Extra Space Storage - 11855 East 40th Avenue, Denver, CO 80239

4.7/5 - 634 Reviews
Location:
11855 East 40th Avenue, Denver, CO 80239
Office hours:
  • Mon-Fri: 9:30 a.m. - 6 p.m.
  • Sat: 9 a.m. - 5:30 p.m.

Extra Space Storage - 11855 East 40th Avenue, Denver, CO 80239

  • Climate-Controlled

    Protect belongings from temperature changes and humidity

  • Indoor

    Units are located indoors for added protection and convenience

  • Drive-Up Access

    Drive directly up to your unit for easy loading and unloading

    Not sure which size you need? Check our size guide to find the perfect fit.
    10x7 Self Storage 70 Sq. Ft.
    Climate-Controlled
    $191/mo
    10x5 Self Storage 50 Sq. Ft.
    $64/mo
    6x12 Self Storage 72 Sq. Ft.
    Climate-Controlled
    $195/mo
    5x10 Self Storage 50 Sq. Ft.
    $64 - $72/mo
    5x5 Self Storage 25 Sq. Ft.
    Climate-Controlled
    $71/mo
    5x5 Self Storage 25 Sq. Ft.
    $48 - $54/mo
    10x15 Self Storage 150 Sq. Ft.
    $217/mo
    10x12 Self Storage 120 Sq. Ft.
    Climate-Controlled
    $201/mo
    10x12 Self Storage 120 Sq. Ft.
    $154/mo
    10x10 Self Storage 100 Sq. Ft.
    $152/mo
    8x20 Vehicle 160 Sq. Ft.
    Car Storage Parking
    $112/mo
    20x20 Self Storage 400 Sq. Ft.
    $418/mo
    10x30 Vehicle 300 Sq. Ft.
    Drive-up Access Parking RV Storage
    $336/mo
    10x20 Self Storage 200 Sq. Ft.
    $240/mo
    10x20 Vehicle 200 Sq. Ft.
    Car Storage Drive-up Access Parking
    $194/mo
    No units are currently available.

    Amenities & features

    • Climate-Controlled
    • Indoor
    • Drive-Up Access
    • Onsite Manager
    • Contactless Renting
    • Security Camera
    • Gate
    • Parking
    • Credit Cards Accepted
    • Online Payment
    • RV Storage

    Customer reviews

    4.7/5
    Average rating
    634
    Number of reviews

    Read some helpful reviews of Extra Space Storage, shared by real renters with genuine experiences and honest opinions.

