Self-storage Units in Longmont, CO at Castle Keep Storage

  • Low cost insurance available
  • Ground level access
  • Video Surveillance
  • RV/boat storage
View all features
  • Vehicle storage
  • Carts and dollies
  • Short and long term rentals
  • Boxes & moving supplies
  • Electronic gate access
  • Total account management
  • Online payments
  • Fenced/walled perimeter
  • We do not honor U-Haul 1 month FREE storage coupons
  • U-Haul trucks & trailers
  • Drive-up access
  • 2ND MONTH FREE W/1ST PAID:The 2nd full month will be free when a partial prorated month plus a full month is paid at the time of move-in on select units. Please call 303-678-0110 to confirm availability.

Available Rooms
(all room sizes are approximate)

Drive Up

Drive Up

The quickest way to unload your possessions is to drive right up to the front door of your room. Wide driveways and well-lit exteriors offer both convenience and security.

  • Example storage unit layout

    5' x 5' x 9'

    Drive Up 1st Floor Outside Level No Climate Rollup 1st Floor Outside Level No Climate Rollup Bonus
    Miscellaneous Storage (up to 2 rooms)
    *All Dimensions And Sizes Are Approximate.

    $60.00
    per month

  • Example storage unit layout

    5' x 10' x 9'

    Drive Up 1st Floor Outside Level No Climate Rollup 1st Floor Outside Level No Climate Rollup Bonus
    1-2 Bedroom Home (up to 1,200 sq. ft.)
    *All Dimensions And Sizes Are Approximate.

    $75.00
    per month

  • Example storage unit layout

    10' x 15' x 9'

    Drive Up 1st Floor Outside Level No Climate Rollup 1st Floor Outside Level No Climate Rollup Bonus
    2-3 Bedroom Home (1,600 - 2,000 sq. ft.)
    *All Dimensions And Sizes Are Approximate.

    $145.00
    per month

  • Example storage unit layout

    10' x 25' x 9'

    Drive Up 1st Floor Outside Level No Climate Rollup 1st Floor Outside Level No Climate Rollup Bonus
    4 Bedroom Home or larger (2,000 sq. ft. & above)
    *All Dimensions And Sizes Are Approximate.

    $200.00
    per month

U-Box® Containers for Moving and Storage

We deliver U-Box containers, you pack them up and we store them in our secure warehouse. Load at your own pace! Just give us a call when you want us to pick up or drop off your U-Boxes.

Learn more about U-Box storage containers

Reserve your self-storage unit today! Castle Keep Storage is one of our premier storage facilities in Longmont, CO that offer clean, dry and secure self-storage units. We have multiple sized storage units for your personal storage and moving needs. Ask about climate controlled self-storage units which may be available, priced at some of the lowest storage unit prices on the market.

Get Great Rates on Mini Storage in 80503

Storage facilities hours are subject to change however many of our self-storage facilities are open 24hrs and have extended access hours. Depending on your storage need and location, ask about RV storage, boat storage, vehicle self storage and motorcycle storage in Longmont, CO, 80503. Our U-Box portable storage may be a great fit for your moving and storage needs, ask us how we can help!

Customer Reviews

Danielle S. on

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Everything was perfect.

Meredith R. on

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Clean, secure storage.

Karen G. on

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Great, convenient location!

Alexander V. on

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Clean and secure storage.

Kate R. on

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Facility and staff were wonderful.

Mark W. on

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Excellent!

Fatma A. on

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Very happy I chose Castle Keep Storage.

Josefina Z. on

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price, management, location all excellent!

Noah P. on

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Nice, clean facility and a great location!

Bryan Y. on

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Great location, very convenient and very friendly staff

Clarence H. on

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Great location and friendly staff

kristy h. on

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The manager was really nice and to the point. Everything was explained to me and made sense. I've rented from here before so I know it's a secure facility.

Laura B. on

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Great location. Easy access and very clean!

Christiane R. on

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Very personable and attentive staff. Storage unit area well kept and clean with good security at the site. Sadly we had more stuff than the unit we reserved.

BRIAN N. on

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Had my Rv stored here over the winter. Never had an issue.

ELAINE F. on

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Great managers, they gave me a second month for free and they held a unit for me until I was able to get there. Great people

CLINTON C. on

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Great location and they helped me with my reservation for a uhaul truck

CRYSTAL S. on

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Manager always works with you and accommodates you to make sure you get what you need. They go beyond on helping their clients

RIANNE M. on

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I live in Lyons and this location is only 10 minutes drive and very good prices. The managers are friendly and make sure you are taken care of.

STEVE J. on

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Better then other facilities in town that are very expensive, this location is very convenient and you are able to drive in with a bug truck with out any issues.

LOUIE R. on

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Great people working here, the manager helped me transfer to a smaller unit once one became available. They make sure they take care of their clients.

AARON B. on

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Great location, clean and secured

JAMES P. on

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The kiosk at this location is awesome you can pay or rent a unit.

JASON M. on

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Good prices

CHARLES P. on

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Had a large storage unit for years at this location and when I finally moved out they set me up with a reservation for a Uhaul truck at a good price.

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