Skip Nav

WRITE A REVIEW

★★★ Current Special ★★★

25% Off Your 2nd Months' Rent

VIEW RATES

**On select sizes.

  • On-Site
    Manager

  • Gated Facility with
    Keypad Access

  • Many Storage
    Spaces & Sizes

  • Easy US-2
    Access

  • RV & Boat
    Parking

  • Video
    Cameras

  • Boxes and Moving
    Supplies

  • Extended
    Access Hours

SMALL

Starting At
$100
SEE UNITS

MEDIUM

Starting At
$240
SEE UNITS

LARGE

Starting At
$255
SEE UNITS

ABOUT US

At Mountainside Storage we have a solution for reorganizing your life, without having to part with the things you want to keep forever. Our affordable self-storage facility in Sultan, WA offers customers like you simple and convenient storage options you will feel great about.

Unlike other self storage facilities, at Mountainside Storage you'll have the peace of mind of being able to access your items at any time. Whether you're looking to store a few small items or an entire household, Mountainside Storage offers many different storage units to choose from, and our flexible lease agreement gives you the freedom to only stay as long as you want to.

WHAT OUR CUSTOMERS SAY ABOUT US

Cee Hernandez 9 Months Ago

I love the fact that everything is done online. It was a great first time experience. The process was seamless. Which shocks me because in most of my...

I love the fact that everything is done online. It was a great first time experience. The process was seamless. Which shocks me because in most of my experiences with businesses that have tried to become fully online or contactless.... there is always a hiccup or some sort of bug. Mountainside Storage process is perfect. Anthony helped me in the office, he is kind and informative. Thank you

Miles Kendrick 10 Months Ago

Anthony was incredibly helpful and assisted me with all my needs for my unit. Looking forward to continuing my business with mountainside storage!

Jonathan C. 11 Months Ago

Jory Huebel

Friendly staff

Amanda Bedard

Sarah Stokley

We rented a unit from them for 3 years and it was great the staff is friendly and helpful and the property is nice and clean and secure. We just retur...

We rented a unit from them for 3 years and it was great the staff is friendly and helpful and the property is nice and clean and secure. We just returned to gold bar and rented a large unit and have had the same experience the second time around. Would recommend! Compared to prices everywhere I would say they are very fair.

Megan D.

We are moving and need storage in this area of town. I called and spoke with Anthony regarding renting a unit, he was able to go over all of the sizes...

We are moving and need storage in this area of town. I called and spoke with Anthony regarding renting a unit, he was able to go over all of the sizes and...

Bry This

Lexi helped me out with a Uhaul and storage in an emergency. Very friendly and knows the business well.

Cody Firestone

Storage is good for storing your extra stuff.

Frank Paus

Excellent

Claudia Calvert

Clifford Totten

Staff embodied strong customer service. Very friendly and I would highly recommend them.

Arianna troka

Becca Walters

I just went through the process of signing up for a unit with Mountainside and they were amazing, very helpful and extremely friendly. I got lost on ...

I just went through the process of signing up for a unit with Mountainside and they were amazing, very helpful and extremely friendly. I got lost on my way there and was going to show up a little after they closed, and the lady stayed open waiting for me. Thank you for making the experience so easy.

Lucy H

Good people, clean & well-kept.

Kyla Renick

Jeremy L.

Great customer service.

Tenisha Gienger

First ever looking here. I was very happy with the service. Quick professional advice. Great walk through the units to find the perfect fit. I will sh...

First ever looking here. I was very happy with the service. Quick professional advice. Great walk through the units to find the perfect fit. I will share my experience.

Kasie Moody

Friendly caring staff, the property is always in nice condition! I absolutely like that the property is gated and I like the monthly insurance fee giv...

Friendly caring staff, the property is always in nice condition! I absolutely like that the property is gated and I like the monthly insurance fee gives me peace of mind that my items are safe...

David Potter

Carrie Brave

Rebecca Jimenez

Love the staff!

erica Johnson

Nice

Amber Hazel

Most amazing facility! The managers are so helpful and knowledgeable! I am always greeted with a smile and a cup of coffee whenever I stop in to the o...

Most amazing facility! The managers are so helpful and knowledgeable! I am always greeted with a smile and a cup of coffee whenever I stop in to the office! I would always recommend this facility!

Anthony Vega

Super friendly and cautious staff!

Kim Jimenez

The office personnel are professional and knowledgable. The until are well maintained. I highly recommend this place for your storage needs

Cameron Boman

Keith Wiggins

Anthony Manzanares

Paul Anderle

Friendly staff and well kept up.

Rhonda Perecz

Lexi is wonderful.She is very helpful and always answer any questions I have.I thank you for being a good friendly facility.I would recommend you to ...

Lexi is wonderful.She is very helpful and always answer any questions I have.I thank you for being a good friendly facility.I would recommend you to anyone that needs a safe secure storage for their belongings.

Lexie Manzanares

Bruce Anderson

ThomasLena Jay

Super sweet attendants!

42 Total Reviews
  • FAQs
  • STORAGE TIPS
  • CONTACT

HAVE QUESTIONS?

View our FAQs page for answers to all our frequently asked questions.

FAQs

NEW TO STORAGE?

View our Storage Tips page for ways to get the most out of your unit.

STORAGE TIPS

CONTACT US!

Want more information? Visit our contact page to send us a message.

CONTACT

WHERE WE’RE LOCATED

FACILITY ADDRESS:

33329 US-2
Sultan, WA 98294

PHONE NUMBER:

(360) 799-3801

OFFICE HOURS:

Mon - Sun: 9am - 5pm

GATE HOURS:

Daily: 7am – 10pm

This is an image showing the location of the facility on Google Maps. Use the following link to be taken to Google Maps for directions.