
modSTORAGE (ex-21CSS)
3503 B Street, Philadelphia, PA 19134
modSTORAGE (ex-21CSS) in B Street
Welcome to modSTORAGE (ex-21st Century Storage) in Philadelphia, nestled between Fishtown and historic Kensington. We're soon upgrading to the NOKE by Janus system for unmatched security. Perfect for locals and businesses, our climate-controlled units cater to all storage needs.
Enjoy our amazingly low web rates, underscoring our commitment to affordable storage. We stand out with flexible payment options and a customer-first approach. Our loyalty program offers extra value for our long-term patrons.
Situated minutes from Fishtown and Kensington, discover why we're Philadelphia's top choice for storage. Secure, convenient, reliable - come experience the difference with us.
Visit near B St and E Allegheny Ave, by the Delaware River, for your clutter-free journey."
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| Small | 5' x 5' Unit
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| Store Rate $37.99Web Rate: $21.99 | SelectClose No Credit Card Required |
| Small | 5' x 5' Unit
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| Store Rate $39.99Web Rate: $24.99 | SelectClose No Credit Card Required |
| Small | 5' x 8' Unit
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| Store Rate $49.99Web Rate: $29.99 | SelectClose No Credit Card Required |
| Small | 5' x 8' Unit
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| Store Rate $59.99Web Rate: $34.99 | SelectClose No Credit Card Required |
| Medium | 5' x 15' Unit
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| Store Rate $64.98Web Rate: $37.99 | SelectClose No Credit Card Required |
| Medium | 8' x 10' Unit
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| Store Rate $69.99Web Rate: $39.99 | SelectClose No Credit Card Required |
| Medium | 10' x 10' Unit
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| Store Rate $84.99Web Rate: $39.99 | SelectClose No Credit Card Required |
| Small | 5' x 10' Unit
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| Store Rate $79.99Web Rate: $44.99 | SelectClose No Credit Card Required |
| Small | 5' x 5' Unit
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| Store Rate $84.99Web Rate: $49.99 | SelectClose No Credit Card Required |
| Small | 5' x 10' Unit
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| Store Rate $84.99Web Rate: $49.99 | SelectClose No Credit Card Required |
| Small | 5' x 10' Unit
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| Store Rate $94.99Web Rate: $54.99 | SelectClose No Credit Card Required |
| Medium | 6' x 10' Unit
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| Store Rate $129.99Web Rate: $74.99 | SelectClose No Credit Card Required |
| Medium | 10' x 10' Unit
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| Store Rate $159.99Web Rate: $74.99 | SelectClose No Credit Card Required |
| Medium | 5' x 15' Unit
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| Store Rate $137.99Web Rate: $77.99 | SelectClose No Credit Card Required |
| Small | 5' x 10' Unit
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| Store Rate $139.99Web Rate: $79.99 | SelectClose No Credit Card Required |
| Small | 5' x 10' Unit
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| Store Rate $139.99Web Rate: $79.99 | SelectClose No Credit Card Required |
| Medium | 8' x 10' Unit
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| Store Rate $139.99Web Rate: $79.99 | SelectClose No Credit Card Required |
| Medium | 5' x 15' Unit
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| Store Rate $144.99Web Rate: $81.99 | SelectClose No Credit Card Required |
| Medium | 8' x 10' Unit
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| Store Rate $144.99Web Rate: $81.99 | SelectClose No Credit Card Required |
| Medium | 10' x 10' Unit
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| Store Rate $169.99Web Rate: $84.99 | SelectClose No Credit Card Required |
| Medium | 5' x 15' Unit
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| Store Rate $169.99Web Rate: $94.99 | SelectClose No Credit Card Required |
| Medium | 5' x 15' Unit
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| Store Rate $169.99Web Rate: $94.99 | SelectClose No Credit Card Required |
| Large | 10' x 15' Unit
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| Store Rate $194.99Web Rate: $119.99 | SelectClose No Credit Card Required |
| Large | 10' x 18' Unit
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| Store Rate $199.99Web Rate: $124.99 | SelectClose No Credit Card Required |
| Large | 10' x 15' Unit
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| Store Rate $314.99Web Rate: $199.99 | SelectClose No Credit Card Required |
| Large | 10' x 15' Unit
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| Store Rate $314.99Web Rate: $199.99 | SelectClose No Credit Card Required |
| Large | 15' x 15' Unit
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| Store Rate $319.99Web Rate: $204.99 | SelectClose No Credit Card Required |
| Large | 10' x 25' Unit
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| Store Rate $326.99Web Rate: $214.99 | SelectClose No Credit Card Required |
| Large | 10' x 18' Unit
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| Store Rate $404.99Web Rate: $289.99 | SelectClose No Credit Card Required |
| Large | 10' x 18' Unit
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| Store Rate $404.99Web Rate: $289.99 | SelectClose No Credit Card Required |
| Large | 10' x 20' Unit
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| Store Rate $414.99Web Rate: $299.99 | SelectClose No Credit Card Required |
| Large | 10' x 20' Unit
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| Store Rate $414.99Web Rate: $299.99 | SelectClose No Credit Card Required |
| Large | 10' x 22' Unit
