20 listings with more than 356 climate-controlled storage units in and around Mercer Island, WA
Not sure what size you need? See our size guide!
Not sure what size you need? See our size guide!
Storage Court - 8501 SE 68th Street, Mercer Island, WA 98040
- Climate-Controlled
- Indoor
- 24 hour access
$111Small 5x5$293Medium 10x19$296Large 10x22
Newcastle Heated Storage - 7115 132nd Place SE, Newcastle, WA 98059
- Climate-Controlled
- Indoor
- Drive-Up Access
$66Small 5x5$199Medium 10x13$357Large 10x20![Storage Units for Rent available at 3736 Rainier Avenue South, Seattle, WA 98144]()
West Coast Self - Storage - 3736 Rainier Avenue South, Seattle, WA 98144
- Climate-Controlled
- Indoor
- Retail Available
$49Small 5x5$164Medium 10x10$379Large 10x20![Storage Units for Rent available at 1200 South Dearborn Street, Seattle, WA 98144]()
Public Storage - 1200 South Dearborn Street, Seattle, WA 98144
- Climate-Controlled
- Indoor
- Retail Available
$32Small 5x4$166Medium 10x10$389Large 10x20![Storage Units for Rent available at 1755 NE 48th Street, Renton, WA 98056]()
Public Storage - 1755 NE 48th Street, Renton, WA 98056
- Climate-Controlled
- Indoor
- Drive-Up Access
$50Small 5x5$184Medium 10x10$438Large 10x20![Storage Units for Rent available at 1111 118th Avenue SE, Bellevue, WA 98005]()
Public Storage - 1111 118th Avenue SE, Bellevue, WA 98005
- Climate-Controlled
- Indoor
- Retail Available
$49Small 5x5$155Medium 10x10$309Large 10x20![Storage Units for Rent available at 10020 Martin Luther King Jr. Way South, Seattle, WA 98178]()
Public Storage - 10020 Martin Luther King Jr. Way South, Seattle, WA 98178
- Climate-Controlled
- Indoor
- Drive-Up Access
$56Small 5x5$104Medium 10x10$180Large 10x20![Storage Units for Rent available at 4041 124th Avenue SE, Bellevue, WA 98006]()
Public Storage - 4041 124th Avenue SE, Bellevue, WA 98006
- Climate-Controlled
- Indoor
- Drive-Up Access
$52Small 5x5$148Medium 10x10$206Large 10x20![Storage Units for Rent available at 6305 Corgiat Drive South, Seattle, WA 98108]()
SecureSpace Self Storage - 6305 Corgiat Drive South, Seattle, WA 98108
- Climate-Controlled
- Indoor
- Retail Available
$45Small 5x5$84Medium 10x10$142Large 10x20![Storage Units for Rent available at 12385 Northup Way, Bellevue, WA 98005]()
Public Storage - 12385 Northup Way, Bellevue, WA 98005
- Climate-Controlled
- Indoor
- Drive-Up Access
$56Small 5x5$147Medium 10x10$182Large 10x20![Storage Units for Rent available at 2400 1st Avenue South, Seattle, WA 98134]()
CubeSmart Self Storage - 2400 1st Avenue South, Seattle, WA 98134
- Climate-Controlled
- Indoor
- Drive-Up Access
$62Small 5x6$115Medium 10x10$235Large 20x10![Storage Units for Rent available at 1800 124th Avenue NE, Bellevue, WA 98005]()
Public Storage - 1800 124th Avenue NE, Bellevue, WA 98005
- Climate-Controlled
- Indoor
- Drive-Up Access
$50Small 5x5$115Medium 7.5x15$222Large 10x25![Storage Units for Rent available at 1800 Terry Avenue, Seattle, WA 98101]()
Seattle Vault Self Storage - 1800 Terry Avenue, Seattle, WA 98101
- Climate-Controlled
- Indoor
- Drive-Up Access
$65Small 5x5$135Medium 10x10$335Large 10x20![Storage Units for Rent available at 14300 Interurban Avenue South, Tukwila, WA 98168]()
Public Storage - 14300 Interurban Avenue South, Tukwila, WA 98168
- Climate-Controlled
- Indoor
- Drive-Up Access
$54Small 5x5$125Medium 10x10$212Large 10x20![Storage Units for Rent available at 12465 Northup Way, Bellevue, WA 98005]()
Public Storage - 12465 Northup Way, Bellevue, WA 98005
- Climate-Controlled
- Indoor
- Drive-Up Access
$54Small 5x10$158Medium 10x10$407Large 10x20![Storage Units for Rent available at 12399 Northup Way, Bellevue, WA 98005]()
West Coast Self - Storage - 12399 Northup Way, Bellevue, WA 98005
- Climate-Controlled
- Indoor
- Drive-Up Access
$44Small 5x5$159Medium 10x10$389Large 10x20![Storage Units for Rent available at 1815 12th Avenue, Seattle, WA 98122]()
Public Storage - 1815 12th Avenue, Seattle, WA 98122
- Climate-Controlled
- Indoor
- Drive-Up Access
$48Small 5x5$244Medium 10x10![Storage Units for Rent available at 2400 South 1st Avenue, Seattle, WA 98134]()
CubeSmart Self Storage - 2400 South 1st Avenue, Seattle, WA 98134
- Climate-Controlled
- Indoor
- Retail Available
$456Large 10x20![Storage Units for Rent available at 11836 Des Moines Memorial Drive, Seattle, WA 98168]()
10 Federal Storage - 11836 Des Moines Memorial Drive, Seattle, WA 98168
- Climate-Controlled
- Indoor
- Drive-Up Access
![Storage Units for Rent available at 1334 Alaskan Way, Seattle, WA 98101]()
Public Storage - 1334 Alaskan Way, Seattle, WA 98101
- Climate-Controlled
- Indoor
- Drive-Up Access
$48Small 3x3$168Medium 7.5x15$311Large 10x20
Trending storage types in Mercer Island:
Check out climate-controlled storage units in nearby cities:
- Newcastle, WA 4 mi away from $66/mo
- Tukwila, WA 7 mi away from $26/mo
- Burien, WA 8 mi away from $54/mo
- SeaTac, WA 9 mi away from $29/mo
- Issaquah, WA 12 mi away from $99/mo
- Shoreline, WA 15 mi away from $38/mo
- Covington, WA 15 mi away from $32/mo
- Woodinville, WA 15 mi away from $39/mo
- Bainbridge Island, WA 16 mi away from $110/mo
- Maple Valley, WA 17 mi away from $74/mo
- Bothell, WA 17 mi away from $50/mo
- Lynnwood, WA 19 mi away from $56/mo
- Edmonds, WA 19 mi away from $64/mo
- Mill Creek, WA 21 mi away from $55/mo
- Snoqualmie, WA 21 mi away from $75/mo
- Milton, WA 22 mi away from $55/mo
Need more options? Browse storage units in other Washington cities!
