Building Changes Permits

When Do You Require a Building Permit?

Building permits must be obtained from the Montville Construction Department before making any of the following changes to a building:

  • Replacing a roof (COMMERCIAL ONLY)
  • Adding a bedroom or bathroom
  • Adding an addition
  • Interior alterations
  • Constructing a deck
  • Enclosing a porch
  • Replacing an electric stove with a gas stove
  • Finishing a basement
  • Converting from oil to gas 
  • Removal or installation of an oil tank (tanks abandoned in place previously do not require a permit)