Extra Space Storage - 3905 - Federal Way - 21st Ave

33620 21st Avenue Southwest, Federal Way, WA 98023

Storage Units

*Prices are subject to change based on availability

5' x 5' Unit

  • Heated Only
  • 1st Floor
  • Interior

Web Only Special

$34.00 per month

$36

10' x 5' Unit

  • Heated Only
  • Upstairs via Elevator
  • Interior

Web Only Special

$45.00 per month

$47

5' x 10' Unit

  • Heated Only
  • Upstairs via Elevator
  • Interior

Web Only Special

$45.00 per month

$47

10' x 5' Unit

  • Heated Only
  • 1st Floor
  • Interior

Web Only Special

$47.00 per month

$50

5' x 10' Unit

  • Heated Only
  • 1st Floor
  • Interior

Web Only Special

$47.00 per month

$50

10' x 7' Unit

Flash Sale

  • Heated Only
  • Upstairs via Elevator
  • Interior

Web Only Special

$44.00 per month

$47

10' x 10' Unit

  • Heated Only
  • Upstairs via Elevator
  • Interior

Web Only Special

$83.00 per month

$87

10' x 10' Unit

  • Heated Only
  • 1st Floor
  • Interior

Web Only Special

$83.00 per month

$87

15' x 10' Unit

  • Heated Only
  • Upstairs via Elevator
  • Interior

Web Only Special

$90.00 per month

$95

10' x 15' Unit

  • Heated Only
  • Upstairs via Elevator
  • Interior

Web Only Special

$90.00 per month

$95

10' x 15' Unit

  • Heated Only
  • 1st Floor
  • Interior

Web Only Special

$97.00 per month

$102

10' x 15' Unit

Flash Sale

  • Heated Only
  • Drive Up Access

Web Only Special

$128.00 per month

$134

10' x 20' Unit

  • Heated Only
  • 1st Floor
  • Interior

Web Only Special

$158.00 per month

$167

10' x 20' Unit

  • Heated Only
  • Drive Up Access

Web Only Special

$261.00 per month

$275

Reviews

Reviews originally collected from the SpareFoot Marketplace.

4.5 out of 5 stars

14 Total Reviews

Review

by Michelle Schachere

July 2, 2025

5 out of 5 stars

Great service! Brian is very friendly. I was able to get into my unit with no issues.

Quick and Easy and great Customer Service

by Loren Ellingson

January 24, 2025

5 out of 5 stars

They have been great to work with and very helpful when I needed it. The paperwork literally took less than 10 minutes, and Shelby and Brian have been very helpful every time I need something and have to go into the office. The Units are clean and easily accessible, and a huge upgrade over the other storage units that I have used in the past. Would definitely recommend this facility!

Great job!

by Kristina

October 6, 2024

5 out of 5 stars

They were awesome and fast and very efficient

Very good rates and service

by Chuck

October 1, 2023

5 out of 5 stars

Very affordable storage units and great costumer service

Fast, friendly, clean

by Robin M Thompson

October 30, 2021

5 out of 5 stars

Communication was wonderful. From time of arrival to oprning the unit took less than 10 minutes. Very pleased with security, cleanliness, and integrity.

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