4 – 6



8′ 6″

What You'll Love About the Columbia

This 40-foot certified RV includes various in-demand fixtures and finishes, such as hardboard siding, composition shingles, and a gabled roofline. The Columbia single-level floor plan offers accessibility with large rooms, 36-inch entry door and 32-inch pocket doors to the bathroom and bedroom, making it suitable for tiny home living. Optional features include a shed roof with a 40-year standing seam metal roofing and eaves, tall windows, and pine ceilings.

The standard entry features a 36-inch half-light door with a deadbolt and windows are made with residential vinyl high-efficiency Low E glazing, Argon gas-filled. The interior features a separate bedroom, large bathroom, kitchen with quartz counters and stainless steel appliances, and modern mat black cabinetry and door hardware. Standard features include LED TV, a heating and cooling system, and a 20-gallon electric water heater or optional on-demand tankless gas water heater. The Cottage series offers a new dimension to Tiny Mountain Houses’ selection of tiny houses.


Take a tour of the Columbia

Video Tour

Follow us on a video tour of the interior of our modern and luxurious Columbia model.

See More Examples Of Our Columbia Model

Looking for more of the Columbia model? Check out another video of this amazing tiny home.

Floor Plans & Key Details

House Length (Exterior)
Total Sqft
Interior Height
9′ 4″
Exterior Height
Exterior Width
4 – 6
Base Price


  • Deck over floorplan ( No wheel wells)


  • Residential vinyl high-efficiency Low E glazed, Argon gas 46” tall


  • Insulation Floor & Ceiling R19, Walls R-13


  • Residential siding exterior


  • Shutters on windows


  • Shingled composition roof – Black


  • Standard gabled roof pitch no overhangs or eaves


  • 36” half-light entry door with a deadbolt


  • Porch light Electrical outlet
  • Separate bedroom with a mirrored closet


  • Substantial kitchen with standard white quartz counters and backsplash


  • Stainless top mount kitchen sink with chrome faucet


  • Shaker style standard height white cabinets


  • Matte black cabinet and door hardware


  • Sheet Vinyl floors


  • LED can lights


  • USB outlet


  • Interior white wallboard & ceiling
    2-1/2” Baseboard and trimwork t/out
    Pocket doors 32” Bath and Bedroom
  • Prep for 30” electric range


  • 30” Black rangehood vented


  • Prep for 30” electric range


  • Prep for 30”x69” refrigerator


  • Space for stack washer dryer
  • 20-gallon electric tank water heater


  • Convection electric wall heater with thermostat in bedroom and living room


  • Pex and ABS plumbing


  • Main Electric 100 Amp, 240 V – All-electric system (requires hardwire on site)


  • 3” Septic drain exit


  • Threaded water connection
  • Top mount bath sink


  • Residential toilet


  • 48” Shower, One-piece


  • Mirror over sink


  • Shaker white cabinets