Big Horn County, MT — 2026 Building Permit Guide

On this page 6

§ 01

Permit authority

Crow Tribe of Montana

Street address

P.O. Box 159, 43 Heritage Lane, Crow Agency, Montana 59022

Phone

(406) 638-1447

Coverage

The Crow Reservation and Crow Nation trust lands are under exclusive Crow tribal government authority for building permits and codes. State of Montana and Big Horn County permitting do NOT apply on tribal trust land. All construction on Crow trust land must comply with Crow Nation building codes and permit requirements (which may differ significantly from state requirements). State contractor licenses do NOT automatically satisfy tribal permit requirements. Tribal lands within Big Horn County include Crow Agency and surrounding reservation areas.

Website

Department website

§ 02

When a permit is required

Permit triggers and exempt work for Big Horn County

All building permits for new construction, additions, alterations on Crow tribal trust land must comply with Crow Nation requirements; contact tribal office for specific trigger requirements

Note: Information about exempt work categories not publicly available for Crow Nation. Contact Crow Tribe building department at (406) 638-1447 for exemption details.

Required documents

Tribal permit application form (obtain from tribal office)
Construction plans
Site plans
Proof of land status (trust land verification)
Estimated project valuation

Building code: Crow Nation maintains independent building codes; exact code standards not publicly specified online - contact tribal office
Permit validity: Contact tribal building department for permit validity duration
Owner-builder: Contact Crow Tribe building department; owner-builder rules may differ significantly from state rules
Contractor requirements: State contractor licenses do NOT automatically satisfy tribal permit requirements; contact Crow Tribe for tribal contractor requirements and any licensing/bonding needed

§ 03

Application process

Typical processing: Not publicly specified; contact Crow Tribe building department for estimate

01

Contact Crow Tribe building/codes department at (406) 638-1447 or visit tribal offices at 43 Heritage Lane, Crow Agency
02

Request permit application and determine specific requirements for planned project type
03

Prepare construction plans/drawings according to Crow Nation building code standards
04

Submit permit application and plans to tribal building department
05

Application reviewed by tribal building official
06

Pay permit fee
07

Receive tribal building permit
08

Schedule inspections with tribal building inspector
09

Complete required inspections
10

Receive approval upon final inspection

Typical processing time: Not publicly specified; contact Crow Tribe building department for estimate

Source: Crow Tribe of Montana ↗

§ 04

Fee schedule

Big Horn County building permit fees

Fee type

Amount

Permit fee formula

Contact tribal office; formula unknown

Payment method details not publicly available; contact tribal office at (406) 638-1447

§ 05

Required inspections

Scheduling and sequence

How to schedule

Contact Crow Tribe building/codes department to request inspections (phone)

Typical sequence: Contact tribal building department for inspection requirements and sequence

§ 06

Frequently asked

Common questions about unincorporated Big Horn County permits

01 Do I need a building permit in unincorporated Big Horn County, MT? ▸

All building permits for new construction, additions, alterations on Crow tribal trust land must comply with Crow Nation requirements; contact tribal office for specific trigger requirements

02 How much does a building permit cost in unincorporated Big Horn County, MT? ▸

Building permit fees in unincorporated Big Horn County, MT are set by the local building department and vary by project type and valuation. Fees are calculated as: Contact tribal office; formula unknown.

03 How do I apply for a building permit in unincorporated Big Horn County, MT? ▸

To apply for a building permit in unincorporated Big Horn County, MT, follow these steps: 1. Contact Crow Tribe building/codes department at (406) 638-1447 or visit tribal offices at 43 Heritage Lane, Crow Agency 2. Request permit application and determine specific requirements for planned project type 3. Prepare construction plans/drawings according to Crow Nation building code standards 4. Submit permit application and plans to tribal building department 5. Application reviewed by tribal building official 6. Pay permit fee 7. Receive tribal building permit 8. Schedule inspections with tribal building inspector 9. Complete required inspections 10. Receive approval upon final inspection

04 How long does it take to get a building permit in unincorporated Big Horn County, MT? ▸

Building permit processing times in unincorporated Big Horn County, MT typically run Not publicly specified; contact Crow Tribe building department for estimate. Timelines can vary based on project complexity and current department workload.

05 How do I schedule a building inspection in unincorporated Big Horn County, MT? ▸

Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in unincorporated Big Horn County, MT via: Contact Crow Tribe building/codes department to request inspections.

last verified March 2026 source Crow Tribe of Montana ↗ entry id permits/montana/big-horn/crow-reservation

Report a correction

Educational reference. Permit rules and fees change — confirm current requirements directly with Crow Tribe of Montana before applying. Jaspector is not legal advice.

Unincorporated Big Horn County