City Building Permits

Smithville, MO - 2026 Building Permit Guide

How to apply for a building permit in Smithville, Missouri. Permit authority, application steps, fees, and inspection requirements.

Missouri Clay County Updated March 2026

Permit Authority

Covers the 4th-class city of Smithville, including floodplain overlays on the Platte River and the Northland suburbs. citeturn38view0

Department
Smithville Community Development/Building, Zoning & Floodplain Coordinator. citeturn38view0
Address
107 W. Main Street, Smithville, MO 64089. citeturn36view3
Phone
816-532-3897 (Building/Zoning office). citeturn38view0

Online Permit Portal

Platform: Smithville’s in-house portal and submission packet (no third-party portal indicated). citeturn38view0 • Account required: No • Submission: In-person only

Additional resources:

Application Process

  1. Request the appropriate permit packet using the online forms link, fill out the owner/contractor information, and include a cost estimate. citeturn38view0
  2. Attach plans, site dimensions, and supporting documentation (e.g., deed or closing statement for owner-builder submittals). citeturn36view3
  3. Staff reviews the submission, relays comments via email, and returns the application with the permit number when approved. citeturn36view3
  4. Pay fees and schedule inspections through email or phone. citeturn38view0

Typical processing time: Standard review times are listed in the building guidelines (around two weeks for typical residential projects). citeturn36view4

Source: Smithville Community Development/Building, Zoning & Floodplain Coordinator. citeturn38view0

General Requirements

New construction, additions, decks, pools, fences, roof repairs, and trade work; mechanical/plumbing permits require separate applications. citeturn36view3

Required Documents

  • When a permit is required: New construction, additions, decks, pools, fences, roof repairs, and trade work; mechanical/plumbing permits require separate applications. citeturn36view3
  • Required documents: Site plan, floor plan, contractors’ licenses/certificates, and owner-builder paperwork if applicable. citeturn36view3
  • Permit validity/expiration: Not specified online; call the building office for extension details. citeturn38view0
  • Owner-builder rules if available: Homeowners may apply after submitting proof of ownership and agreeing to inspections. citeturn36view3
  • Contractor license requirements: Contractors must provide business licenses and insurance before permits are issued. citeturn36view3
  • Building code adopted: 2018 International Building and Residential Codes (per the building guidelines packet). citeturn36view4
Permit validity
Not specified online; call the building office for extension details. citeturn38view0
Building code
2018 International Building and Residential Codes (per the building guidelines packet). citeturn36view4
Owner-builder
Homeowners may apply after submitting proof of ownership and agreeing to inspections. citeturn36view3
Contractor requirements
Contractors must provide business licenses and insurance before permits are issued. citeturn36view3

Fees

Minimum permit fee
Listed in the packet (smallest project fees start around ). citeturn36view3
Plan check fee
Included in the permit fee; plan review considerations are outlined in the packet. citeturn36view3
Permit fee formula
Valuation-based with separate charges for trade permits shown in the packet. citeturn36view3
Reinspection fee
Assessed for unready sites or deviation from approved plans (per the guidelines). citeturn36view4
Payment note
Payments accepted in person or mailed to City Hall; receipts are provided on request. citeturn38view0

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

Work That Does NOT Require a Permit

Contact the Smithville Community Development/Building, Zoning & Floodplain Coordinator. citeturn38view0 to confirm whether your project requires a permit before starting work.

Inspections

How to Schedule

  • Call 816-532-3897 or email the building division after the permit is issued. citeturn38view0 ()
Inspection hours
Inspections arranged around City Hall business hours; inspector availability is confirmed by office staff. citeturn38view0

Typical inspection sequence: Footing, framing, trade-specific (electrical/mechanical/plumbing), and final. citeturn36view3

Additional Resources

Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the Smithville Community Development/Building, Zoning & Floodplain Coordinator. citeturn38view0 before applying.

Frequently Asked Questions

Smithville Building Permit FAQ

Do I need a building permit in Smithville, MO?
New construction, additions, decks, pools, fences, roof repairs, and trade work; mechanical/plumbing permits require separate applications. citeturn36view3
How much does a building permit cost in Smithville, MO?
The minimum permit fee is Listed in the packet (smallest project fees start around ). citeturn36view3. Fees are calculated as: Valuation-based with separate charges for trade permits shown in the packet. citeturn36view3. Plan check fee: Included in the permit fee; plan review considerations are outlined in the packet. citeturn36view3.
How do I apply for a building permit in Smithville, MO?
1. Request the appropriate permit packet using the online forms link, fill out the owner/contractor information, and include a cost estimate. citeturn38view0 2. Attach plans, site dimensions, and supporting documentation (e.g., deed or closing statement for owner-builder submittals). citeturn36view3 3. Staff reviews the submission, relays comments via email, and returns the application with the permit number when approved. citeturn36view3 4. Pay fees and schedule inspections through email or phone. citeturn38view0
How long does it take to get a building permit in Smithville, MO?
Typical processing time is Standard review times are listed in the building guidelines (around two weeks for typical residential projects). citeturn36view4.
What work is exempt from building permits in Smithville, MO?
The following work is generally exempt: Minor finish work, paint, and small decks/fencing that fall below the thresholds described in the owner’s guide. citeturn36view4.
How do I schedule a building inspection in Smithville, MO?
Inspections can be scheduled via: Call 816-532-3897 or email the building division after the permit is issued. citeturn38view0.

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Important: This page is an educational resource provided by jaspector.com. It is not legal advice, and it does not substitute for official guidance from the permit authority listed above. Permit requirements, fees, and processes change frequently. Always verify current requirements directly with the issuing department before beginning any construction project. Use of this page does not create an attorney-client relationship. Jaspector assumes no liability for any outcomes arising from reliance on this information.