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Rent Self Storage Units in Box Elder, SD

We offer a wide variety of storage unit types and sizes to meet any requirements you might need. We take pride in making sure our storage units are clean, secure & most of all, affordable. Feel free to call us anytime for your unit or simply rent your storage unit below!

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12X30 (12 x 30 x 14)

Our 12x30 Units Offer Motion Sensor Lighting In The Unit And An Outlet for Trickle Chargers.

It fits the contents of a multi-bedroom house, including several oversized items like a couch, a refrigerator, a washer/dryer, and a dining room set or several large boxes.

$199 / month Waiting List

12X20 (12 x 20 x 10)

It fits the contents of an entire family room and two full bedrooms, including several small to medium-sized boxes.

$147 / month Waiting List

12x25 (12 x 25 x 12)

Ideal for small businesses, hobbyists, or those with substantial storage needs, our 12x25 units offer a generous 300 square feet of space. This size is equivalent to a large one-car garage, making it perfect for storing the contents of a multi-bedroom house, large furniture, or even small vehicles and boats.

$169 / month Waiting List

RV UNIT (14 x 50 x 14)

RV Unit 700 SQ FT With Outlet,Lights, Power Overhead Door - These units come with your own remote for the entrance of your unit with a $30.00 deposit on the remote.

$390 / month Waiting List

5x5 Climate Control (5 x 5 x 8)

This is a 5x5 Climate Control Unit 25 SQ FT

$72 / month Waiting List

5x10 Climate Control (5 x 10 x 8)

This is a 5x10 Climate Control Unit 50 SQ FT

$84 / month Waiting List

10x10 Climate Control (10 x 10 x 8)

This is a 10x10 Climate Control Unit 100 SQ FT

$119 / month

10x15 Climate Control (10 x 15 x 8)

This is a 10x15 Climate Control Unit 150 SQ FT

$145 / month

10x20 Climate Control (10 x 20 x 8)

This is a 10x20 Climate Control Unit 200 SQ FT

$189 / month

5x10 (5 x 10 x 10)

It fits furnishings of a mid-sized bedroom, including a queen-sized bed, a dresser, a TV and several small to medium-sized boxes. Door Size is 4'W x 8'H

$66 / month

10x30 (10 x 30 x 10)

300 SQ FT

$185 / month

10x10 (10 x 10 x 10)

100 SQ FT
It fits the contents of two full bedrooms, including several small to medium-sized boxes, and items such as mattress sets, sofas, chests of drawers, bookcases, and desks.

$84 / month Waiting List

10x20 (10 x 20 x 10)

200 SQ FT
It fits the contents of an entire family room and two full bedrooms, including several small to medium-sized boxes.

$121 / month

10X15 (10 x 15 x 10)

150 SQ FT
It fits the contents of an entire family room including several small to medium-sized boxes, and items such as mattress sets, sofas, chests of drawers, bookcases, and desks.

$104 / month Waiting List

12 x 40 x 10

12x40 Drive - Through Doors on both side of unit

$302 / month Waiting List

12x50 Drive Through Unit (12 x 50 x 10)

600 Sq Ft Drive Through Unit with Motion Senser Lights and Outlets

$318 / month Waiting List

12x25 - With Lights & Power (12 x 25 x 10)

Ideal for small businesses, hobbyists, or those with substantial storage needs, our 12x25 units offer a generous 300 square feet of space. This size is equivalent to a large one-car garage, making it perfect for storing the contents of a multi-bedroom house, large furniture, or even small vehicles and boats.

$179 / month Waiting List

12x60 Double Door Unit (12 x 60 x 12)

This 12x60 Storage Unit Features 4 Motion Sensor Lights, 2 Outlets and A Door On Each Side Of The Unit.

