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Extra Space Storage - 21892 Cobalt Avenue, Caldwell, ID

Self Storage, Car Storage, RV Storage 50 - 800 Sq. Ft.
4.8/5 - 298 Reviews
Location:
21892 Cobalt Avenue, Caldwell, ID 83605
All units
Small
Medium
Large
Parking
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Units Availability
Small Storage Unit
5x12
Self Storage
60 Sq. Ft.
$88/mo
Small Storage Unit
5x10
Self Storage
50 Sq. Ft.
$81/mo
Medium Storage Unit
10x15
Self Storage
150 Sq. Ft.
$141/mo
Medium Storage Unit
10x12
Self Storage
120 Sq. Ft.
$120/mo
Medium Storage Unit
10x10
Self Storage
100 Sq. Ft.
$107/mo
Large Storage Unit
30x15
Self Storage
450 Sq. Ft.
$342/mo
Large Storage Unit
24x30
Self Storage
720 Sq. Ft.
$458/mo
Large Storage Unit
24x25
Self Storage
600 Sq. Ft.
$343/mo
Large Storage Unit
20x40
Parking
800 Sq. Ft.
Parking
RV Storage
$373/mo
Large Storage Unit
20x15
Self Storage
300 Sq. Ft.
$278/mo
Large Storage Unit
12x40
Parking
480 Sq. Ft.
Parking
RV Storage
$261/mo
Large Storage Unit
12x30
Parking
360 Sq. Ft.
Drive-up Access
Parking
RV Storage
$305/mo
Large Storage Unit
12x25
Parking
300 Sq. Ft.
Drive-up Access
Parking
RV Storage
$278/mo
Large Storage Unit
10x40
Parking
400 Sq. Ft.
Parking
RV Storage
$229/mo
Large Storage Unit
10x30
Parking
300 Sq. Ft.
Drive-up Access
Parking
RV Storage
$278/mo
Large Storage Unit
10x25
Parking
250 Sq. Ft.
Drive-up Access
Parking
RV Storage
$243/mo
Large Storage Unit
10x20
Parking
200 Sq. Ft.
Car Storage
Drive-up Access
Parking
$208/mo
Large Storage Unit
8x25
Parking
200 Sq. Ft.
Car Storage
Parking
$79/mo

Amenities

  • Indoor
  • Drive-Up Access
  • Retail Available
  • Onsite Manager
  • Contactless Renting
  • Security Camera
  • Gate
  • Parking
  • Keyless Unit Access
  • Online Payment
  • RV Storage

What customers are saying

4.8/5 - 298 Reviews

Read some helpful reviews of Extra Space Storage at 21892 Cobalt Avenue, shared by real renters with genuine experiences and honest opinions.