    Weird situation happened today. A skinny guy staff open the door while I was getting into my stuffs. Very unfriendly, I ask him is everything ok. He didn't respond, pretending to looking for something and then left. He came in just to look at me. This never happen with other staffs. He is the new guy that I never met before. I thought He was gonna do something to me or looking to steal my stuffs because now he knows what is unit. I will have to move out soon. Very uncomfortable. ... Read more
    Monroe - 24 September 2025
    Staff was nice enough, I had to get a bigger unit at move in and they helped without a fuss. Units were clean and doors weren't broken. My only gripe was that after 4 months their "promotional rate" expires, and they try to increase your monthly rate by almost 50%. I just moved my stuff to a different location rather than pay their increased price. ... Read more
    Dalton B. - 15 September 2025
    Yan truly is the best employee to have and that you want to do business with, he is beyond understanding and helpful as he listens to you like a conscious kind human who not just makes you feel heard but does his best to actually help you.. this man is why I chose ExtraSpace and the only reason I didn’t go with one cheaper and closer because this is the kind of person I want to work with and for as he needs to be in charge so that the service level/rating of any company he helps run will drastically increase as Yan knows how to help serve customers and is one of the people you meet that restores your faith in humanity! ... Read more
    Casey (. - 3 September 2025
    Jimena C. - 26 August 2025
    Valentino C. - 21 August 2025
    Jeff T. - 4 August 2025
    Patrick B. - 24 July 2025
    Been at the Denver location for sometime...I would only leave 2 stars if it wasn't for the Manager Cliff...Cliff has been very fair with me over the entire time I've been there...I've had some ups and downs... mostly downs...these last 4 years...he has always been fair and helpful..can't speak for the rest of the locations...but when I get my stuff out...I won't be a returning customer...to each there own...good luck... ... Read more
    Bell - 15 February 2025
    Previously had an account in Indiana. Moved to Denver and received a quote of $45. Since i already had an account they just asked to update my phone and email NOT my address. When my rate went up to $90 i never was informed of this via updated email or phone number i was however apparently sent a letter via mail to an old address in Indiana which was never updated. Was planning a camping trip over the summer and went to my storage unit to grab some things over the weekend. I noticed everything had been disorganized. When i spoke to the office staffed they mentioned someone had broken into several units earlier that week. Again was i never notified of this by either email or phone number until after the fact. I was then moved to an indoor unit which apparently is more secure 2 stars because this location is close to my downtown apartment and half the price of closer units. Only a 10 minute drive away ... Read more
    Brandon A. - 15 February 2025
    Andrea S. - 8 February 2025
    Let me start off with the fact that this is the most unsafe location I have used, and I've rented in several ESS locations around Denver. You can see in other reviews that units have been burglarized. Part of the issue is the area has a lot of homelessness. They rent units here and hang out in their units. I have come here in the evenings many times to find people sitting and even cooking inside units. On occasion you'll drive down one of the rows and see an open door on a unit get closed from the inside. There is a walk through gate that is only supposed to open from the inside, but it doesn't swing closed. The homeless will leave it ajar for their buddies to come in. The road in front will often have people living in their cars as well. The facility is also extremely tight and difficult to maneuver around. I have a Superduty F250 and it's very difficult to get to my unit. Safety is only part of the issue. I'm an over the road trucker who lives in my rig, so I store things I don't need with me. You always have to play the 'switch locations to get the online price' game when they get too high on rent. They play games with the rent. You'll get the the online price and then after 2 or 3 months they'll slowly start raising your rent. After a few raises I just go online and rent at a different location and move. This time, I've only been there 3 months and they've DOUBLED the rent. I was paying $43 a month for a 5X10 unit and got notice that they're raising it $83. I went online to see what they're currently renting for and their web rate for the same unit is $41, less than I'm paying. I also went and drove around the place and they have no less than 18 storage units vacant. I wanted to speak to a regional manager about the rent game and other issues so I called the office and left a message requesting the regional manager contact me. I get a call back from Cliff, who tells me he's the location manager. I ask him how I get in touch with the regional manager and he asked my "what do you need to speak to them for?" I told him that I wanted to speak to them about several things "including the freaking rent going up again." He became indignant, saying "He doesn't handle that I do, and you have to go through me. And you can get as angry and upset as you want but rents go up." He was very belligerent and testy, and I told him I still wanted to speak to the regional. He replied, "Well he's not going to help you, I'm the one who handles it, he's just going to pass it back to me, and if you want me to look into it I will, but I'm not going to let you bother him because he's busy." I said I don't understand why you're being aggressive but I don't appreciate the way you're behaving and I don't want to deal with you, you're being very rude and unprofessional. He then said you're the one being aggressive and saying the "freaking rent." I said freaking isn't a cuss word, I wasn't speaking angrily, I'm from NY and we say freaking all the time. It's not a cuss word. He said "It's a cuss word to me, and I don't care where you're from, I've been around the world twice, and you can call the corporate number if you want." I asked what's the regional managers name and he said "I'm not going to give that to you. You can just call the number on the website." I wasn't going to get anywhere talking to Cliff because she apparently is a very sensitive young lady. I hung up and called the toll free number on the website, but if you already have an account registered with your phone number it will recognize the number and reroute you back to the location office. I had to use one of my business lines to get through to customer service. I let the lady know about my experience and she apologized, saying that is not their policy and Cliffs behavior is unprofessional and not how they treat customers. I agreed with her. She said she would escalate the complaint to upper management, and I requested that I be called back. I will update once I speak to someone at corporate as well as to the regional manager. ... Read more
    O S. - 7 January 2025
    Got a call 1 hour before they closed. My unit was broken into. When I showed up, he was securing multiple units by putting screws on the doors. The employee working didn't seem to care much. He just said "what do you want to do? Move to another unit?". I asked if a police report was filed. He told no, that's on you... ... Read more
    Larry S. - 23 July 2024

    About this facility

    Located at 11855 East 40th Avenue, this Extra Space Storage facility offers a wide range of storage unit sizes, from small to large, ideal for meeting a variety of storage needs. Whether you’re storing a few personal items or larger household belongings, this facility provides flexible options.

    With climate-controlled units, this facility helps protect your belongings from Denver's fluctuating weather, particularly during the snowy winters and warm summers. The drive-up access and indoor units provide added convenience, making it easy to load and unload your items no matter the season. For those needing vehicle storage, the facility offers parking and RV storage, perfect for outdoor enthusiasts or Denver residents with limited residential space.