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| Store Rate $424.99Web Rate: $304.99 | SelectClose No Credit Card Required |
| Large | 10' x 22' Unit
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| Store Rate $424.99Web Rate: $304.99 | SelectClose No Credit Card Required |
| Large | 10' x 27' Unit
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| Store Rate $529.99Web Rate: $379.99 | SelectClose No Credit Card Required |
| Large | 10' x 27' Unit
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| Store Rate $529.99Web Rate: $379.99 | SelectClose No Credit Card Required |
| Large | 10' x 30' Unit
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| Store Rate $554.99Web Rate: $399.99 | SelectClose No Credit Card Required |
| Large | 10' x 30' Unit
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| Store Rate $554.99Web Rate: $399.99 | SelectClose No Credit Card Required |
Reserve for FREE! (855) 596-7884
Facility Hours
Office Hours
- Mon:09:00 AM - 06:00 PM
- Tue:09:00 AM - 06:00 PM
- Wed:09:00 AM - 06:00 PM
- Thu:09:00 AM - 06:00 PM
- Fri:09:00 AM - 06:00 PM
- Sat:09:00 AM - 05:00 PM
- Sun:09:00 AM - 04:00 PM
Access Hours
- Mon:06:00 AM - 06:00 PM
- Tue:06:00 AM - 06:00 PM
- Wed:06:00 AM - 06:00 PM
- Thu:06:00 AM - 06:00 PM
- Fri:06:00 AM - 06:00 PM
- Sat:06:00 AM - 05:00 PM
- Sun:06:00 AM - 04:00 PM
Facility Amenities
- Cash Accepted
- Checks Accepted
- Credit Cards Accepted
- Military / Student Discount
- Moving Supplies
- Vehicle Required Title
- Vehicle Requires Insurance
- Vehicle Requires Registration
- Truck Rental
- Cameras
- Keypad Gate Access
- Fenced and Lighted
- Handcarts and Dollies
- Online Bill Pay
- Automatic Payments
- Online Payments
Facility Map
Frequently Asked Questions
Does modSTORAGE (ex-21CSS) at 3503 B Street has first floor or ground floor storage?
A ground floor storage unit at 3503 B Street makes it easier to access and does not require the use of an elevator. However, the convenience of a first floor storage unit usually comes with a cost, and are typically more expensive.
What is elevator access or an upper floor storage unit?
An elevator access storage unit makes it a little more difficult to load and unload your storage unit and requires the use of an elevator or stair case. However, a upper floor storage unit typically will be less expensive.
What is a storage locker?
A storage locker has a reduced ceiling height between 4 to 6 feet. These storage units are good for storing small items; like suit cases, small household items, school and dormitory items, office supplies or holiday decorations. Storage lockers are usually less expensive than other units and could be the ground floor or accessed with a rolling ladder.
What is an onsite storage manager?
The manager of the storage facility actually lives in an apartment that is typically attached to the storage facility. The storage unit tenants get a feeling of security, knowing that a manager is nearby to address emergency matters or other matters that could occur after hours.
Does modSTORAGE (ex-21CSS), 3503 B Street offer extended hours?
Yes, modSTORAGE (ex-21CSS) at 3503 B Street offers extended hours. Usually storage facility office hours are 9:00 am to 6:00 pm. Extended hours could be from 6:00 am to 10:00 pm or even 24 hours a day, giving storage tenants more access to their storage unit.
What is keypad access?
A keypad entrance storage facility at 3503 B Street will control who enters and exits the facility. The tenant is provided a personal gate code and prevents non renters from entering the gated property.
What is the difference between a roll up door and a swing door?
A roll up door provides a larger opening and rolls into the ceiling of the storage unit. Where as a swing door, opens to the outside and swing door is more like a large residential house door. Larger units and newer construction will offer more roll up doors.
What items should you NOT put in a storage unit at 3503 B Street?
Most, if not all storage facilities prohibit the storing of food, live animals, explosive materials, weapons, ammunition, stolen merchandise, motorized vehicles that are not registered or insured.
Do self storage facilities in Philadelphia sell boxes and packing supplies?
Most storage facilities in Philadelphia offer locks, different box sizes, packing tape, bubble wrap, covers for furniture and numerous other packing supplies.
What are the most common unit sizes at 3503 B Street
The most common unit sizes at modSTORAGE (ex-21CSS) in 3503 B Street are 5x5 and 10x10. Most facilities also have other unit sizes available such as 5x`0, 10x20 and even 10x30 unit sizes.
Are the storage units at 3503 B Street secure?
All storage units at 3503 B Street are secure and protected at all times. modSTORAGE (ex-21CSS) in Philadelphia is backed by security features such as video surveillance, security access to your unit only and electronic gate access.
Facility Reviews
Customer service was very helpful on explaining the application process.they were very friendly explaining how to open and lock the storage unit. Took there time on answering all of my questions.
Nice and private and reasonable
Always let you know when theyテ「竄ャ邃「re not going to be open so thereテ「竄ャ邃「s no inconvenience to you!
Was treated with respect and in a friendly manner..
I went in and secured my storage space without any problems, customer service was on point, friendly, explained everything to a T, overall I'm satisfied with my experience so far!
The whole process was quick and easy. The staff at the site was very professional and full of knowledge.
Excellent service everyone provided wonderful service
Great customer service and support
Everything went ok with customer service.
I had a unit for 2 yrs. I have long term needs. I just got another 1. The sales lady was excellent in getting me the best deal!











