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Extra Space Storage - 21121 NW Service Road, Warrenton, MO 63383

Self Storage, Car Storage, RV Storage 25 - 750 Sq. Ft.
4.8/5 - 264 Reviews
Location:
21121 NW Service Road, Warrenton, MO 63383
All units
Small
Medium
Large
Parking
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Units Availability
Small Storage Unit
10x5
Self Storage
50 Sq. Ft.
Climate-Controlled
$72/mo
Small Storage Unit
5x15
Self Storage
75 Sq. Ft.
$52/mo
Small Storage Unit
5x12
Self Storage
60 Sq. Ft.
$45/mo
Small Storage Unit
5x10
Self Storage
50 Sq. Ft.
Climate-Controlled
$72/mo
Small Storage Unit
5x10
Self Storage
50 Sq. Ft.
$41/mo
Small Storage Unit
5x5
Self Storage
25 Sq. Ft.
Climate-Controlled
$45/mo
Medium Storage Unit
10x18
Self Storage
180 Sq. Ft.
$109/mo
Medium Storage Unit
10x15
Self Storage
150 Sq. Ft.
Climate-Controlled
$137/mo
Medium Storage Unit
10x15
Self Storage
150 Sq. Ft.
$96/mo
Medium Storage Unit
10x12
Self Storage
120 Sq. Ft.
$83/mo
Medium Storage Unit
10x10
Self Storage
100 Sq. Ft.
Climate-Controlled
$103/mo
Medium Storage Unit
10x10
Self Storage
100 Sq. Ft.
$74/mo
Large Storage Unit
15x50
Self Storage
750 Sq. Ft.
$369/mo
Large Storage Unit
15x25
Self Storage
375 Sq. Ft.
Climate-Controlled
$261/mo
Large Storage Unit
15x20
Self Storage
300 Sq. Ft.
Climate-Controlled
$228/mo
Large Storage Unit
15x15
Self Storage
225 Sq. Ft.
Climate-Controlled
$185/mo
Large Storage Unit
10x45
Self Storage
450 Sq. Ft.
$243/mo
Large Storage Unit
10x40
Self Storage
400 Sq. Ft.
Climate-Controlled
$350/mo
Large Storage Unit
10x35
Self Storage
350 Sq. Ft.
$200/mo
Large Storage Unit
10x30
Parking
300 Sq. Ft.
Drive-up Access
Parking
RV Storage
$172/mo
Large Storage Unit
10x30
Self Storage
300 Sq. Ft.
$172/mo
Large Storage Unit
10x25
Self Storage
250 Sq. Ft.
Climate-Controlled
$199/mo
Large Storage Unit
10x25
Parking
250 Sq. Ft.
Drive-up Access
Parking
RV Storage
$154/mo
Large Storage Unit
10x20
Self Storage
200 Sq. Ft.
Climate-Controlled
$169/mo
Large Storage Unit
10x20
Parking
200 Sq. Ft.
Car Storage
Parking
$37 - $125/mo

Amenities

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

What customers are saying

4.8/5 - 264 Reviews

Read some helpful reviews of Extra Space Storage at 21121 NW Service Road, shared by real renters with genuine experiences and honest opinions.

Ashlee H. - 25 February 2026
Todd H. - 23 January 2026
Nancy “. - 10 October 2025
PROFESSIONAL/ TIMELY/ CONSIDERATE! The Warrenton team for Extra Space Storage is exceptional! Their customer service has always been notable, but their ability and willingness to navigate technical issues went above and beyond. When your family is counting on maintaining a safe environment for their memories & household belongings, the location you choose to store them can make or break the future. Thank you to everyone at Extra Space Storage (all 3 sites) for troubleshooting with me, to reach the desired outcome. John, Dawn, and Nicole- my family is forever grateful ?? . ... Read more
Tegin H. - 18 July 2025
I went in to get some information about storage options and had a great experience. The store manager was friendly, knowledgeable, and took the time to explain everything clearly. They made the whole process easy and stress-free. Highly recommend if you're looking for great customer service and helpful staff! ... Read more
Sarah c. - 26 June 2025
Brandon G. - 14 June 2025
Nathan D. - 9 April 2025
kahisha - 2 September 2024

Overview

Located at 21121 NW Service Road, this Extra Space Storage facility in Warrenton, MO, offers a range of units in small, medium, and large sizes to meet various storage needs. With climate-controlled units, this facility is ideal for protecting sensitive items against Missouri's humidity and temperature fluctuations.

