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(303) 321-3055

Mini U Storage - 3900 East 45th Avenue, Denver, CO 80216

Self Storage 50 - 200 Sq. Ft.
4.8/5 - 509 Reviews
(303) 321-3055
Location:
3900 East 45th Avenue, Denver, CO 80216
All units
Small
Medium
Large
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Units Availability
Small Storage Unit
5x10
Self Storage
50 Sq. Ft.
Drive-up Access
First Floor Access
$98/mo
Medium Storage Unit
10x15
Self Storage
150 Sq. Ft.
Drive-up Access
First Floor Access
$197/mo
Medium Storage Unit
10x10
Self Storage
100 Sq. Ft.
Drive-up Access
First Floor Access
$160/mo
Large Storage Unit
10x20
Self Storage
200 Sq. Ft.
Drive-up Access
First Floor Access
$274/mo

Amenities

  • Drive-Up Access
  • Retail Available
  • Onsite Manager
  • Truck Rentals
  • Security Camera
  • Gate
  • Parking
  • Credit Cards Accepted
  • First Floor Access
  • Online Payment

What customers are saying

4.8/5 - 509 Reviews

Read some helpful reviews of Mini U Storage at 3900 East 45th Avenue, shared by real renters with genuine experiences and honest opinions.

I have had the best experience here at this location! Andrea is the greatest!! I am from Texas here on business, Andrea has helped me every step of the way, and this is hands down one of the cleanest places I have ever visited or done business with. 10/10 recommended to anyone who is needing to store anything! ... Read more
Chance V. - 24 February 2026
Paul at Mini U Storage was fantastic to work with. He was friendly, knowledgeable, and made the entire process quick and stress-free. The facility is clean, secure, and well-run, and Paul’s customer service really stands out. Highly recommend ... Read more
John V. - 24 February 2026
Andrea is an amazing woman! It's so great to know that I can get the best customer service possible. Her staff is so great. Maintenance is awesome! It's a great location for a great price and amazing staff!! ... Read more
Julia P. - 23 February 2026
Ethan W. - 23 February 2026
????? Andrea is the reason this place deserves five stars. She went above and beyond—walked me through everything, personally showed me the unit, had it cleaned again just to be extra thorough, let me set my own gate PIN, and even offered supplies. Nothing felt rushed, nothing felt transactional—just genuinely supreme customer service. If you’re considering Mini U Storage in Denver, ask for Andrea. Absolute rockstar. ... Read more
Bubblegum G. - 24 January 2026
Jonathan L. - 28 August 2025
This has been the best experience I've had with a storage facility. They have great customer service and are willing to work with you. I would recommend to anyone e I know that needs a storage. Thank you Andrea and Tavon keep up the great work! ... Read more
Secrets K. - 28 June 2025
This was a great place to store additional stuff prior to a move. The location is very convenient and easy to access. The biggest perk of this place is their customer service. Great customer service is hard to come by these days, and I'm shocked whenever people are accommodating and kind. Every person I've talked to at this site has been kind, respectful, and super helpful! I would totally use this place again! ... Read more
Sukhmeet S. - 23 June 2025
Christina M. - 17 June 2025
The managers made the rental experience so easy and convenient for us. Having a truck rental to help move our things was a huge benefit as well. We appreciated the great customer service a lot! We highly recommend this facility for storage. ... Read more
Renee B. - 31 March 2025
Excellent Customer Service! They were very professional an helpful! I would definitely recommend to anyone! Andrea & Mike did ~~RAISE~~ WORTHY exemplary work!! I was blown away by their hospitality an kindness! ... Read more
Miranda - 31 March 2025
Sarah R. - 25 March 2025
Gigi - 4 March 2025
Chris L. - 28 October 2024

Overview

Located at 3900 East 45th Avenue in Denver, this Mini U Storage facility provides a range of unit sizes, including small, medium, and large, making it suitable for various storage needs. Whether you’re looking to store seasonal gear, furniture, or business equipment, there’s a space to match your requirements.

This facility is designed for convenience with drive-up access and first-floor access, ensuring effortless loading and unloading. For security, the property features a security camera system and an onsite manager, offering peace of mind for your belongings. If you need parking for your vehicle or temporary storage for larger items, this location has you covered. Additionally, gated access adds an extra layer of security.

