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Overland Park, KS Accessory Structures: Tiny Homes (2026)

Heavy Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Tiny home rules in Overland Park, KS, covering tiny houses on wheels (THOWs), park model RVs, and tiny home on foundation builds, determine where they are legal and how they get permitted.

Key Facts

Absolute minimum
864 square feet livable area
Largest class
2,600 square feet, Classification 1
IRC Appendix AQ
Not adopted
Adopted appendices
BA, BF and BG only
Sheds
200 square feet, two maximum

Summary

Overland Park sets a hard minimum of 864 square feet of livable floor area for any single-family dwelling, and the Planning Commission assigns each subdivision a minimum size class as high as 2,600 square feet. The IRC tiny house appendix is not adopted.

Each single-family dwelling or residence hereafter located or constructed within the City which is situated upon land not previously classified and designated as to minimum floor area for single-family dwelling purposes shall contain a minimum floor area of 864 square feet.

Source: City of Overland Park Municipal CodeView official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: latest section effective 1901-01-01).

Full Breakdown

OPMC 18.460.360 requires every single-family dwelling on unclassified land to contain at least 864 square feet of floor area. OPMC 18.460.350 directs the Planning Commission to assign each subdivision a minimum total livable floor area classification at plat approval, from Classification 10 at 864 square feet up to Classification 1 at 2,600 square feet, measured as gross floor area minus garages and basements. OPMC 16.310 adopts the 2024 International Residential Code but adopts only Appendices BA, BF, and BG. Appendix AQ, the tiny house appendix, is left out. Accessory dwelling units are absent from the OPMC 18.390.030 accessory use list, and sheds are capped at 200 square feet.

Violations & Fines

Building without a permit or below the assigned minimum dwelling size blocks the certificate of occupancy; zoning and property maintenance violations are public offenses penalized under OPMC 1.12.010.

Frequently Asked Questions

Can I build a 400 square foot tiny house?
No. OPMC 18.460.360 sets an 864 square foot minimum floor area for single-family dwellings, and most subdivisions carry a higher Planning Commission classification.
Does Overland Park use the IRC tiny house appendix?
No. OPMC 16.310 adopts the 2024 IRC with only Appendices BA, BF, and BG. Appendix AQ on tiny houses is left out.
Can I add a backyard cottage or ADU?
Accessory dwelling units are not on the OPMC 18.390.030 list of permitted residential accessory uses. Detached accessory buildings are capped at two, with sheds limited to 200 square feet.

Sources & Official References

Other rules in Overland Park

Fence Regulations: Height LimitsSome RestrictionsADU RulesSignificant RestrictionsShed & Carport RulesSome RestrictionsParking Rules: Loading ZonesSome RestrictionsParking Rules: Driveway RulesSome RestrictionsFence Regulations: Fence Permit RequirementsSome RestrictionsAnimal Ordinances: Veterinary Clinic ZoningSignificant RestrictionsAnimal Ordinances: MicrochippingSome Restrictions

All Overland Park rules

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