KOI
1139 NW Market St 98107Seattle, WA
Starting from
$1,520–$3,125/mo
About KOI in Seattle
KOI is a boutique, pet-friendly apartment community at 1139 NW Market Street in Ballard, with furnished apartments available. Homes have high ceilings, granite counters, stainless steel appliances, vinyl plank floors with carpeted bedrooms, abundant natural light and washers and dryers, with walk-in closets in select homes. Residents have a lounge with a chef's kitchen, a fireplace and entertainment center, a 24/7 fitness studio, a courtyard garden with a firepit and BBQ area and a rooftop deck with covered grills, an outdoor TV and views. Package lockers, bike storage and EV charging are on-site.
KOI is a rental building at 1139 NW Market St in Ballard, Seattle, WA, built in 2012.
19 apartments are listed right now: 6 studios at $1,520–$1,725 a month, 10 one-bedrooms at $2,145–$2,475 a month, and 3 two-bedrooms at $2,899–$3,125 a month. Asking rents across the building run $1,520 to $3,125 per month. Pricing was last verified on October 27, 2026.
Residents have access to rooftop deck, package lockers, 24/7 fitness studio, bike storage, resident lounge, entertainment center, courtyard garden, covered bbq area, and 2 more amenities.
Floor plans at KOI
| Layout | Available | Size | Rent |
|---|---|---|---|
| Studio6 available | 6 | 453– | $1,520– |
| 1 Bedroom10 available | 10 | 705– | $2,145– |
| 2 Bedroom3 available | 3 | 908– | $2,899– |
Available units at KOI(19)
Sorted by rent, lowest first
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4Unit 403N{"name":"Studio B","provider_id":"5151579"}Studio · 1 ba · 453 sq ftAvailable now$1,520/mo- 4Unit 208N{"name":"Studio E","provider_id":"5151584"}Studio · 1 ba · 477 sq ftAvailable now$1,550/mo
- 4Unit 303S{"name":"Studio E","provider_id":"5151584"}Studio · 1 ba · 477 sq ftAvailable now$1,575/mo
- 4Unit 308N{"name":"Studio E","provider_id":"5151584"}Studio · 1 ba · 477 sq ftAvailable now$1,605/mo
- 4Unit 503N{"name":"Studio B","provider_id":"5151579"}Studio · 1 ba · 453 sq ftAvailable now$1,625/mo
- 4Unit 113S{"name":"Studio I","provider_id":"5151590"}Studio · 1 ba · 532 sq ftAvailable now$1,725/mo
- 4Unit 402S{"name":"1x1 Study 1","provider_id":"5151549"}1 bd · 1 ba · 734 sq ftAvailable now$2,145/mo
- 4Unit 507S{"name":"1x1 C","provider_id":"5151535"}1 bd · 1 ba · 705 sq ftAvailable now$2,150/mo
- 4Unit 208S{"name":"1x1 Study B","provider_id":"5151551"}1 bd · 1 ba · 784 sq ftAvailable now$2,199/mo
- 4Unit 406N{"name":"1x1 Den B","provider_id":"5151541"}1 bd · 1 ba · 746 sq ftAvailable now$2,295/mo
- 4Unit 507N{"name":"1x1 Study 1","provider_id":"5151549"}1 bd · 1 ba · 734 sq ftAvailable now$2,299/mo
- 4Unit 606N{"name":"1x1 Den B","provider_id":"5151541"}1 bd · 1 ba · 746 sq ftAvailable now$2,375/mo
- 4Unit 502S{"name":"1x1 Study 1","provider_id":"5151549"}1 bd · 1 ba · 734 sq ftAvailable now$2,395/mo
- 4Unit 407N{"name":"1x1 Study 1","provider_id":"5151549"}1 bd · 1 ba · 734 sq ftAvailable now$2,425/mo
- 4Unit 310S{"name":"1x1 Study B","provider_id":"5151551"}1 bd · 1 ba · 784 sq ftAvailable now$2,445/mo
- 4Unit 608S{"name":"1x1 Study B","provider_id":"5151551"}1 bd · 1 ba · 784 sq ftAvailable now$2,475/mo
- 4Unit 310N{"name":"2x2 B","provider_id":"5151565"}2 bd · 2 ba · 908 sq ftFrom Dec 11$2,899/mo
- 4Unit 214S{"name":"2x2 E","provider_id":"5151570"}2 bd · 2 ba · 1,041 sq ftAvailable now$3,099/mo
- 4Unit 409N{"name":"2x2 D","provider_id":"5151569"}2 bd · 2 ba · 924 sq ftAvailable now$3,125/mo
KOI Amenities
Rooftop Deck
Panoramic views, covered grills, and outdoor television
Package Lockers
24/7 Fitness Studio
Fitness center available 24/7
Bike Storage
Resident lounge
With chef’s kitchen
Entertainment Center
Courtyard Garden
Firepit and BBQ area
Covered BBQ Area
Controlled Access
Pet Friendly
Frequently asked questions about KOI
How much does it cost to rent at KOI?
Listed rents at KOI currently start at $1,520 per month and go up to $3,125. By layout: 6 studios from $1,520, 10 one-bedrooms from $2,145, 3 two-bedrooms from $2,899.
What floor plans are available at KOI?
KOI currently lists 6 studios (453 sq ft–532 sq ft), 10 one-bedrooms (705 sq ft–784 sq ft), and 3 two-bedrooms (908 sq ft–1,041 sq ft).
How do I schedule a tour at KOI?
Request a tour on Staycio at staycio.com/buildings/koi: pick a preferred date and time, and you'll get an email confirming the request.
Where is KOI located?
KOI is at 1139 NW Market St, Seattle, WA, in the Ballard neighborhood.