Billings Montana Residential Building Permit Guide

Billings requires building permits for many private-property construction projects including roofing, siding, decks, retaining walls, parking lots, and taller fences.

Permit takeaway

Billings says a building permit is required for almost any type of construction on private property, including roofing, siding, decks, parking lots, fences at or above the listed height threshold, and retaining walls exceeding four feet.

Zoning and placement

Planning review can be needed for fences, setbacks, lot coverage, and site-plan issues even when a project is not a full building-plan submittal.

Building and trade review

Building permit applications are submitted through the GoPost online portal, while residential roofing, siding, windows, and doors may be submitted by email.

Call before applying when

Call before applying if the project includes a deck, roof, siding, parking area, retaining wall over four feet, fence over six feet, right-of-way work, or unclear setbacks.

Documents to prepare

• Building permit application
• Site plan
• Residential plan checklist
• Project drawings
• Contractor or owner information

Inspection planning

• Submit through the correct portal or email path
• Wait for review
• Keep approved plans available
• Request inspections by phone or email
• Complete final inspection

Official sources

• Billings Building FAQ
• Billings Applications and Forms
• Billings Building FAQ Full Page

This guide is a planning summary. Always verify the current requirements with the local office before starting work.