Plumbing and electrical work (greater than 90 volts) is regulated at the state level in Montana. All other construction work greater than $2,500 requires registration. To register, please contact the Contractor Registration Unit at 1-406-444-7734. To apply for a plumbing or electrical license, please contact the Business and Occupational Licensing Bureau at 1-406-841-2300.
Please select the license/exam that you are interested in.