$350 / month Waiting List
CC93 H
CC81
CC67
CC64
CC53
CC80
CC105
CC21
CC79
CC68 H
CC16
CC63
CC52
CC41
CC15
CC38
CC17
CC18
CC19
CC20
CC22
CC54
CC29
CC2
CC9
CC35
CC36
CC44
CC45
CC46
CC47
CC48
CC49
CC50
CC51
CC13
CC28
CC6
CC39
CC1
CC3
CC4
CC5
CC7
CC8
CC10
CC11
CC12
CC14
CC31
CC30
CC27
CC26
CC25
CC24
CC23
CC32
CC33
CC34
CC37
CC40 H
CC42
CC43
CC60
CC76
CC77
CC78
CC72
CC73
CC74
CC75
CC62
CC71
CC55
CC56
CC57
CC58
CC59
CC61
CC65
CC66 H
CC69
CC70
CC90
CC91
CC104
CC96
CC97
CC98
CC99
CC100
CC101
CC102
CC103
CC82
CC85
CC86
CC87
CC88
CC89
CC92 H
CC94
CC95
CC84
CC83
D3
B3
C3
A2
B6
C6
C8
A1
A3
A4
A5H
A6H
B1
B2
B4
B5
C1
C2
C4
C5
C7
D1
D2
D4
D5
D6
D7
D8
D9
D10
A40
A41
A59H-A29H
A60-A30
A39
A42H
A38
A63-A33
A61-A31
A62-A32
B63-B33
B60-B30
B62-B32
B61-B31
B41-B11
B59H-B29H
B47H
A17
A28H
E5
A19
B48
B52
A27
A13
A14
A15
A16
A18
A24
A25
A26
A22
A23
A20
A21
B57
B54
B55
B56
B58
B49
B50
B51
B53
E1
E2
E3
E4
E6
A48
A49
A54
A58
B19
A44
A45
A46
A47
A50
A51
A52
A53
A55
A56
A57
A43
B27
B17
B20
B21
B22
B23
B24
B25
B26
B18
B28H
B16
B10
B8
B9
B12
B13
B14
B15
B42
B44
B43
B46
B38
B39
B40
B45
J15
C10
C57
C25
C49
C50
C51
C52
C45
C46
C47
C48
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C26
C27
C28
C29
C30
C53
C54
C55
C56
C37
C38
C39
C40
C41
C42
C43
C44
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J12
J13
J14
J16
J17
J18
J19
J20
J21
J22
J23
J24
J25
J27
J28
J29
J30
J26
D16
I10
D25
D53
D12
D13
D14
D15
D17
D18
D19
D20
D21
D22
D23
D26
D32
D56
D58
D60
D40
D41
D42
D43
D44
D45
D46
D51
D54
I1
I2
I3
I4
I5
I6
I7
I8
I9
I11
I12
I13
I15
I16
I17
I18
I19
I20
I21
I22
I23
I24
I25
I26
I27
I28
I30
E24
E46
E47
E12
E21
E19
E50
E8
E9
E10
E11
E13
E14
E15
E16
E17
E18
E20
E22
E23
E25
E26
E27
E57
E51
E52
E53
E54
E55
E56
E37
E38
E39
E40
E41
E42
E43
E44
E45
E48
E49
H1
H4
H5
H6
H7
H8
H9
H10
H11
H12
H13
H14
H15
H16
H19
H20
H21
H22
H23
H24
H25
H26
H27
H28
H29
H30
H2
H17
H3
H18
E28
G5
F19
F3
F1
F2
F4
F5
F6
F7
F8
F9
F10
F11
F12
F13
F14
F15
F16
F17
F18
F20
G1
G2
G3
G4
G6
G7
G8
G9
G10
G11
G12
G13
G14
G15
G16
G17
G18
G19
G20
C58-C31
I29-I14
D61-D33
D59-D31
D57-D29
D55-D27
D52-D24
North Of F Units. Outside Trailer Parking
South Of F Units Outdoor Trailer Parking
West Side Outdoor Parking
West Side parking outdoor parking #2
H Units Outdoor parking
G Units East Side Outdoor Parking
D47
D28
D30
D48
D49
D50
E29-E58
OFFICE
ENTR/EXIT
CLIMATE CONTROL
CLIMATE CONTROL
DOOR
DOOR
DOOR
CLIMATE CONTROL
CLIMATE CONTROL
CLIMATE CONTROL
CLIMATE CONTROL
MAIN GATE
GATE
GATE
GATE
AMERICAS WAY
AMERICAS WAY
N ELK VALE RD
N ELK VALE RD
N ELK VALE RD
DOOR
DOOR

Why Rent Storage Units from B-21 Self Storage?

Customer Service

It is our dedication to customer service that sets us apart. We are committed to offering you exceptional value for your hard earned money.

Rent Storage Units and Pay Online

Our website is easy to use and has all the features for a rich interactive experience. Rent your storage units online and pay your bill online 24-7. We make renting storage a hassle free experience.