Reserve Now! Pricing and availability may change.

Lock & Guardian Self Storage

1536 Mullowney Ln #100, Billings, MT 59101
Discount Icon
10% Military discount
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10% Military discount (applies to active-duty only)

Available Storage Units (14)

5x10

$1.38 / sqft
small storage unit
Features
Roll Up DoorDrive Up AccessOutdoor Access1st Floor
$69.00
Reserve Now, Pay LaterYou will not be charged until move-in

5x10

$2.00 / sqft
small storage unit
Features
Roll Up DoorClimate Controlled1st FloorInterior
$100.00
Reserve Now, Pay LaterYou will not be charged until move-in

10x10

$0.89 / sqft
medium storage unit
Features
Roll Up DoorDrive Up AccessOutdoor Access1st Floor
$89.00
Reserve Now, Pay LaterYou will not be charged until move-in

10x10

$1.40 / sqft
medium storage unit
Features
Roll Up DoorClimate Controlled1st FloorInterior
$140.00
Reserve Now, Pay LaterYou will not be charged until move-in

10x15

$0.73 / sqft
medium storage unit
Features
Roll Up DoorDrive Up AccessOutdoor Access1st Floor
$109.00
Reserve Now, Pay LaterYou will not be charged until move-in

10x15

$1.17 / sqft
medium storage unit
Features
Roll Up DoorClimate Controlled1st FloorInterior
$175.00
Reserve Now, Pay LaterYou will not be charged until move-in

10x20

$0.65 / sqft
medium storage unit
Features
Roll Up DoorDrive Up AccessOutdoor Access1st FloorVehicle
$130.00
Reserve Now, Pay LaterYou will not be charged until move-in

12x25

$0.67 / sqft
large storage unit
Features
Roll Up DoorDrive Up AccessOutdoor Access1st FloorVehicle
$200.00
Reserve Now, Pay LaterYou will not be charged until move-in

10x30

$0.70 / sqft
large storage unit
Features
Roll Up DoorDrive Up AccessOutdoor Access1st FloorVehicle
$209.00
Reserve Now, Pay LaterYou will not be charged until move-in

12x30

$0.63 / sqft
large storage unit
Features
Roll Up DoorDrive Up AccessOutdoor Access1st FloorVehicle
$225.00
Reserve Now, Pay LaterYou will not be charged until move-in

10x20

$0.65 / sqft
medium storage unit
Features
Roll Up DoorDrive Up AccessOutdoor Access1st FloorVehicle
$130.00
Reserve Now, Pay LaterYou will not be charged until move-in

12x25

$0.67 / sqft
large storage unit
Features
Roll Up DoorDrive Up AccessOutdoor Access1st FloorVehicle
$200.00
Reserve Now, Pay LaterYou will not be charged until move-in

10x30

$0.70 / sqft
large storage unit
Features
Roll Up DoorDrive Up AccessOutdoor Access1st FloorVehicle
$209.00
Reserve Now, Pay LaterYou will not be charged until move-in

12x30

$0.63 / sqft
large storage unit
Features
Roll Up DoorDrive Up AccessOutdoor Access1st FloorVehicle
$225.00
Reserve Now, Pay LaterYou will not be charged until move-in

Complete Amenities & Features

About Lock & Guardian Self Storage

Lock & Guardian Self Storage provides an excellent self storage option for storage-seekers in the Billings, MT area Our facility is well-lit with electronic gate access only. We have numerous 24-hour high resolution video surveillance cameras and licence plate tracking to ensure your belongings are safe and sound

Thank you to our Military 1/2 off the first 4 months on any of our available storage unites, please show your military ID upon Move In.

ACCESS

  • Electronic gate accessElectronic gate access

SECURITY

  • Video cameras onsiteVideo cameras onsite
  • Fenced + LightedFenced + Lighted

OFFICE HOURS
SundayClosed
Monday8:00 AM – 5:00 PM
Tuesday8:00 AM – 5:00 PM
Wednesday8:00 AM – 5:00 PM
Thursday8:00 AM – 5:00 PM
Friday8:00 AM – 12:00 PM
SaturdayClosed
ACCESS HOURS
Sunday6:00 AM – 10:00 PM
Monday6:00 AM – 10:00 PM
Tuesday6:00 AM – 10:00 PM
Wednesday6:00 AM – 10:00 PM
Thursday6:00 AM – 10:00 PM
Friday6:00 AM – 10:00 PM
Saturday6:00 AM – 10:00 PM

VEHICLE STORAGE REQUIREMENTS

  • Requires titleRequires title
  • Requires insuranceRequires insurance

PROPERTY COVERAGE

  • Homeowners or renters insurance acceptedHomeowners or renters insurance accepted

PAYMENTS

  • CashCash
  • Credit cards accepted: Visa, MastercardCredit cards accepted: Visa, Mastercard
  • CheckCheck
  • Security deposit requiredSecurity deposit required

BILLING

  • Email invoicing availableEmail invoicing available
  • Automatic payments availableAutomatic payments available
  • Rent due on same day each month per lease startRent due on same day each month per lease start

MISCELLANEOUS

  • Paperwork can be done remotelyPaperwork can be done remotely

Customer Reviews

4.5(20)

Thank you for making an adjustment to fit my time schedule.

by Rod Dunker

October 16, 2025

5.0

THe service is greatly appreciated

great.

by Rick

April 7, 2024

5.0

great place

Very happy with Sari's customer service.

by Kevin Rowland

March 7, 2024

5.0

Nothing to review. I will keep typing until I hit the 30 minute character requirement.

Last min storage

by Genie Cabrera

July 31, 2023

5.0

Great service fast, n employees are very friendly

Great security

by Bobbi Bybee

May 22, 2023

5.0

Lock and Guardian kept my "treasures" safe and secure. I would use their services again!

How to Rent a Storage Unit With Storage.com

There are two easy ways to secure a unit at this storage facility

1You can complete your rental process online today and go straight to your unit when you plan to move in.
2You can make a reservation today with no payment until you sign your lease at your move-in date.
How It Works
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