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modSTORAGE (ex-21CSS) - 3503 B ST - Philadelphia

3503 B Street, Philadelphia, PA 19134
Rating Badge
4.5
(130)
Rating Badge
4.5
(394)
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Online Move-In AvailableRent online, skip the counter, and go straight to your space
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10% Military discount
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10% Military discount (applies to active-duty, reserves, veterans only)
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10% Senior discount
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10% Senior discount
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10% Student discount
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10% Student discount

Available Storage Units (35)

5x5

$0.40 / sqft
Features
Roll Up DoorClimate ControlledInterior

Totally FREE Move In

$9.99
$14.99
Reserve Now, Pay LaterYou will not be charged until move-in

5x5

$0.80 / sqft
mini storage unit
Features
Roll Up DoorClimate ControlledInterior

Totally FREE Move In

$19.99
$34.99Only 2 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

5x5

$0.88 / sqft
mini storage unit
Features
Roll Up DoorClimate ControlledInterior

Totally FREE Move In

$21.99
$37.99Only 3 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

5x5

$1.00 / sqft
mini storage unit
Features
Roll Up DoorClimate ControlledPremium LocationInterior

Totally FREE Move In

$24.99
$39.99
Reserve Now, Pay LaterYou will not be charged until move-in

5x7.5

$0.80 / sqft
small storage unit
Features
Roll Up DoorClimate ControlledInterior

Totally FREE Move In

$29.99
$49.99Only 2 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

5x7.5

$0.93 / sqft
small storage unit
Features
Roll Up DoorClimate ControlledInterior

Totally FREE Move In

$34.99
$59.99
Reserve Now, Pay LaterYou will not be charged until move-in

5x10

$0.90 / sqft
small storage unit
Features
Roll Up DoorClimate ControlledInterior

Totally FREE Move In

$44.99
$79.99
Reserve Now, Pay LaterYou will not be charged until move-in

5x10

$1.00 / sqft
small storage unit
Features
Roll Up DoorClimate ControlledInterior

Totally FREE Move In

$49.99
$84.99
Reserve Now, Pay LaterYou will not be charged until move-in

5x10

$1.10 / sqft
small storage unit
Features
Roll Up DoorClimate ControlledPremium LocationInterior

Totally FREE Move In

$54.99
$94.99
Reserve Now, Pay LaterYou will not be charged until move-in

5x10

$1.60 / sqft
small storage unit
Features
Roll Up DoorDrive Up Access

Totally FREE Move In

$79.99
$139.99
Reserve Now, Pay LaterYou will not be charged until move-in

6x10

$1.25 / sqft
small storage unit
Features
Roll Up DoorClimate ControlledInterior

Totally FREE Move In

$74.99
$129.99Only 1 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

5x15

$0.51 / sqft
small storage unit
Features
Roll Up DoorInterior

Totally FREE Move In

$37.99
$64.99
Reserve Now, Pay LaterYou will not be charged until move-in

7.5x10

$0.53 / sqft
small storage unit
Features
Roll Up DoorInterior

Totally FREE Move In

$39.99
$69.99Only 1 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

5x15

$1.04 / sqft
small storage unit
Features
Roll Up DoorClimate ControlledInterior

Totally FREE Move In

$77.99
$137.99Only 1 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

7.5x10

$1.07 / sqft
small storage unit
Features
Roll Up DoorClimate ControlledInterior

Totally FREE Move In

$79.99
$139.99
Reserve Now, Pay LaterYou will not be charged until move-in

7.5x10

$1.09 / sqft
small storage unit
Features
Roll Up DoorClimate ControlledPremium LocationInterior

Totally FREE Move In

$81.99
$144.99Only 2 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

5x15

$1.09 / sqft
small storage unit
Features
Roll Up DoorClimate ControlledPremium LocationInterior