For those in transition, this facility offers retail moving supplies and truck rentals to simplify your move. With options to pay online and by credit card, this Mini U Storage facility is an excellent option for residents and businesses alike in the Denver area.

Storage units in nearby cities

Want to see how Denver, CO, compares to other places? There are plenty of great options nearby. Glendale, CO, 6 miles away, has 1 self storage facility with rents starting from $56/month. Or you could drive to Commerce City, CO, just 8 miles distant to find other options, where the cheapest units in the 6 facilities there can be rented for $57/month. In Federal Heights, CO, just 10 miles away, there are 4 facilities available, offering rents as low as $15/month. Further out, Northglenn, CO (11 miles away), and Greenwood Village, CO (11 miles away), have 3 and 1 facilities, with minimum rents of $51 and $42, respectively.

Storage units in Glendale, CO Within a 6-mile radius
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Storage units in Federal Heights, CO Within a 10-mile radius
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Storage units in Northglenn, CO Within a 11-mile radius
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Storage units in Greenwood Village, CO Within a 11-mile radius
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Storage units in Boulder, CO Within a 27-mile radius
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Check out storage units in trending cities

Still looking for the ideal storage unit? For more great self storage options you wouldn't have to cross the state border: units can be leased in Colorado Springs, CO and Aurora, CO, starting from $9 and $20, respectively. Even more storage is available and with low starting rents, in Fort Collins, CO ($29), Lakewood, CO ($20) and Thornton, CO ($41).

Storage units in Aurora, CO
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Storage units in Fort Collins, CO
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13 Facilities
From $20/mo
Storage units in Thornton, CO
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Storage units in Arvada, CO
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33 Facilities
From $34/mo
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From $36/mo
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From $32/mo
Browse storage units in all Colorado cities.

Frequently Asked Questions

There is a wide array of amenities available for the storage units that Mini U Storage - 3900 East 45th Avenue has to offer. These amenities include Drive-Up Access, Retail Available, Onsite Manager, Truck Rentals, Security Camera, Gate, Parking, Credit Cards Accepted, First Floor Access and Online Payment. Most of these amenities can prove to be very useful depending on what you need to store. For example, climate-controlled units can come in handy for keeping sensitive items, drive-up access can make your loading and unloading process easier, and extra security measures will ensure your items are kept safe at all times.

The storage units offered by Mini U Storage - 3900 East 45th Avenue can satisfy all of your storage needs. Different sizes here range from 50 to 200 square feet. You can go for smaller units if you don't have a lot of items to store, while choosing a larger space is recommended in case you need to store a lot of furniture, bigger items or even vehicles.

The unit size that you should choose obviously depends on how much stuff you need to store. On the one hand, you should think of smaller units (5'x5' or 5'x10') as closets – they can be used to store chairs, lamps, moving boxes and sports equipment, along with smaller pieces of furniture, books and documents.

On the other hand, the 10'x10' and 10'x15' spaces are good for storing larger items of furniture, bicycles and a larger number of possessions. If you need even more space, then 10'x20' and 10'x30' units can easily accommodate the contents of an entire 3- or 4-bedroom house.

Storage units offered by Mini U Storage - 3900 East 45th Avenue come at a variety of prices, starting from $98 per month for typically smaller units. However, larger spaces can set you back up to $274 a month.

We know that when it comes to self storage, there is nothing more important than quickness and accessibility. Drive-up access is an extremely convenient amenity, as you can park your vehicle right next to your unit, making it significantly easier to load and unload the items you will use storage for. However, drive-up storage units tend to be outdoors, so you might consider indoor storage spaces with climate control if you're looking to keep temperature-sensitive items in peak condition.

Yes, you might, depending on what you need to put in storage. Climate-controlled spaces keep temperatures and humidity levels consistent all the time, which means they are perfect for storing sensitive items. Seeing that a whole host of things can be damaged by varying temperatures and excessive moisture, many people choose to rent climate-controlled units for personal items such as documents, photographs, paintings, collectibles, electronics, wooden furniture, antiques and even vehicles. If you're looking to store such items that are valuable to you, consider renting a climate-controlled unit!