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    King County, WA Quadplexes for Sale

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    38 properties
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    Turnkey Quadplex with In-Unit Laundry
    Updated: Jun 11
    Turnkey Quadplex with In-Unit Laundry

    109 & 115 30th Ave, Seattle, WA 98122

    $2,700,000
    4,960 sqft 0.34 AC lot
    2 side‑by‑side fourplexes on individual parcels, with LR1 (M) zoning and a 14,711‑SF lot size
    2012 remodel with all‑new plumbing and electrical systems, plus updated kitchens, baths, and living spaces
    Unit mix: 4 one‑bed and 4 two‑bed units; all corner units with high ceilings and abundant natural light
    In‑unit laundry and dishwashers in each unit, with individual water meters and dedicated shutoffs
    Fire sprinklers throughout and secured entry for each residence, with front and back access
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    Renovated Four-Unit Quadplex
    Updated: Sep 5
    Renovated Four-Unit Quadplex

    1822 S King Street A-d, Seattle, WA 98144

    $1,395,000
    2,640 sqft
    Three one‑bedroom units and one two‑bedroom unit
    2,640‑square‑foot building constructed in 1988
    Full‑gut renovation completed in 2001; units renovated in 2019
    Private patio for every unit
    Four off‑street parking spaces
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    Fourplex with Alley Parking
    Fourplex with Alley Parking

    2021 15TH, Seattle, WA 98144

    $1,295,000
    4,230 sqft 0.12 AC lot

    Four-unit property with varied layouts, an updated kitchen, and gated backyard access.

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    Professionally Managed Quadplex Near Panther Lake
    Professionally Managed Quadplex Near Panther Lake

    34025 1st Pl S, Federal Way, WA 98003

    $799,000
    2,800 sqft

    Fully occupied one-bedroom units feature in-unit laundry, fireplaces, dishwashers, and private balcony or deck access.

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    Remodeled Four-Unit Quadplex
    Remodeled Four-Unit Quadplex

    4617 S 189th St, Seatac, WA 98188

    $1,799,948
    3,960 sqft

    Fully updated multifamily property with three-bedroom residences, private outdoor areas, and modern building systems.

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    Updated 4-Unit Apartment Property
    Updated 4-Unit Apartment Property

    3838 D Pl SE, Auburn, WA 98002

    $1,100,000
    3,840 sqft

    Four two-bedroom residences offer private outdoor space, fireplaces, and full-sized laundry appliances.

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    Four-Unit Apartment Building
    Four-Unit Apartment Building

    3842 D Pl SE, Auburn, WA 98002

    $950,000
    3,840 sqft

    Corner-lot property with private outdoor space, fireplaces, and full-size washer and dryer sets in every residence.

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    Four-Unit Multifamily Building
    Four-Unit Multifamily Building

    1745 12TH, Unit 1 - 4, Seattle, WA 98144

    $1,698,750
    4,589 sqft

    1900-built four-unit property with a solar-offset top unit and studio through 3-bedroom penthouse layouts.

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    Four-Unit Quadplex with Fireplaces
    Four-Unit Quadplex with Fireplaces

    34005 1 St Cir S, Federal Way, WA 98003

    $990,000
    3,904 sqft

    Each residence offers two bedrooms, one-and-a-half baths, laundry equipment, and a covered parking space.

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    Renovated Quadplex with Studio Unit
    Renovated Quadplex with Studio Unit

    6635 Carleton, Seattle, WA 98108

    $1,379,000
    2,910 sqft

    Renovated quadplex features one studio and three 1–2 bedroom units with updated kitchens and modern fixtures.

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    Renovated Fourplex with Covered Parking
    Renovated Fourplex with Covered Parking

    34246 1st Pl S, Federal Way, WA 98003

    $895,000
    3,000 sqft

    Four occupied one-bedroom homes each include a fireplace, in-unit laundry, and a private balcony or deck.