Totally FREE Move In

$81.99
$144.99Only 2 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

5x15

$1.27 / sqft
small storage unit
Features
Roll Up DoorDrive Up Access

Totally FREE Move In

$94.99
$169.99Only 3 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

7.5x12

$0.47 / sqft
medium storage unit
Features
Roll Up DoorInterior

Totally FREE Move In

$41.99
$74.99Only 1 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

10x10

$0.40 / sqft
medium storage unit
Features
Roll Up DoorInterior

Totally FREE Move In

$39.99
$84.99
Reserve Now, Pay LaterYou will not be charged until move-in

10x10

$0.75 / sqft
medium storage unit
Features
Roll Up DoorClimate ControlledInterior

Totally FREE Move In

$74.99
$159.99
Reserve Now, Pay LaterYou will not be charged until move-in

10x10

$0.85 / sqft
medium storage unit
Features
Roll Up DoorClimate ControlledPremium LocationInterior

Totally FREE Move In

$84.99
$169.99
Reserve Now, Pay LaterYou will not be charged until move-in

10x10

$0.85 / sqft
medium storage unit
Features
Roll Up DoorClimate ControlledInterior

Totally FREE Move In

$84.99
$149.99Only 3 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

10x15

$0.57 / sqft
medium storage unit
Features
Roll Up DoorInterior

Totally FREE Move In

$84.99
$149.99Only 1 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

10x15

$0.67 / sqft
medium storage unit
Features
Roll Up DoorClimate ControlledInterior

Totally FREE Move In

$99.99
$174.99Only 1 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

10x15

$0.73 / sqft
medium storage unit
Features
Roll Up DoorClimate ControlledInterior

Totally FREE Move In

$109.99
$184.99Only 1 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

10x15

$0.80 / sqft
medium storage unit
Features
Roll Up DoorClimate ControlledPremium LocationInterior

Totally FREE Move In

$119.99
$194.99Only 2 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

10x15

$1.33 / sqft
medium storage unit
Features
Roll Up DoorDrive Up Access

Totally FREE Move In

$199.99
$314.99
Reserve Now, Pay LaterYou will not be charged until move-in

10x18

$1.61 / sqft
medium storage unit
Features
Roll Up DoorDrive Up Access

Totally FREE Move In

$289.99
$404.99
Reserve Now, Pay LaterYou will not be charged until move-in

10x20

$1.50 / sqft
medium storage unit
Features
Roll Up DoorDrive Up Access

Totally FREE Move In

$299.99
$414.99Only 1 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

10x22

$1.39 / sqft
large storage unit
Features
Roll Up DoorDrive Up Access

Totally FREE Move In

$304.99
$424.99Only 2 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

15x15

$0.91 / sqft
large storage unit
Features
Roll Up DoorInterior

Totally FREE Move In

$204.99
$319.99Only 1 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

10x25

$0.86 / sqft
large storage unit
Features
Roll Up DoorInterior

Totally FREE Move In

$214.99
$326.99Only 1 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

10x27

$1.41 / sqft
large storage unit
Features
Roll Up DoorDrive Up Access

Totally FREE Move In

$379.99
$529.99Only 3 Left!
Reserve Now, Pay LaterYou will not be charged until move-in

10x30

$1.33 / sqft
large storage unit
Features
Roll Up DoorDrive Up Access

Totally FREE Move In

$399.99
$554.99
Reserve Now, Pay LaterYou will not be charged until move-in

Complete Amenities & Features

About modSTORAGE (ex-21CSS) - 3503 B ST - Philadelphia

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."

ACCESS

  • Electronic gate accessElectronic gate access
  • Handcarts or dolliesHandcarts or dollies

SECURITY

  • Video cameras onsiteVideo cameras onsite
  • Fenced + LightedFenced + Lighted
  • On site office at facilityOn site office at facility

