Headquarters

353 Old Hays Rd.
Hays, MT 59527
406.673.3031
contact@islandmtn.com

Billings Office

1537 Avenue D
Billings, MT 59102
406.969.6777
contact@islandmtn.com

Havre Office

1753 U.S. Highway 2 – NW – SPC 36
Havre, MT 59501
406.400.2750
contact@islandmtn.com

Please complete the form below and a member of our team will respond within 2-3 business days.

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    HEADQUARTERS

    353 Old Hays Rd.
    Hays, MT 59527
    406.673.3031
    contact@islandmtn.com

    BILLINGS OFFICE

    1537 Avenue D
    Billings, MT 59102
    406.969.6777
    contact@islandmtn.com

    HAVRE OFFICE

    1753 U.S. Highway 2 – NW – SPC 36
    Havre, MT 59501
    406.400.2750
    contact@islandmtn.com

    OUR COMPANIES

    GVA Holdings, LLC
    Island Mountain Realty Holdings
    Classic Design Homes
    Snake Butte Construction

    COMMUNITY PARTNERS

    Aaniiih Nakoda Community Foundation
    Life’s Language Lodge
    Nakoda Aaniiih Economic Development Corporation

    © 2026 Island Mountain Development Group