OSM Services

Unique Western Ranch and Home Building Projects

OSM is a full service General Construction Company engaged primarily in the construction of architecturally unique residential and ranch projects of the highest quality, including horse and cattle facilities, as well as remodel and light commercial construction.

With established offices in Bozeman, MT and Jackson, WY, On Site Management’s distinctive work is found throughout Montana and Wyoming, including the resorts of Big Sky, Yellowstone Club, Moonlight Basin and Teton Village. OSM’s celebrated work can also be found throughout the Gallatin, Paradise and Big Hole Valleys.

Our services are best utilized when we are brought on board early in the design process, enabling the Owner and Architect to take advantage of our knowledge of materials, custom building techniques, costs, and production schedules to produce projects of the highest quality that meet budget and time constraints.

The following services are available through OSM:


Site Analysis - Soils, utilities, roads, power

Estimating - Preliminary program review, schematic design estimate, detailed C.S.I budgets

Value Engineering - Product research, alternate construction means & methods

Scheduling - Preliminary construction schedules, key dates for owner/architect, information requirements

Green Building Analysis - LEED certified, ground source heat energy

Construction Services

Infrastructure Development - Systems, domestic water, roads & parking

Temporary Facilities - Office & tool trailers, sanitary facilities, fire safety, site protection & erosion control

Labor Provided - Site supervision & general labor, steel erection, rough & finish carpentry, siding, door & window installation, log & heavy timber construction, full millwork & cabinetry production

Project Management - Cost accounting, scheduling, subcontractor bidding administration, materials procurement, quality control, labor & cost management, safety environment, warrant claims enforcement, daily logs, as-built drawings, operating & maintenance manuals

Additional Services and Resources 

OSM also maintains an inventory of reclaimed weathered cabins and barns, and both round and hand-hewn timbers (two-sided and four-sided). We also keep inventory of reclaimed dimensional materials, floor planking, and other nontraditional building materials. 

Our Cabinet Shop produces doors, cabinets and furniture.

“OSM’s technical capability, quality, and personalized project management is unsurpassed. We have been blessed to work with exceptional craftsmen before but never have we experienced such detail oriented managers and craftsmen whose adherence to specs produces this level of quality and timelines. Routine communications made this distant project feel like we were onsite.”   - BLA, Jefferson Valley