Residential Information

The Union County Building Department has agreements with all municipalities to provide commercial and residential building code enforcement except Unionville Center, Plain City (incorporated areas), and the City of Dublin. The Dublin Building Department is the regulatory authority within the incorporated area of Dublin. Marysville, Richwood, Milford Center and Magnetic Springs have all contracted with Union County for building code services. The Union County Health Department's plumbing inspectors handle all areas within Union county. West Jefferson Building Department is the permitting authority for work inside Plain City (incorporated areas).

Getting Started:

Fee Schedule 
Residential Building Permit Requirements  (General Information FAQ Sheet)
Residential Plan Review Checklist & Guidelines 

Project-Specific Information:

Deck Requirements
Fabricated Storage Sheds 
Finished Basement Requirements 
Photovoltaic FAQ Sheet (Solar Panels)
Pole Building Structure Requirements 
Swimming Pool Requirements 

Additional Information:

Revision/ Correction/ Phased Plan Transmittal Form 
Demolition Permit Application Affidavit 
Propane Purveyor Installation Agreement 
Radon Control Methods (Link to 2024 IRC section BE101)
Residential Inspection Requirements 
Sample site plan