I was SO pleased with Chelsea’s customer service. She made the experience personalized and felt like I was one of the only customers there! I recommend storing here to anyone that needs a storage unit! ... Read more
Cheyenne D. - 5 March 2026
I am extremely happy with the front desk receptionist, Chelsea at the Middleton storage. She was extremely patient and understanding when I had things going on. Her customer service skills are 10/10 in my opinion. She is extremely sweet and she was super helpful with my dad as well. Would definitely recommend them for a storage place. ... Read more
Meghan S. - 11 February 2026
Chelsea always went above and beyond, no matter the situation. She was ALWAYS cheerful, helpful and cordial. I had several constraints at the time I rented a unit there. Chelsea always managed to mitigate any potential stress I was having from a financial/payment standpoint and worked diligently with me to provide options and support. I rarely come across the level of customer service that Chelsea provides anymore and when I did experience quality service in the past, it would rarely repeat 24/7 quite like the way she has always provided. Thank you Chelsea!! ... Read more
Michael T. - 1 February 2026
Chelsea has been such a sweetheart and one of the best people i’ve ever worked with. she always has a smile and always helps me out when there’s a problem. it’s always a great pleasure working with her and she always has amazing customer service. She always goes above and beyond doing her job and i really appreciate her every single time i speak to her. ... Read more
Stacey A. - 26 November 2025
Reserved online the morning of and the units were ready when we got there. The facility is and service was outstanding. We had some unknown as far as when we would move out and they were upfront, but flexible. I will look to use them again if I ever need to. ... Read more
Ryan H. - 3 October 2025
I toured this facility and was very surprised with the upkeep, friendliness of staff, and all around quality of customer service. All my questions were answered and i was made to feel like my needs mattered! Could not be happier with my experience at this location. Would highly recommend others looking for storage to give this place a chance! ... Read more
Darren R. - 1 October 2025
Frank C. - 23 August 2025
Moving is never easy. Extra Space Storage took some of the sting out of it. The staff is very friendly and professional. Billing, payment and access to the locker was seamless. All in all a wonderful experience. I’d do it again in a heartbeat. ... Read more
lesscash - 31 July 2025
I can't say enough good things about this place. Chelsea and her team are top notch. The place is clean and secure. You won't find a better storage facility anywhere. Thanks for all your help. If I ever need to store anything again, it will definitely be there! ... Read more
Mike L. - 28 July 2025
I recently rented storage space at the Caldwell ID property. I had specific needs, and Chelsea was phenomenal in communicating with me and finding the right space. When I finally arrived, the entire staff was so friendly and helpful. I couldn’t be more pleased with the excellent customer service and cleanliness of Extra Space! Thanks for a great experience. ... Read more
Cindy P. - 8 April 2025
Omg! I even asked the ladies if they were from Middleton being a small time kindness and generosity given out. What a breath of fresh air I absolutely love this place if Anyone is checking reviews doing comparison this is a place that you can trust. They will work with you if there’s an issue with your account.. It just felt so “home” Thanks, ladies!! Just kindness and appreciate a human being coming through the door and not as a number To fit the Business quota. God bless Rhonda ... Read more
Rhonda M. - 5 April 2025
Really great service. I had reserved a unit in advance and then came by to check it out in person before purchase. They were running an online special at the time but when I finally got around to putting money down, the price had risen. Even so, I still received my rate that I had referenced when I first reserved the unit over the phone. Staff was friendly and explained everything very well. I’m happy with my choice! ... Read more
Aliya B. - 12 March 2025
Having multiple storage units in various states, the Extra Space Storage unit in Middleton, ID, is by far the easiest to work with. I am physically in Idaho only a few months of the year, yet I never worry about the items I have stored there. The property is well taken care of by the manager, Chelsea. They are easy to get in touch with and go above and beyond in the customer service department. I wish all the storage facilities I use were as reliable and accommodating as the Extra Space Storage in Middleton. ... Read more
Liz O. - 4 March 2025
If I could give no stars, I would. This place is absolutely horrible and anyone who stores their assets under the covered shelter is at SIGNIFICANT risk of having them stolen, like I experienced. My ATV and trailer were stolen out of the facility within the past day or two. Fortunately, it was found north of Middleton but it was damaged. I called them and they said "sorry, we're not liable for damage." Actually, that's not true when they're negligent - they have a duty to provide a secure storage facility and they don't. The damage to the property occurred after it was stolen. But the attorney I'm hiring will sort that out. When I got there today, there was a sign saying they're closed for the day, yet the man door right next to the big gate was left open. WHY DO YOU EVEN HAVE A MAN DOOR THERE IN THE FIRST PLACE??? When I took my ATV back over there on 2/18, it was before hours and the big gate was just standing open. I called them to alert them to that security risk and the response was "yeah, when it's foggy the sensor just thinks something is in the way so the gate stays open." They continue to be negligent in protecting their customers' property. I hope the cops can identify the vehicle through the security footage and I fully intend on pressing charges. I'm also going to ensure that Extra Space Storage is held accountable. If you have stuff there or are considering them, you've been warned. ... Read more
Brian H. - 27 February 2025

Nearby Storage Units

$76 - $650

Republic Storage - 10150 Highway 44, Middleton, ID

SELF STORAGE, RV STORAGE
1.43 miles away
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Public Storage - 809 South KCID Road, Caldwell, ID

SELF STORAGE, CAR STORAGE, RV STORAGE, BOAT STORAGE
1.97 miles away
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Stor - It Self Storage - 2412 East Chicago Street, Caldwell, ID

