Mercer Island ApartmentsFavorite
$1,996–$4,140
Staying Home?
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Rent Special available! One Month Free Base Rent On Select Homes! Must move in by 9/30/2026. Minimum lease terms apply. Other costs and fees excluded.
sland Square offers renovated studio, one-, and two-bedroom apartment homes in the heart of Mercer Island. Updated interiors feature Swiss elm cabinetry, quartz countertops, stainless steel appliances, brushed nickel fixtures, and wood plank flooring. Spacious floor plans include modern appliances and large windows that create a bright, inviting atmosphere. Residents enjoy a 24-hour fitness center and a new clubhouse with coworking spaces, conference rooms, lounge seating, and a podcast room. With convenient access to Light Rail, shopping, dining, and outdoor recreation, Island Square connects you to the best of Mercer Island living.
Updated 8 Hours Ago
Apartment Amenities
Air Conditioning
Balcony
EV Charging
Fireplace
In-Unit Laundry
Building Amenities
Business Center
Elevator
EV Charging
Fitness Center
Garage Parking
Outdoor Space
Package Service
Residents Lounge
Other Amenities
Washer and Dryer
Patio
Online Rent Payment
On-Site Maintenance
Package Lockers
Sauna
Policies & Fees
Applicants
Application Fee
Per-applicant. Refund Policy: Non-refundable. Amount to process application, initiate screening, and take a rental home off the market.
$60
REQUIRED FEES
Administrative Fee
One-time. Refund Policy: Non-refundable. Amount to facilitate move-in process for a resident.
$400
Security Deposit (Refundable)
One-time. Refund Policy: Refundable. Amount intended to be held through residency that may be applied toward amounts owed at move-out. Refunds processed per application and lease terms.
$250–$350
Common Area - Electric
Monthly. Refund Policy: Non-refundable. Shared amount for common area electric usage.
Usage Based
Common Area - Gas
Monthly. Refund Policy: Non-refundable. Shared amount for common area gas usage.
Usage Based
Trash Services - Hauling
Monthly. Refund Policy: Non-refundable. Amount for shared trash/waste services.
$42
Utility - Billing Administrative Fee
Monthly. Refund Policy: Non-refundable. Amount to manage utility services billing.
$5.75
Utility - Electric - Third Party
Monthly. Refund Policy: Non-refundable. Amount for provision and consumption of electric paid to a third party.
Usage Based
Utility - Final Bill Fee
One-time. Refund Policy: Non-refundable. Amount billed to calculate final utility statement.
$17
Utility - Gas
Monthly. Refund Policy: Non-refundable. Amount for provision and consumption of natural gas.
Usage Based
Utility - New Account Fee
One-time. Refund Policy: Non-refundable. Amount to establish utility services.
$17
Utility - Sewer
Monthly. Refund Policy: Non-refundable. Amount for provision of sewer services.
Usage Based
Utility - Stormwater/drainage
Monthly. Refund Policy: Non-refundable. Amount for provision of storm water services.
Usage Based
Utility - Water
Monthly. Refund Policy: Non-refundable. Amount for provision and consumption of water.
Usage Based
Internet Services
Monthly. Refund Policy: Non-refundable. Amount for internet services provided by community.
$70
Package Services
Monthly. Refund Policy: Non-refundable. Amount for package services.
$15
Renters Liability Insurance - Third Party
Monthly. Refund Policy: Non-refundable. Amount for renters liability insurance obtained through resident's provider of choice.
Usage Based
OPTIONAL FEES
Parking Policy
Other
Amount for covered parking space/services. May be subject to availability.
Garage Lot
Amount for garage parking space/services. May be subject to availability.
Parking - Covered
Parking - Covered
Monthly. 2 parking - covereds max. Refund Policy: Non-refundable. Amount for covered parking space/services. May be subject to availability.
$105
Parking - Ev
Parking - Ev
Monthly. 2 parking - evs max. Refund Policy: Non-refundable. Amount for electric vehicle space; reserved or pay-per-use station. May be subject to availability.
$200
Parking - Garage
Parking - Garage
Monthly. 2 parking - garages max. Refund Policy: Non-refundable. Amount for garage parking space/services. May be subject to availability.
$175–$200
Dog Policy
Allowed
Cat Policy
Allowed
Pet
Pet Deposit (Refundable)
One-time. 2 pets max. Refund Policy: Refundable. Amount for pet living in rental home. May be assessed per pet or per rental home, based on lease requirements. Refunds processed per lease terms.
$250
Pet Fee
One-time. Refund Policy: Non-refundable. Amount to facilitate authorized pet move-in.
$500
Pet Rent
Refund Policy: Non-refundable. Monthly amount for authorized pet.
$75
SITUATIONAL FEES
Questions about this property’s policies and fees?
Building details
Property details
| Units | 235 |
|---|
Details
Price
$1,996–$4,140Available Floorplans
26 FloorplansAvailable
—Min. Lease
—Address
2758 78th Ave Se, Mercer Island, WA 98040Broker Fee?
—Cats/Dogs Allowed?
Dogs & Cats
Staying Home?
Call to request a live online tour
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Island Square 2758 78th Ave Se, Mercer Island, WA is a rental apartment building with 26 floorplans available. It is located in the Downtown Mercer Island neighborhood of Mercer Island. It has apartment amenities including air conditioning, ev charging, in-unit laundry, fireplace, and balcony. It has building amenities including ev charging, package service, business center, garage parking, elevator, outdoor space, residents lounge, and fitness center. Cats and dogs are allowed, making it a pet-friendly building.