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Island Square

$1,702 – $4,037/mo

2758 78th Ave Se, Mercer Island, WA, 98040

What floor plans are available at Island Square?

Island Square currently lists 16 floor plans across 21 available units, starting at $1,702/mo. Prices checked October 2, 2026.

E1J3

Starting at $1,702

581 Sq Ft

1 available unitPriceSq ftAvailableOpen unit
C-307$1,702581Oct 18

E1E

Starting at $1,944

549 Sq Ft

2 available unitsPriceSq ftAvailableOpen unit
D-306$1,944549Aug 18
D-403$2,058549Sep 8

E1DP

Starting at $2,187

547 Sq Ft

1 available unitPriceSq ftAvailableOpen unit
E-301$2,187547Aug 24

E1P2

Starting at $2,192

661 Sq Ft

1 available unitPriceSq ftAvailableOpen unit
A-511$2,192661Aug 24

E1I

Starting at $2,278

575 Sq Ft

1 available unitPriceSq ftAvailableOpen unit
D-305$2,278575Sep 15

E1O

Starting at $2,354

642 Sq Ft

1 available unitPriceSq ftAvailableOpen unit
C-504$2,354642Sep 8

A1B

Starting at $2,383

637 Sq Ft

2 available unitsPriceSq ftAvailableOpen unit
C-204$2,383637Aug 18
C-304$2,468637Oct 5

A1HD

Starting at $2,554

741 Sq Ft

1 available unitPriceSq ftAvailableOpen unit
D-313$2,554741Sep 15

A1OD2

Starting at $2,670

810 Sq Ft

1 available unitPriceSq ftAvailableOpen unit
B-206$2,670810Sep 22

A1SD3

Starting at $2,832

889 Sq Ft

1 available unitPriceSq ftAvailableOpen unit
D-508$2,832889Sep 29

A1ND3

Starting at $2,832

809 Sq Ft

1 available unitPriceSq ftAvailableOpen unit
B-304$2,832809Oct 1

A1OD

Starting at $2,919

810 Sq Ft

2 available unitsPriceSq ftAvailableOpen unit
C-208$2,919810Oct 4
A-210$2,965810Nov 7

B2DD

Starting at $3,778

1,071 Sq Ft

2 available unitsPriceSq ftAvailableOpen unit
B-305$3,7781,071Aug 24
B-405$3,8481,071Oct 3

B2DD2

Starting at $3,791

1,071 Sq Ft

2 available unitsPriceSq ftAvailableOpen unit
B-505$3,7911,071Oct 9
B-205$3,7931,071Oct 20

Plan B2RD

Starting at $3,979

1,277 Sq Ft

1 available unitPriceSq ftAvailableOpen unit
C-412$3,9791,277Oct 2

B2HD

Starting at $4,037

1,157 Sq Ft

1 available unitPriceSq ftAvailableOpen unit
C-209$4,0371,157Oct 26

What are the fees and lease terms at Island Square?

Rent at Island Square is $1,702 – $4,037 per month. The security deposit is $250. Monthly fees include Appliance-Related Charge, Internet Services, and Intra-Community Transfer Fee. Due at signing: Administrative Fee ($400), Application Fee ($60), and Holding Deposit (Refundable) ($250). The earliest listed move-in is Aug 18. Prices checked October 2, 2026.

  • Rent

    $1,702 – $4,037/mo
  • Security deposit

    $250
  • Earliest move-in

    Aug 18

Monthly fees

Appliance-Related Charge

$55/mo

Internet Services

$70/mo

Intra-Community Transfer Fee

$500/mo

Package Services

$15/mo

Parking - Covered

$105/mo

Parking - EV

$200/mo

Parking - Garage

$175/mo

Pet Fee

$500/mo

Pet Rent

$75/mo

Positive Credit Reporting Services

$4.95/mo

Renters Liability/Content - Property Program

$14.5/mo

Renters Liability Only - Non-Compliance

$10.75/mo

Storage Space Rental

$55/mo

Trash Services - Hauling

$42/mo

Utility - Billing Administrative Fee

$5.75/mo

Due at signing

Administrative Fee

$400

Application Fee

$60

Holding Deposit (Refundable)

$250

Pet Deposit (Refundable)

$250

Satellite Dish Deposit (Refundable)

$100

Security Deposit (Refundable)

$250

Utility - Vacant Processing Fee

$50

What amenities does Island Square have?

Island Square lists 6 amenities, including a gym, pet-friendly spaces, and in-unit laundry.