SELF STORAGE, CAR STORAGE, RV STORAGE
3.39 miles away
$45 - $90

Easy Access Storage - 14852 Highway 44, Caldwell, ID

SELF STORAGE, CAR STORAGE, RV STORAGE, BOAT STORAGE
3.92 miles away
Image for Ustick Storage - 17848 Middleton Road, Nampa, ID No Photo Available
$40 - $130

Ustick Storage - 17848 Middleton Road, Nampa, ID

SELF STORAGE, CAR STORAGE, RV STORAGE
4.01 miles away

Storage units in nearby cities

Here is how Caldwell, ID, compares to other nearby cities. There is one more great self storage opportunity in the area. Ontario, OR, is just 34 miles away and has 3 storage facilities. Monthly rents there start at $45.

Storage units in Ontario, OR Within a 34-mile radius
3 Facilities
From $45/mo

Check out storage units in trending cities

If you want to see how your city compares to others, you can start by checking out other facilities in trending cities. A wide array of storage units can be leased in Boise City, ID, Meridian, ID and Nampa, ID, where sizes and amenities may vary. Monthly rents for units in these cities are as low as $30, $33 and $25, respectively.

Storage units in Boise City, ID
49 Facilities
From $30/mo
Storage units in Meridian, ID
22 Facilities
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Storage units in Nampa, ID
28 Facilities
From $25/mo
Storage units in Coeur d'Alene, ID
14 Facilities
From $46/mo
Storage units in Post Falls, ID
22 Facilities
From $30/mo
Storage units in Eagle, ID
3 Facilities
From $44/mo
Storage units in Kuna, ID
4 Facilities
From $55/mo
Storage units in Moscow, ID
4 Facilities
From $40/mo
Storage units in Hayden, ID
11 Facilities
From $45/mo
Storage units in Star, ID
1 Facility
From $32/mo
Storage units in Garden City, ID
2 Facilities
From $30/mo
Storage units in Rathdrum, ID
9 Facilities
From $60/mo
Storage units in Middleton, ID
2 Facilities
From $76/mo
Storage units in Payette, ID
3 Facilities
From $30/mo
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3 Facilities
From $54/mo
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From $45/mo
Browse storage units in all Idaho cities.

Frequently Asked Questions

Storage units available at Extra Space Storage - 21892 Cobalt Avenue include the following amenities: Indoor, Drive-Up Access, Retail Available, Onsite Manager, Contactless Renting, Security Camera, Gate, Parking, Keyless Unit Access, Online Payment and RV Storage. Depending on what you need to put away in storage, you can discover there are some things you absolutely need, so make sure you check with the facility manager that you'll find everything you need on site.

This particular storage facility provides self storage units of different sizes, ranging from 50 to 800 square feet. Space is not an issue! If you have more belongings to store, or simply bulkier items or even vehicles, you should go for larger storage units.

You already know how much stuff you need to put in self storage, so figuring out the unit size you need is the next step. Smaller units such as 5'x5' or 5'x10' spaces can usually be filled with the amount of items you would normally store in a closet: a few chairs and lamps, sports equipment, garden tools and some boxes.

Moving on to larger sizes, imagine the 10'x10' and 10'x15' units as similar to a bedroom or a living room – larger pieces of furniture, sturdier equipment and bicycles can fit here. Finally, a 10'x20' unit has enough space for the contents of a 3-bedroom house, while the larger 10'x30' space easily accommodates the contents of a loaded semi-truck.

Monthly prices for units offered by Extra Space Storage - 21892 Cobalt Avenue start from $79 and can go up to $458 for larger spaces.

Accessibility and quickness are key when it comes to storage, so drive-up storage units are generally regarded as very convenient. Pull your car right up to your storage space, load, unload, and you're good to go! However, if you're mostly storing temperature-sensitive items, you should rather consider indoor storage units.

Climate-controlled units maintain consistent temperatures and humidity levels all year round, making them perfect for all your sensitive items. Moisture and varying temperatures can damage a whole host of things, and that is why a lot of people choose to use climate-controlled units to store items like wooden furniture, electronics, artwork, documents and photographs, collectibles, antiques, etc. If the belongings you're storing are important to you, you should consider renting a climate-controlled unit.