    Security is a priority here, with features like security cameras, gated access, and an onsite manager to give you peace of mind. The modern convenience of contactless renting and online payment makes this facility an excellent choice for busy individuals or families. Ideal for both short-term and long-term storage, this Extra Space Storage facility stands out as a reliable and convenient solution for Denver residents.

    Price comparison

    See how this facility's unit prices compare to others in Denver, broken down by size.

    Small $106/mo
    Location minimum Location maximum
    $14/mo $330/mo
    Medium $167/mo
    Location minimum Location maximum
    $39/mo $571/mo
    Large $297/mo
    Location minimum Location maximum
    $59/mo $1493/mo

    Location & walkability

    This storage facility is in an area with moderate walkability and some public transit options. A personal vehicle may be needed for certain trips.

    37

    out of 100

    Walk Score

    Car-Dependent

    Most errands require a car

    55

    out of 100

    Transit Score

    Good Transit

    Many nearby public transportation options

    52

    out of 100

    Bike Score

    Bikeable

    Some bike infrastructure

    Walk Score®: 37, Transit Score®: 55, Bike Score®: 52

    Neighborhood highlights

    Located near shopping, car wash stations, and other local conveniences, this storage facility helps you make the most of every visit.

    • Denny's

      Food & Drinks 0.1 miles

    • Rodeway Inn

      Services 0.1 miles

    • Motel 6 Denver - Airport

      Services 0.12 miles

    • Jenny's Market

      Grocery Stores 0.21 miles

    • Tony Roma's

      Food & Drinks 0.22 miles

    • Best Western Premier Denver East

      Services 0.22 miles

    • Conoco

      Services 0.22 miles

    • Stay Inn

      Services 0.24 miles

    • Popeyes

      Food & Drinks 0.27 miles

    Frequently Asked Questions

    The right storage unit size depends on what you plan to store and how much space you need to move around your items.

    5x5 or 5x10 units are great for smaller loads, such as chairs, lamps, small furniture pieces, boxes, books, and documents.

    10x10 or 10x15 units work well for larger furniture, bicycles, appliances, and the contents of a small apartment.

    10x20 or 10x30 units can typically fit the contents of a three-bedroom home, including large furniture and multiple appliances.

    If you’re unsure which size is best, a unit size calculator can help estimate the right fit based on the items you’re planning to store – helping you avoid paying for more space than you need.

    Climate-controlled storage units maintain consistent temperature and humidity levels, helping protect items from damage caused by heat, cold, or excess moisture.

    You may want climate control if you’re storing items that can be sensitive to temperature changes, such as furniture, clothing, appliances, paperwork, photographs, artwork, electronics, or wood and leather goods. These units are especially useful for long-term storage or in areas with hot summers, cold winters, or high humidity.

    If you’re storing durable items like tools or outdoor gear, a standard unit may be sufficient. When in doubt, climate control offers added protection and peace of mind.

    The facility at 11855 East 40th Avenue is accessible during regular access hours, typically Mon-Fri: 9:30 a.m. - 6 p.m., Sat: 9 a.m. - 5:30 p.m. Office hours and gate access times may differ, so it’s a good idea to check the facility’s posted schedule before your visit.

    To open your storage unit door, start by unlocking it, whether it uses a traditional padlock or a Bluetooth-enabled smart lock. Once unlocked, grab the bottom handle and lift or pull up the roll-up door until it’s fully open.

    If you’re using the unit for the first time, make sure the lock is properly removed before opening the door to avoid damage.

    Security helps protect your belongings while they’re in storage and gives you peace of mind between visits. Many self storage facilities use a combination of features such as video surveillance, gated access, on-site management, and well-lit premises to help deter unauthorized access.

    At Extra Space Storage - 11855 East 40th Avenue, available security amenities may include Security Camera, Gate, Onsite Manager, designed to help keep your items protected.

    Yes, most standard vehicles can be stored in self storage units. A 10x20 unit typically provides enough space for a car, while outdoor or designated parking areas may be available for larger vehicles.

    For safety reasons, most self storage facilities restrict certain items. These commonly include:

    • Hazardous, flammable, or toxic materials
    • Perishable food
    • Live plants or animals
    • Cash, firearms, or irreplaceable valuables

    Always check with the facility at 11855 East 40th Avenue for specific restrictions and recommendations.

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