This facility is packed with modern conveniences, including drive-up access, which makes loading and unloading a breeze, and indoor storage to keep belongings shielded from the elements. For those with larger vehicles, it also offers parking and RV storage, making it a practical choice for vehicle owners. Safety is a priority here, with features such as a secure gate, security cameras, and an onsite manager to provide peace of mind.

Additional perks include contactless renting, online payment options for hassle-free management, and a retail section with moving supplies. This facility is ideal for anyone in the Warrenton area seeking secure, flexible storage solutions with advanced features.

Nearby Storage Units

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Storage units in nearby cities

Want to see how Warrenton, MO, compares to other places? There are plenty of great options nearby. Wentzville, MO, 19 miles away, has 6 self storage facilities with rents starting from $15/month. Or you could drive to Washington, MO, just 21 miles distant to find other options, where the cheapest units in the 5 facilities there can be rented for $33/month. In Lake Saint Louis, MO, just 22 miles away, there are 4 facilities available, offering rents as low as $11/month. Further out, Union, MO (29 miles away), and Chesterfield, MO (34 miles away), have 6 and 2 facilities, with minimum rents of $10 and $21, respectively.

Storage units in Wentzville, MO Within a 19-mile radius
6 Facilities
From $15/mo
Storage units in Washington, MO Within a 21-mile radius
5 Facilities
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Storage units in Lake Saint Louis, MO Within a 22-mile radius
4 Facilities
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Storage units in Union, MO Within a 29-mile radius
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From $10/mo
Storage units in Chesterfield, MO Within a 34-mile radius
2 Facilities
From $21/mo
Storage units in Ellisville, MO Within a 36-mile radius
4 Facilities
From $14/mo
Storage units in Eureka, MO Within a 38-mile radius
4 Facilities
From $40/mo
Storage units in Ballwin, MO Within a 38-mile radius
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Storage units in Maryland Heights, MO Within a 40-mile radius
1 Facility
From $104/mo
Storage units in Manchester, MO Within a 41-mile radius
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From $44/mo
Storage units in Creve Coeur, MO Within a 41-mile radius
2 Facilities
From $55/mo
Storage units in Bridgeton, MO Within a 42-mile radius
4 Facilities
From $24/mo
Storage units in Valley Park, MO Within a 42-mile radius
3 Facilities
From $35/mo
Storage units in High Ridge, MO Within a 43-mile radius
3 Facilities
From $40/mo
Storage units in Cedar Hill, MO Within a 44-mile radius
1 Facility
From $53/mo
Storage units in Hazelwood, MO Within a 44-mile radius
4 Facilities
From $16/mo
Storage units in Saint Ann, MO Within a 44-mile radius
2 Facilities
From $7/mo
Storage units in Murphy, MO Within a 45-mile radius
3 Facilities
From $38/mo
Storage units in Kirkwood, MO Within a 45-mile radius
1 Facility
From $52/mo
Storage units in Overland, MO Within a 45-mile radius
5 Facilities
From $23/mo

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 Kansas City, MO and Saint Louis, MO, starting from $14 and $16, respectively. Even more storage is available and with low starting rents, in Springfield, MO ($28), Saint Charles, MO ($15) and Independence, MO ($11).

Storage units in Kansas City, MO
52 Facilities
From $14/mo
Storage units in Saint Louis, MO
16 Facilities
From $16/mo
Storage units in Springfield, MO
49 Facilities
From $28/mo
Storage units in Saint Charles, MO
22 Facilities
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Storage units in Independence, MO
14 Facilities
From $11/mo
Storage units in O'Fallon, MO
10 Facilities
From $10/mo
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10 Facilities
From $49/mo
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Browse storage units in all Missouri cities.

Frequently Asked Questions

There is a wide array of amenities available for the storage units that Extra Space Storage - 21121 NW Service Road has to offer. These amenities include Climate-Controlled, Indoor, Drive-Up Access, Retail Available, Onsite Manager, Contactless Renting, Security Camera, Gate, Parking, Credit Cards Accepted, Multi-Level Storage, Online Payment and RV Storage. 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 Extra Space Storage - 21121 NW Service Road can satisfy all of your storage needs. Different sizes here range from 25 to 750 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 Extra Space Storage - 21121 NW Service Road come at a variety of prices, starting from $37 per month for typically smaller units. However, larger spaces can set you back up to $369 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!