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    4-Unit Quadplex with Covered Parking
    4-Unit Quadplex with Covered Parking

    34246 1ST, Federal Way, WA 98003

    $895,000
    3,000 sqft

    Four occupied one-bedroom residences offer fireplaces, in-unit laundry, and private outdoor space.

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    Fully Occupied Four-Unit Quadplex
    Fully Occupied Four-Unit Quadplex

    34019 1st Circle S, Federal Way, WA 98003

    $799,000
    2,712 sqft

    Professionally managed multifamily property with a varied unit mix, private outdoor areas, and covered parking.

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    Turnkey Fourplex with 1-Bed Units
    Turnkey Fourplex with 1-Bed Units

    2258 14th Ave W, Seattle, WA 98119

    $975,000
    2,800 sqft

    Four turnkey one-bedroom units with hardwood floors, dishwashers, and off-street parking.

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    Remodeled 4-Unit Quadplex
    Remodeled 4-Unit Quadplex

    701 Kenyon Street, Seattle, WA 98108

    $975,000
    2,880 sqft

    Unit mix includes three two-bedroom apartments and one one-bedroom apartment, each with one full bath.

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    Four-Unit Quadplex
    Four-Unit Quadplex

    136 Mckean, Enumclaw, WA 98022

    $1,075,000
    4,092 sqft

    Each residence includes two bedrooms, one-and-a-half bathrooms, in-unit laundry, and a private outdoor area.

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    4-Unit Quadplex with Garages
    4-Unit Quadplex with Garages

    911 30th St NE, Auburn, WA 98002

    $1,249,000
    3,806 sqft

    Fully occupied four-unit property with individual garages, laundry, and on-site parking.

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    Fourplex with Private Balconies
    Fourplex with Private Balconies

    34214 1st Place S, Federal Way, WA 98003

    $899,950
    3,056 sqft

    Four independently served units each offer 2 bedrooms, 1 bathroom, and in-unit washer and dryer.

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    Four-Unit Multifamily Property
    Four-Unit Multifamily Property

    2657 Thorndyke, Seattle, WA 98199

    $1,150,000
    2,880 sqft

    Three units are leased, while one remains vacant for showing and leasing flexibility.

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    Four-Unit Quadplex with Views
    Four-Unit Quadplex with Views

    604 W Kinnear Pl, Seattle, WA 98119

    $4,200,000
    5,430 sqft

    Upgraded residences feature private balconies, gas fireplaces, premium appliances, and in-unit laundry.

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    4-Unit Shoreline Quadplex
    4-Unit Shoreline Quadplex

    19837 25TH, Shoreline, WA 98155

    $1,250,000
    3,500 sqft

    Residential income property with convenient access to Interstate 5 and regional employment, shopping, recreation, and transportation.

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    Updated Four-Unit Apartment Building
    Updated Four-Unit Apartment Building

    4811 S 252nd Pl, Kent, WA 98032

    $900,000
    2,980 sqft

    Recent upgrades include building systems, roofing, and interior finishes.

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    Updated Quadplex with New Roof
    Updated Quadplex with New Roof

    4809 S 252nd Pl, Kent, WA 98032

    $900,000
    2,760 sqft

    Four-unit income property with refreshed building systems and modernized interior finishes.

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    Four-Unit Quadplex with Laundry
    Four-Unit Quadplex with Laundry

    2250 I St NE, Auburn, WA 98002

    $900,000
    3,000 sqft

    Fully rented quadplex with assigned parking and a community coin-operated laundry room.

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    King County, WA Quadplexes Market Trends and Statistics

    Explore 38 quadplexes for sale in King County, WA, showcased through 38 active listings on our real estate platform. These investment opportunities span a total of 140,726 square feet of properties for sale, with an estimated market value of $46,831,596.

    Sale prices for four-unit buildings in King County, WA start at $799,000, averaging $1,300,877, and reaching up to $4,200,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

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