- Seattle, WA from $26/mo
- Spokane, WA from $42/mo
- Tacoma, WA from $37/mo
- Vancouver, WA from $39/mo
- Bellevue, WA from $49/mo
- Kent, WA from $32/mo
- Everett, WA from $6/mo
- Spokane Valley, WA from $25/mo
- Renton, WA from $60/mo
- Federal Way, WA from $24/mo
- Yakima, WA from $85/mo
- Kirkland, WA from $68/mo
- Auburn, WA from $29/mo
- Kennewick, WA from $85/mo
- Pasco, WA from $69/mo
- Redmond, WA from $40/mo
- Marysville, WA from $180/mo
- South Hill, WA from $29/mo
- Sammamish, WA from $58/mo
- Lakewood, WA from $96/mo
Average storage prices in Mercer Island (updated April 2026)
With prices starting at $111, you’ll find everything from compact locker-sized units to large spaces for cars, RVs or household goods. The average monthly rate for a storage unit in Mercer Island is $376.
Prices typically vary depending on the unit size and whether it’s climate controlled.
| Unit Size | Non-Climate-Controlled Units | Climate-Controlled Units |
|---|---|---|
| 5x5 | - | $111 |
| 5x10 | - | $215 |
| 10x10 | - | $322 |
| 10x15 | - | $433 |
| 10x20 | $502 | $502 |
| 10x30 | $460 | $460 |
| Average (all sizes) | $481 | $340 |
Note: Street rate data provided by Yardi Matrix.
Check out climate-controlled storage prices in Mercer Island, WA
Finding the right climate-controlled storage in Mercer Island, WA is crucial for protecting your valuable items. Renting a climate-controlled storage unit in Mercer Island hovers around $340 on average, but prices can vary significantly depending on unit size.
The monthly rate for a small, 5X5 climate-controlled unit starts at $111.
A large, 10x30 climate-controlled unit, on the other hand, can cost around $460.
There is one facility in Mercer Island, WA offering climate-controlled storage options, ensuring you can find a unit that meets your needs.
Why you should use climate-controlled self storage?
Climate-controlled storage units maintain a consistent temperature throughout the year, regardless of the outside weather. This type of storage will protect your belongings from the damaging effects of extreme heat and cold.
Climate-controlled storage also manages humidity levels, preventing moisture-related damage like mold and mildew.
Whether you’re storing electronics, antiques, documents, or artwork, climate-controlled units offer the best environment to keep these sensitive items safe.
Looking for more options? Browse climate-controlled storage units in nearby cities to find the perfect solution for your storage needs.
Frequently asked questions
How safe is self storage?
Most self storage facilities have some level of security, often including surveillance cameras and gated access. Popular security features include video surveillance and secure entry systems. Know that the facility comes with a strong security setup can give you confidence that your belongings are safe until you need them again.
What is climate-controlled storage?
Climate-controlled storage refers to a type of storage where temperature and humidity. The primary goal of climate control is to protect your belongings from environmental damage. Items that are sensitive or fragile, like furniture, appliances or antiques, aren't built to endure fluctuations in temperature and humidity. Without climate control, a standard self storage unit can expose these types of possessions to common damage like mold, mildew, rust, and corrosion.
What items cannot be put in storage?
Generally, avoid storing plants, food, live animals, hazardous and wet items among other. However, ask the facility you plan on renting from to find out the specific list of items that can't be put in storage.
Can I go to my storage unit anytime?
Access to your unit can vary depending on the facility. Some self storage locations offer 24/7 access, while others limit entry to specific operating hours that can vary. It's also a good idea to ask what their access schedule prior renting a unit to see if it matches your needs.
Methodology Note: Self storage data - including pricing and unit information - is analyzed and curated by RentCafe Self Storage. Statements reflect local market coverage and storage availability trends within the area.
Data sources: RentCafe Self Storage Research, Yardi Matrix, U.S. Census.