OFFICE HOURS
Sunday9:00 AM – 4:00 PM
Monday9:00 AM – 6:00 PM
Tuesday9:00 AM – 6:00 PM
Wednesday9:00 AM – 6:00 PM
Thursday9:00 AM – 6:00 PM
Friday9:00 AM – 6:00 PM
Saturday9:00 AM – 5:00 PM
ACCESS HOURS
Sunday6:00 AM – 4:00 PM
Monday6:00 AM – 6:00 PM
Tuesday6:00 AM – 6:00 PM
Wednesday6:00 AM – 6:00 PM
Thursday6:00 AM – 6:00 PM
Friday6:00 AM – 6:00 PM
Saturday6:00 AM – 5:00 PM

VEHICLE STORAGE REQUIREMENTS

  • Requires titleRequires title
  • Requires registrationRequires registration
  • Requires insuranceRequires insurance
  • Must be drivableMust be drivable

PROPERTY COVERAGE

  • Insurance requiredInsurance required
  • Insurance available for purchaseInsurance available for purchase
  • Protection plan requiredProtection plan required
  • Protection Plan available for purchaseProtection Plan available for purchase
  • Homeowners or renters insurance acceptedHomeowners or renters insurance accepted

PAYMENTS

  • CashCash
  • Credit cards accepted: Visa, Mastercard, AMEX, DiscoverCredit cards accepted: Visa, Mastercard, AMEX, Discover
  • CheckCheck

BILLING

  • Email invoicing availableEmail invoicing available
  • Automatic payments availableAutomatic payments available
  • Rent due on same day each month per lease startRent due on same day each month per lease start

MISCELLANEOUS

  • Bilingual managerBilingual manager
  • Mail or packages acceptedMail or packages accepted
  • Moving supplies for saleMoving supplies for sale
  • Paperwork can be done remotelyPaperwork can be done remotely

  • Truck rentalTruck rental

Customer Reviews

4.5(130)
Verified (130)Google (394)

Since Iテ「竄ャ邃「ve been renting here I never had a prblm.

by Rasheem N.

February 20, 2024

5.0

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!

Overall a great experience!

by Natasha Brooks

June 3, 2023

5.0

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!

Great people

by Jacqueline Domenech

December 19, 2022

5.0

Great customer service and support

Everything went OK with customer service.

by Benjamin Bellmon

October 17, 2022

5.0

Everything went ok with customer service.

The sales people are wonderfully helpful and the units are clean

by J. Brown

August 29, 2022

5.0

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!

Mohamed M's profileMohamed M
February 4, 2026

PROPERTY DAMAGE & DISGUSTING LIQUID ALL OVER MY STUFF. PLEASE SEE ATTACHED PICTURES OF DAMAGED BELONGINGS. DO NOT USE MODSTORAGE. ALSO TERRIBLE CUSTOMER SERVICE. Within just 2 months of storing my belongings here, my mattress and clothing were soaked in a FOUL SMELLING LIQUID. It has been 30 DAYS since requesting reimbursement for the damaged items, and every email and follow-up has been completely ignored. This has caused hardship and inconvenience as the entire reason I rented a storage unit was because I would not be in the area. Now I have to go through extreme inconvenience to get there again just because of this this damage. The employee that was on-site the day I discovered the the damage would not commit to any solution or take responsibility and and only told me to send an email, which the email has led nowhere. SEE ATTACHED PICTURES OF DAMAGED BELONGINGS

Kurtis James's profileKurtis James
January 23, 2026

Jim and Fern at MyStorage provided excellent customer service during my U-Haul truck rental on January 14th. They were professional, friendly, and made the process smooth and stress-free. I truly appreciated their help and would highly recommend this location because of them.

Hameed Douglas's profileHameed Douglas
March 18, 2026

I had a great experience, Fernando on B street was super knowledgeable and accommodating the entire time.

Joseph Hinton's profileJoseph Hinton
April 28, 2026

Awesome Service, Fernando made the whole experience seem less

John Iriz's profileJohn Iriz
November 2, 2025

Great experience the guy help us a lot everything went smoothly

How to Rent a Storage Unit With Storage.com

There are two easy ways to secure a unit at this storage facility

1You can complete your rental process online today and go straight to your unit when you plan to move in.
2You can make a reservation today with no payment until you sign your lease at your move-in date.
How It Works
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