Warrensburg, Missouri Building Permit Guide

Inside Warrensburg, building permits come from the City’s Building Inspection Division in Community Development, and applications are filed through the City’s online permit portal. The City enforces the 2024 International Codes and 2023 National Electrical Code, and since September 9, 2026 a new building’s permit fee is its gross area times the International Code Council’s cost per square foot times 0.00309, one fee covering all trades.

What requires a building permit in Warrensburg?

The City requires a building permit to be issued before construction starts, and the Permit Clerk (660-747-9135) can say whether a particular project needs one. Among the City’s amendments to the 2024 codes, every deck needs a permit before it is built, and the exemptions for electrical and mechanical repairs are narrowed to normal repair or replacement that does not alter the approval, add to the system or make it unsafe.

Warrensburg building department: who handles permitting

Building Inspection staff in the Community Development Department answer code questions, review permit applications, inspect construction and administer the dangerous building ordinance; the City Planner reviews applications for zoning. Barbara Carroll is the Director of Community Development.

The Warrensburg permit portal

All building permit applications are submitted electronically. Applicants first register on the City’s online permit portal, and once the registration is approved they can apply for every permit type there. If a project does not match a permit type in the portal, the Permit Clerk can help.

Temporary occupancy of part of a building is possible once the Planning and Zoning, Fire and Public Works departments have signed off on the City’s form and the Building Official finds it safe; the 2026–2027 fee schedule charges nothing for a temporary certificate. When a project is complex enough to need outside engineers, architects or consultants, the City can bill the part of their charges that exceeds half the permit fee.

Warrensburg permit fees

The building permit fee is set by City Code and the 2026–2027 Schedule of Fees, adopted by Resolution 2340 on September 9, 2026. For new construction a single fee covers every trade:

Gross area × cost per square foot × permit fee modifier = permit fee. The cost per square foot is the average construction cost the International Code Council publishes twice a year, and the modifier is set by the City Council to recover about 40% of the Building Inspection Division’s costs. Resolution 2340 lowered the modifier from 0.00446, in place since October 2019, to 0.00309.

Stop-work inspections are charged at the City’s actual cost. Refunds of up to 90% are possible if a permit is withdrawn before any plan review has been done and the written request is made within 180 days of payment.

Electrical, plumbing and mechanical work in Warrensburg

On new construction the trades are covered by the single building permit fee; separate electrical, plumbing or mechanical permits cost at least $75. All general contractors and subcontractors need a current Warrensburg business licence, which City staff check before issuing a permit.

Plumbers and electricians are licensed either by showing master credentials from another city of equal or greater size or by passing the City’s exam. The open-book test takes an hour, is based on the 2023 National Electrical Code or the 2024 International Plumbing Code, and costs $65 on passing; book it with the Permit Clerk.

The Fire Department adopted the 2024 International Fire Code with local amendments in January 2025, and businesses applying for or renewing a business or liquor licence need current building and fire inspections, which the Permit Clerk schedules together.

Alliance handles electrical permit applications for contractors here. More on this: who pulls the electrical permit.

How to get a Warrensburg building permit

Warrensburg inspections

The Building Inspection Division inspects each permitted project throughout construction to check that it meets the adopted codes; questions about inspections go to the Permit Clerk at 660-747-9135. The fee schedule charges nothing for the first two re-inspections; the third costs $100, the fourth $200 and the fifth $250. Occupancy follows the final inspection, or a temporary certificate where the departments approve one.

Local Warrensburg rules

Floodplain: the City is in the National Flood Insurance Program on Johnson County flood maps dated July 4, 2011. The Building Official is the floodplain administrator and issues floodplain development permits for unnumbered A and AE zones. New or substantially improved homes must have the lowest floor, including the basement, 1 foot above the base flood level; other buildings may instead be floodproofed to that level.

Short-term rentals: a bed-and-breakfast or short-term rental business licence is $125, and a further $125 inspection fee applies only if an additional inspection is needed.

Property maintenance: the Property Maintenance Code adopted in 2014 applies to all residential and non-residential buildings. Owners must eliminate pests and significant mold before leasing or renting a unit.

Residential details: builders must offer buyers of houses and townhouses the option of a fire sprinkler system under state law, and trench footings for one-story homes with monolithic slabs must be at least 36 inches deep and, unless fill is approved under the City’s conditions, sit on undisturbed soil.

Missouri building code

Missouri has no mandatory statewide building code for private construction: a county, fire protection district or municipality may adopt one (usually by reference under RSMo 67.280), and in parts of the state none has. Building codes in Missouri

Warrensburg building permit FAQ

Who issues building permits in Warrensburg?

The City’s Building Inspection Division in Community Development, for property inside city limits.

How is the Warrensburg building permit fee calculated?

Gross area times the International Code Council’s cost per square foot times a modifier of 0.00309, with a $75 minimum for any permit.

Which codes does Warrensburg use?

The 2024 International Building, Residential, Existing Building, Fire, Plumbing, Mechanical and Fuel Gas Codes, the 2018 Energy Conservation Code and the 2023 National Electrical Code, in force since March 1, 2025.

Do I need a permit for a deck?

Yes. Warrensburg removed the model code exemption, so every deck needs a permit before it is built.

How do I become a licensed electrician or plumber in Warrensburg?

Show master credentials from a city of equal or greater size, or pass the City’s one-hour open-book exam ($65 on passing).

Can I apply on paper?

Building permit applications are submitted electronically through the online portal after registration.

Warrensburg permit search and official resources

These are the primary sources behind this guide. Codes, fee schedules and procedures change — confirm the position for your filing date.

• Warrensburg business information page
• Warrensburg building inspections and permits
• Warrensburg online permit portal
• Warrensburg Community Development Department
• Warrensburg contractor licensing
• Warrensburg Comprehensive Fee Schedule 2026–2027
• Warrensburg City Council minutes, September 9, 2026 (Resolution 2340)
• Warrensburg Community Development report on the permit fee modifier (September 2026)
• Warrensburg City Code Chapter 6, Article II, building code and fee formula
• Warrensburg City Code Chapter 6, Article VII, floodplain regulations
• Warrensburg property maintenance code enforcement

Simplify Warrensburg permitting with Alliance Permitting

Alliance Permitting is a permit documentation and submission company in Missouri. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

This guide is provided by Alliance Permitting for general information about Warrensburg permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.