  • Fitness Center

  • Information Coming Soon!

  • Patio/Balcony

  • Pet Friendly

  • Smoke Free

  • Washer/Dryer


Where is Island Square?

Island Square is at 2758 78th Ave Se, Mercer Island, WA, 98040.

2758 78th Ave Se, Mercer Island, WA, 98040


Residents give Island Square a D+ grade (about 3.4 out of 5) from 200+ reviews. Island Square offers a prime Mercer Island location with walkable access to shops, restaurants, and transit, plus well-maintained renovated units and strong on-site management. Most residents praise the responsive staff and community atmosphere, though some experience disruptions from ongoing construction, occasional elevator maintenance issues, and noise from street-facing units or neighboring residents.

3.40 · 200+ reviews
Overall rating
Positive
Mixed
Neutral
Negative
Management4.4
Location4.6
Amenities and Shared Spaces4.0
Building Quality2.8
Maintenance4.4

Island Square offers a prime Mercer Island location with walkable access to shops, restaurants, and transit, plus well-maintained renovated units and strong on-site management. Most residents praise the responsive staff and community atmosphere, though some experience disruptions from ongoing construction, occasional elevator maintenance issues, and noise from street-facing units or neighboring residents. Fees and billing practices have been a concern for a small number of residents.

Management and office staff are consistently praised for being responsive, friendly, and professional, with many residents highlighting their helpfulness and approachability. However, some residents experienced issues during the leasing and move-in process, including miscommunications about amenities and unfulfilled promises, as well as concerns about billing communication and late fee policies. The property management team is generally well-regarded for their day-to-day service, though process improvements in the leasing phase and communication transparency could enhance the resident experience.

Island Square offers a highly walkable location on Mercer Island with convenient access to grocery stores, restaurants, and parks within walking distance, plus quick freeway access to Seattle and Bellevue for commuters. Street parking is available nearby, though some residents note limited reasonably priced parking options. The property's location is consistently praised as a major strength, though residents should be aware of ongoing construction projects and occasional maintenance disruptions.

Island Square offers well-maintained amenities including a modern gym with sauna, clean common spaces, and a convenient central location near grocery stores and transit. However, residents report ongoing challenges with elevator maintenance, package delivery accuracy, parking garage congestion, and extended construction projects that were not pre-disclosed. Amenity completion timelines—particularly the hot tub—have extended beyond resident expectations.

Residents report significant noise issues stemming from hardwood floor installations, ongoing construction projects, and inadequate sound insulation between units. Elevator reliability is a major concern, with multiple extended outages and at least one incident requiring fire department rescue. Building cleanliness and maintenance responsiveness vary; while some residents praise upkeep and renovations, others note dirty stairwells, hallway litter, and delayed repairs. Management communication about planned construction and service disruptions has been inconsistent.

Maintenance staff are consistently praised for responsiveness and punctuality in addressing repair requests. Most residents report positive experiences with work order completion, though some note ongoing issues with amenity maintenance (hot tub renovation) and occasional water service interruptions. Elevator breakdowns have been reported as a recurring concern.


Is Island Square walkable?

Island Square is very walkable, transit is minimal, and biking is bikeable.

WALK

Very Walkable

TRANSIT

Minimal Transit

BIKE

Bikeable


How big is Island Square?

Island Square is a 235-unit apartment.

  • Building

    Apartment
  • Total units

    235

What schools are near Island Square?

Early World Montessori is 0.2 miles from Island Square. 10 schools are listed nearby.

SchoolTypeLevelDistance

Early World Montessori

Private · Elementary
PrivateElementary0.2 mi

Early World Montessori

Private · Elementary
PrivateElementary0.2 mi

American Academy

Private · High
PrivateHigh0.3 mi

Creative Learning Center

Private · Preschool
PrivatePreschool0.3 mi

Mercerview Community Center

Private · Preschool
PrivatePreschool0.4 mi

Pebble Pre-School

Private · Preschool
PrivatePreschool0.6 mi

Northwest Montessori School

Private · Elementary
PrivateElementary0.9 mi

Little Acorn Day School

Private · Elementary
PrivateElementary1.0 mi

Country Village Day School

Private · Elementary
PrivateElementary1.0 mi

West Mercer Elementary School

Public · Elementary
PublicElementary1.0 mi

How do I contact Island Square?

Island Square is managed by Greystar. Call (206) 644-5464 to tour or ask about availability.