Extra Space Storage - 3642 - Alpharetta - Arnold Mill Rd

12390 Arnold Mill Road, Alpharetta, GA 30004

Storage Units

*Prices are subject to change based on availability

5' x 5' Unit

  • Climate Controlled
  • 1st Floor
  • Interior

Web Only Special

$20.00 per month

$23

5' x 10' Unit

  • Climate Controlled
  • 1st Floor
  • Interior

Web Only Special

$33.00 per month

$37

10' x 10' Unit

Flash Sale

  • Climate Controlled
  • 1st Floor
  • Interior

Web Only Special

$59.00 per month

$66

10' x 15' Unit

  • Climate Controlled
  • 1st Floor
  • Interior

Web Only Special

$86.00 per month

$96

10' x 20' Unit

  • Drive Up Access

Web Only Special

$113.00 per month

$126

10' x 20' Unit

  • Climate Controlled
  • 1st Floor
  • Interior

Web Only Special

$117.00 per month

$131

20' x 15' Unit

  • Climate Controlled
  • 1st Floor
  • Interior

Web Only Special

$192.00 per month

$214

30' x 10' Unit

  • Climate Controlled
  • 1st Floor
  • Interior

Web Only Special

$192.00 per month

$214

25' x 15' Unit

  • Climate Controlled
  • 1st Floor
  • Interior

Web Only Special

$247.00 per month

$275

Vehicle Storage

*Prices are subject to change based on availability

10' x 25' Parking Space

  • Drive Up Access
  • Vehicle
  • Outdoor-uncovered

Web Only Special

$86.00 per month

$96

10' x 40' Parking Space

  • Drive Up Access
  • Vehicle
  • Outdoor-uncovered

Web Only Special

$127.00 per month

$142

Reviews

Reviews originally collected from the SpareFoot Marketplace.

5 out of 5 stars

5 Total Reviews

Online functionality of the storage space is easy!

by Randolph K Axson III

December 8, 2025

5 out of 5 stars

the online folks who help set up the reservation are super knowledgeable and helpful

Great customer service

by Aleia

June 29, 2022

5 out of 5 stars

Great customer service

Clean, well managed storage facility

by Pat Barrett

April 9, 2022

5 out of 5 stars

Very clean, well managed storage facility. Even the setting is pleasant. I recently dropped in the office and Connor answered all my questions. I have used climate control units for both business and personal items over a long period of time.

Great customer service…

by Kim Ruple

December 2, 2021

5 out of 5 stars

Clean and smelled good in office

Yes but should have option to have insurance added

by April Conti

January 18, 2026

4.5 out of 5 stars

I currently have my unit insured and do not need to be charged monthly for insurance. Can this charge be removed? I can supply my insurance policy.

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