation, water/sewer right-to-connect, ceiling insulation, final, and fire permit or inspection as needed

Additional Resources

• Building code: 2015 IBC, IRC, IPC, IMC, IFGC, IECC, ISPSC, and 2014 NEC, with local amendments
• Zoning information: View zoning info
• cityoftroymissouri.com
• cityoftroymissouri.com
• License lookup guide: Missouri Contractor License Requirements
• Contract template: Missouri Homeowner-Contractor Agreement
• Missouri hub: Missouri Contractor License & Permit Hub

Frequently Asked Questions

Troy Building Permit FAQ

Do I need a building permit in Troy, MO?

Building, electrical, pool/spa, demolition, accessory structure, basement finish, sign, water/sewer tap, and other regulated work listed by the Building Department

How much does a building permit cost in Troy, MO?

The minimum permit fee is $50.00. Fees are calculated as: Residential building permits are square-foot based at $0.51, $0.49, or $0.47 per square foot by size tier; commercial permits are $0.67, $0.65, or $0.63 per square foot by size tier; misc permits are flat-fee items. Plan check fee: Residential plan review $50.00; commercial plan review $100.00.

How do I apply for a building permit in Troy, MO?

1. Prepare the complete permit application and required plans 2. Submit all permit applications through the SmartGov portal 3. Provide plot plan, building plans, structural details, and utility/right-to-connect information as required by project type 4. Respond to review comments and third-party engineering review if required 5. Pay fees 6. Receive permit and schedule required inspections

How long does it take to get a building permit in Troy, MO?

Typical processing time is Not clearly posted.

What work is exempt from building permits in Troy, MO?

The following work is generally exempt: No consolidated public exempt-work list was located on the Troy pages reviewed.

How do I schedule a building inspection in Troy, MO?

Inspections can be scheduled via: Call 636-528-1254 no later than 3:00 p.m. the day before; SmartGov-submitted permits can schedule in the portal by the same deadline.