Zoning, building permits and septic rules in Gardner, Kansas
Gardner is a city in Johnson County, Kansas. Gardner adopts its own zoning, so inside its limits Gardner’s rules apply, not the county’s. 5 rules below are quoted from official sources and independently re-checked, most recently on October 23, 2026. Rules for unincorporated land are on the Johnson County page.
Answers from the rulebook for Gardner
Gardner’s own rules
Owner-builder exemptionConditional
Owner-performed residential work on a home inside Gardner city limits
Owner performing the work must also submit a statement of homeowner installation with the building permit application.
Any contractor the owner hires must hold a Johnson County contractor's license, except fence and irrigation contractors.
“homeowners can work on their own homes; however, any contractor you hire must hold a johnson county contractor's license, with the exception of fence and irrigation contractors.”
Building code adoptedAdopted
Plan review and building inspections for construction inside Gardner city limits
Adopted by Ordinance No. 2674 on September 8, 2020, effective November 1, 2020.
Adopted codes: 2018 International Residential Code, 2018 International Mechanical Code, 2018 International Plumbing Code, 2018 International Building Code, 2018 International Fire Code, 2018 International Fuel Gas Code, 2017 National Electrical Code.
Codes are not available online; they can be viewed at the community development department in city hall (120 E. Main Street).
“the following codes to conduct plan reviews and building inspections were adopted september 8, 2020, and effective november 1, 2020, by ordinance no. 2674.”
Local zoningPresent (with conditions)
All land inside Gardner city limits
Zoning is administered through Title 17 Land Development Code, current as of May 5, 2025 online.
Ordinance No. 2871 amendments to chapters 17.01 to 17.03 were adopted February 16, 2026 and are not yet in the online version.
Zoning map amendments and planned developments are processed under Title 17.
“all properties within the city of gardner carry zoning district classifications that govern the use and development of the land.”
Mandatory utility hookupConditional
Properties proposed for development inside or entering Gardner city limits that want city utility service
Properties must be annexed into the city to access city utility services.
Annexation into the city is required before the city zoning and development review process starts.
No rule requiring a new home to connect to city sewer or water when available was located on the pages opened; Title 13 utilities not opened.
“properties proposed for development must be annexed into the city of gardner to access city utility services.”
Subdividing landRegulated (with conditions)
Any land inside Gardner city limits that is to be improved with buildings
Preliminary and final plats are required for larger divisions; administrative plats cover lot line adjustments, lot splits and lot combinations.
Land that does not adjoin city boundaries requires approvals from the Johnson County Board of County Commissioners before annexation.
“the city of gardner requires that all property be platted before any building permits may be issued for improvements to the property.”
Still unanswered
We looked and could not find an official answer yet. Silence is not permission; ask Gardner or Johnson County directly.
Inspections — Construction inspections inside Gardner city limits
Certificate of occupancy — Occupancy of a new home inside Gardner city limits
Minimum dwelling size — Minimum dwelling floor area inside Gardner city limits
Minimum lot size — Minimum lot size for single-family residential districts inside Gardner city limits
Setbacks — Yard setbacks for single-family residential districts inside Gardner city limits
14 more unanswered
Lot coverage
Building height
Living in an RV
Camping on your land
Tiny homes
Manufactured homes
Accessory dwellings
Off-grid sanitation
Well permit
Agricultural exemption
Driveway access
Building in a floodplain
Short-term rentals
Permit fees
Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.
Unanswered questions are usually a sign that Gardner publishes no rule on the point, not that none exists. Johnson County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Gardner means bringing your own water and power. The kit we’d start with:
