Installing Accessory Structure/Pre-Fab Shed/Storage Building

It’s about long term Building Efficiency and Safety!

Your pre-fab shed requires a permit and inspections. For Accessory Structure, or stick built sheds follow the detached garage guidelines page.

NOTE: Prefab sheds less than 200 square feet, on skids and movable Do Not require a permit. All setback requirements apply.






Permits Required

Your Accessory Structure will require a building permit. If your shed will be wired with electricity, you will also need an electrical permit. If your shed will feature running water, such as utility sink, you will also need a plumbing permit. Please gather the construction documentation specified below and submit a Building Permit Application, and an owner/contractor affidavit. After the building permit is filed, if applicable, have your licensed electrician submit an electrical permit application and/or have your licensed plumber submit an plumbing permit application . For electrical permit check with you local provider.

Permit Process

Many factors affect the speed with which your application(s) are approved. For best results, it is critical that you carefully review your application and design documents prior to submission to ensure that all necessary documents are included and that the design is compliant with county code. Normally, permits can be issued within 1 business day if the applications are complete, accurate, and code-compliant.


Construction Document Requirements

Submitted documents must contain sufficient information for the plan reviewer to be able to review the proposed construction.

  • Site Plan
  • Location of the proposed structure
  • Measurements from the proposed structure to each property line
  • Location of any existing structures
  • Location of existing/proposed driveway(s)
  • Location of all utilities and septic lines
  • Road Name









Your new structure will require a series of inspections throughout the building process. At a minimum, your pre-fab shed will require the following:

Building Inspections:

  1. 1. Footing
  2. 2. Foundation/Slab
  3. 3. Final

Electrical Inspections:

  • Sorry, Electrical services are not provided by our office. Please contact your local utility provider. Utilities in Roane County

Scheduling an Inspection

For scheduling please call our office: Roane County Building Codes at 865-717-4230 between the hours of 8:30 am and 4:00 pm for next day inspections.


Fees are based on the total cost of finished construction. Fee Sheet


Sorry, we are unable to accept credit/debit at this time.

ONLY Checks, Cash or Money Order are accepted. 

Regular office hours: Monday thru Friday 8:30 a.m. to 4:30 p.m. Phone calls after 4:00 p.m. must leave a message. Completed permit applications are accepted until 4:00 p.m.