Mountain Mini Storage is located in Sumas, WA just 3 blocks east of the Sumas/Huntingdon border crossing.

Our storage facility has Units ranging in size from 2ft. by 2ft. to 12ft. by 40ft. Units with a range of affordable and competitive prices, personalized friendly service and a convenient border location.

Outside/Lot Storage (RV’s, cars, trailers, etc.) - Contact the Office for Availability.

Storage Unit Sizes

  • *Contact Office for Availability.*
  • 5′ x 5′ (25 square feet)
  • 5′ x 12′(60 square feet)
  • 6′ x 12′(80 square feet)
  • 10′ x 12′(120 square feet)
  • 12′ x 20′(240 square feet)
  • 12′ x 30′(360 square feet)
  • 12′ x 40′(480 square feet)


Mini Storage
Call for Daily, Monthly and Annual pricing.

Current Special

Pay for 12 months of Storage, get 2 months free.
*New Storage Customers only. Not available for online reserves.*

Storage Tips

  • Pack stereos, skis, cameras and other valuables towards the rear of your space
  • Place frequently used items near the door and leave a path to the rear of the space
  • Leave an open-air space around the outside of your unit to aid in ventilation
  • Use the inside of appliances and dressers to store things
  • Stand sofas and mattresses on end
  • Pack books flat and in small boxes for easier lifting
  • Wedge appliance doors open
  • Store mirrors and pictures on edge–never flat
  • Use wardrobe boxes for storing clothing, and put shoes on bottom
  • Always drain all gas from lawn and garden equipment