Accessory Buildings

Buildings less than 120 square feet do not require a building permit unless they:
  • Are built on a permanent concrete foundation
  • Are served with electricity
  • Contain plumbing
If your building is less than 120 square feet, you are not required to obtain a building permit, but you are still required to follow the restrictions listed below.

Application Process
 A complete and accurate site plan showing the building location on the lot with respect to the existing structures and the required setbacks from the side and rear lot lines, is required with the permit application. Please review the Residential Accessory Building Guidelines (PDF) prior to beginning your project, and submit an Application for Accessory Building Permit.

Building Restrictions
  • Accessory buildings can be built in rear yards only and cannot have sidewalls over 15 feet measured from the bottom of the bottom plate to the top of the top plate. Multiple buildings are allowed as long as they do not total more than the combined floor space allowed for accessory structures sizes per the chart below. Side yard and rear yard setbacks are a minimum of six feet, measured from the drip line of the building roof to the property line. No accessory buildings shall be erected within ten feet of the existing house.
  • Accessory Structures to a residence on a single property shall not singularly or in total exceed the following structure sizes listed below for the main floor level.
  • All concrete slab-on-grade (monolithic slab) foundations and conventional foundations will have a footing a minimum of eight inches thick, a minimum of 18 inches below finished grade. Wooden foundations will be constructed of pressure treated lumber.
  • Buildings with sewer and water facilities must have the respective pipe ditches separated by ten feet. Ditches for sewer and water will be a minimum of 18 feet deep.

Graduated Increase in Accessory Structure Size

City Ordinance 405.640(c) (7)
Lot Size in Square Feet
Structure Size in Square Feet
0 - 7,000
7,001 - 9,000
9,001 - 12,000
12,001 - 21,780
21,781 - 43,560
43,561 - 65,340
65,341 - 87,120
87,121 - 108,900
108,901 - 217,800
217,801 or more
6,000 (for each 5 acres of property owned)
Permit Fees
The permit fee for accessory buildings with an area greater than 120 square feet is calculated by the total square footage of the structure multiplied by the ICC Building Valuation Data Table formula.

More Information

Permit applications are available at the City of Republic’s Planning and Development Office, located at 204 North Main Avenue (across from City Hall).

To schedule inspections, please call the City’s Inspection Hot-Line at 417-732-3170. For further information, call 417-732-3150.