Boone County, MO - 2026 Building Permit Guide

Permit Authority

The division covers only unincorporated Boone County; Resource Management has intergovernmental agreements to inspect but not authorize permits inside cities such as Columbia, Ashland, Centralia, Hallsville, Rocheport, Sturgeon, Harrisburg, and Hartsburg. citeturn26search11

Department

Boone County Resource Management Department – Building Inspections Division, which issues and inspects building permits for every property outside the limits of an incorporated city. citeturn0search4

Address

Boone County Government Center, 801 E. Walnut St., Room 315, Columbia, MO 65201-7732. citeturn2search4

Phone

Planning 573-886-4330; Inspections 573-886-4339. citeturn2search4

Email

resmgt@boonemo.gov. citeturn2search4

Website

https://www.showmeboone.com/resource-management/inspections/. citeturn0search4

Online Permit Portal

Application Process

1. Use the “Apply for Building Permit” link on the Building Inspections page or call the office to begin a new application. citeturn0search4
2. Provide the required documentation, pay the valuation/cost-based fee, and coordinate with any participating city (Centralia, Sturgeon, Harrisburg, Hallsville, Hartsburg, Rocheport) if your parcel sits within its limits. citeturn26search11 citeturn2search4
3. Resource Management reviews the submission, issues the permit, and notifies the applicant when inspections may be scheduled. citeturn0search4
4. Schedule inspections by calling 573-886-4339 or emailing the Inspections Division once the permit is active. citeturn2search4
5. After the final inspection and any required corrections, Resource Management issues the certificate of occupancy for the approved work. citeturn0search4

Typical processing time: Not published; applicants should contact the division for current turnaround expectations. citeturn2search4

Source: Boone County Resource Management Department – Building Inspections Division, which issues and inspects building permits for every property outside the limits of an incorporated city. citeturn0search4

General Requirements

Any new structure, addition, alteration, demolition, or repair that affects the structural or regulated systems of a building on unincorporated property requires a county permit. citeturn0search4

Required Documents

• When a permit is required: Any new structure, addition, alteration, demolition, or repair that affects the structural or regulated systems of a building on unincorporated property requires a county permit. citeturn0search4
• Required documents: Plans are required for commercial projects, accessory buildings larger than 3,000 square feet, and rooftop solar installations, and inspectors may request additional engineering or special-inspection reports. citeturn2search4
• Permit validity/expiration: Permits become void if work does not begin within six months or if no inspection request is made for six consecutive months. citeturn37search6
• Owner-builder rules if available: No owner-builder-specific guidance is posted online; applicants follow the same permit process as contractors. citeturn2search4
• Contractor license requirements: The published materials do not list unique contractor licensing tiers for unincorporated projects, so applicants should verify licensing directly with Resource Management. citeturn2search4
• Building code adopted: Resource Management enforces the 2015 International Residential Code (with local amendments) for the agreement cities, and that same county-level code is the baseline for unincorporated inspections. citeturn37search9

Permit validity

Permits become void if work does not begin within six months or if no inspection request is made for six consecutive months. citeturn37search6

Building code

Resource Management enforces the 2015 International Residential Code (with local amendments) for the agreement cities, and that same county-level code is the baseline for unincorporated inspections. citeturn37search9

Owner-builder

No owner-builder-specific guidance is posted online; applicants follow the same permit process as contractors. citeturn2search4

Contractor requirements

The published materials do not list unique contractor licensing tiers for unincorporated projects, so applicants should verify licensing directly with Resource Management. citeturn2search4

Fees

Minimum permit fee

Not published; fees are determined by project valuation and square footage according to the guidance on the site. citeturn2search4

Plan check fee

Not listed separately; plan review is conducted through the Resource Management review process tied to the main permit. citeturn2search4

Permit fee formula

New construction fees use square footage rates while remodels/repairs rely on the owner’s estimated cost; additional fees apply for wastewater, driveway, and sidewalk permits. citeturn2search4

Reinspection fee

Not publicly itemized; inquiries should be directed to the Building Inspections office. citeturn2search4

Payment note

Credit-card payments incur a 2.35% convenience fee (minimum $1.55); paying by check or cash avoids the fee. citeturn2search4

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

Work That Does NOT Require a Permit

Contact the Boone County Resource Management Department – Building Inspections Division, which issues and inspects building permits for every property outside the limits of an incorporated city. citeturn0search4 to confirm whether your project requires a permit before starting work.

Inspections

How to Schedule

• Call 573-886-4339 or email the Inspections Division once the permit is active to request each inspection. citeturn2search4 ()

Inspection hours

Inspection appointments are handled through the Building Inspections office during standard county business hours; verify specific time slots with the office. citeturn0search4

Typical inspection sequence: The division performs the customary sequence of foundation, framing, mechanical, electrical, plumbing, and final inspections for every permitted project. citeturn0search4

Additional Resources

• Building code: Resource Management enforces the 2015 International Residential Code (with local amendments) for the agreement cities, and that same county-level code is the baseline for unincorporated inspections. citeturn37search9
• Zoning information: View zoning info
• License lookup guide: Missouri Contractor License Requirements
• Contract template: Missouri Homeowner-Contractor Agreement
• Missouri hub: Missouri Contractor License & Permit Hub

Frequently Asked Questions

Boone County Building Permit FAQ

Do I need a building permit in unincorporated Boone County, MO?

Any new structure, addition, alteration, demolition, or repair that affects the structural or regulated systems of a building on unincorporated property requires a county permit. citeturn0search4

How much does a building permit cost in unincorporated Boone County, MO?

The minimum permit fee is Not published; fees are determined by project valuation and square footage according to the guidance on the site. citeturn2search4. Fees are calculated as: New construction fees use square footage rates while remodels/repairs rely on the owner’s estimated cost; additional fees apply for wastewater, driveway, and sidewalk permits. citeturn2search4. Plan check fee: Not listed separately; plan review is conducted through the Resource Management review process tied to the main permit. citeturn2search4.

How do I apply for a building permit in unincorporated Boone County, MO?

1. Use the “Apply for Building Permit” link on the Building Inspections page or call the office to begin a new application. citeturn0search4 2. Provide the required documentation, pay the valuation/cost-based fee, and coordinate with any participating city (Centralia, Sturgeon, Harrisburg, Hallsville, Hartsburg, Rocheport) if your parcel sits within its limits. citeturn26search11 citeturn2search4 3. Resource Management reviews the submission, issues the permit, and notifies the applicant when inspections may be scheduled. citeturn0search4 4. Schedule inspections by calling 573-886-4339 or emailing the Inspections Division once the permit is active. citeturn2search4 5. After the final inspection and any required corrections, Resource Management issues the certificate of occupancy for the approved work. citeturn0search4

How long does it take to get a building permit in unincorporated Boone County, MO?

Typical processing time is Not published; applicants should contact the division for current turnaround expectations. citeturn2search4.

What work is exempt from building permits in unincorporated Boone County, MO?

The following work is generally exempt: Public information is thin; the Building Inspections page does not publish a discrete exempt-work list, so applicants should confirm any proposed exemption directly with the division. citeturn0search4.

How do I schedule a building inspection in unincorporated Boone County, MO?

Inspections can be scheduled via: Call 573-886-4339 or email the Inspections Division once the permit is active to request each inspection. citeturn2search4.