Permit Required? Required
Typical Fee Range $1,000–$3,500 Includes building, zoning, and utility capacity fees.
Fee Method Valuation-based
Apply Online Apply at City Planning and Development - Permits Division →

What's Required in Kansas City

  • Building permit required for all secondary dwelling units.
  • Must contain independent cooking, sleeping, and sanitation facilities.
  • Requires professional architectural plans including foundation.
  • Must meet lot coverage and setback rules for the zoning district.
  • Owner-occupancy of the property is a mandatory requirement.
  • Maximum size capped (usually 800 sq ft or 30% of main house).

How to Get a ADU Permit in Kansas City

1

Step 1: Zoning Verification

Confirm an ADU is allowed on your lot via City Planning.

2

Step 2: Design Documents

Prepare detailed site plans and architectural drawings.

3

Step 3: Submit Portal

Apply for a New Accessory Structure permit online.

4

Step 4: Multi-Agency Review

Checked by Building, Zoning, and Water departments.

5

Step 5: Inspections

Full series from footings to final certificate of occupancy.

Frequently Asked Questions

Yes, provided it meets all building and safety codes for habitation.
ADUs can often share meters with the main house in KC.
Expect 4-6 weeks for full review of new ADU builds.