King County Duplex, Triplex 4-plex Apartments

King County WA Multi-Family Properties for Sale

Our website features the best real estate search for duplexes, triplex, 4-plex and commercial apartment building investment multi-family listings available in King County and surrounding areas. It is the only site you will ever need! It is easy-to-use and updated by the official REALTOR®’s database every 15 minutes. 

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Newest King County Multi-Family Homes for Sale

$949,998
2574331 MLS ACTIVE Status
Prime Auburn location with a cap rate over 7%, strong existing rents, and reliable long-term tenants with an opportunity to occupy one of the units and have established rents in the other 3. This well-maintained fourplex offers immediate cash flow with additional upside over time. The building has also recently been repainted on the exterior, enhancing its curb appeal and reducing near-term maintenance for the next owner.Each of the four homes features two bedrooms, one bathroom, in-unit laundry, updated appliances, a fireplace, and a comfortable, functional layout. Both upper residences have been remodeled with attractive modern finishes and include private decks. The two lower residences offer private patios and fenced outdoor areas, providing added privacy and strong tenant appeal.The property also includes four covered carport spaces and two additional surface parking spaces. Conveniently located near major freeways, shopping, restaurants, parks, transit, and everyday services, the property provides easy access throughout the South Sound and greater Seattle area while remaining tucked away from the main road.All four units are currently occupied by established tenants, providing dependable income from day one. With strong rents already in place, two remodeled upper units, a freshly painted exterior, and a cap rate close to 7%, this is a compelling opportunity for investors seeking durable cash flow in a high-demand rental market.

2826 D Place SE, Auburn

Listing courtesy of COMPASS.

$1,690,000
2572857 MLS ACTIVE Status
Capitalize on Kirkland’s rapid growth with this beautifully remodeled, low-maintenance 4-unit property. Offering scenic territorial southwest views with abundant light, the building features extensive capital improvements—including a newer roof and energy-efficient double-paned windows, sliding glass doors & water heaters. Walk to Kirkland’s beaches, farmer markets, and amenities. Each unit is fully rented with established, long-term tenants and boasts high-end finishes: granite countertops, stainless steel appliances, individual in-unit washers/dryers (e.g. full-size), fireplace, and a private deck. Positioned on a dead-end, quiet street, this turnkey investment sits in a highly desirable neighborhood near Lake Washington, shopping, dining, and easy commuting routes. Seller financing available for qualified buyers: 30% down, 6% interest, 5-year term (negotiable, subject to seller approval). The Juanita submarket is an area characterized by consistently low vacancy, durable rental demand, and proximity to Eastside employment hubs including tech, healthcare, biotech, and space. All four units are configured as 2-bedroom / 1-bathroom apartments averaging approximately 804 square feet, with in-unit washer and dryer and dedicated parking within an 8-stall lot. It’s a well-maintained and centrally located fourplex walking distance to Lake Washington — long-term tenants, RM 2.4 zoning, immediate rent upside.

10016 NE 117th Court, Kirkland

Listing courtesy of Wilson Northwest Investments.

$1,695,000
2571256 MLS ACTIVE Status
Born in 1909, this 4,400 square foot Old Grand Dame sits majestically above the street, one block from Green Lake's beloved 2.8-mile loop, three blocks from the charming Tangle town business district, & at the heart of Seattle's most coveted trifecta: Green Lake, Tangle town & Wallingford. Rare, storied, & alive with possibility. Originally built as a live-in boarding house, this turn-of-the-century treasure spans Woodlawn to Meridian w/ views out to the lake & the kind of bones that make architects & dreamers go quiet. High ceilings on every floor, box-beam ceiling details, classic fixtures & finishes, two full kitchens & an oversized three-car garage/shop space. Whether you envision a grand single-family restoration, a boutique bed-&-breakfast, a co-housing sanctuary, multigenerational living, or a savvy legal duplex income property, this open palette awaits your vision. Six to seven bedrooms (though 2-3 presently non-conforming), three baths & LR1 RC(M) zoning, unlocks multi-family as well as residential commercial potential & puts multiple possibilities, firmly in your hands. Step outside & the neighborhood does the rest; two PCC Markets, Whole Foods, boutique fitness studios, beloved local restaurants & bars, w/ the energy of Phinney Ridge, Maple Leaf, Fremont, Greenwood, Wallingford & the university, just blocks away. Walk Score 81, Bike Score 87, & ten minutes to Downtown. If you've ever dreamed of breathing new life into something truly one of a kind.

6238 Woodlawn Avenue N, Seattle

Listing courtesy of Windermere RE Greenwood.

$2,300,000
2570809 MLS ACTIVE Status
Positioned in the heart of Seattle’s highly sought-after University District, this exceptional property offers a rare blend of versatility, comfort, and income potential just minutes from the University of Washington. Featuring three separate living spaces, including a beautifully remodeled 3,092 sqft main residence with a fully finished lower level complete with its own private entrance and kitchen, plus a stunning detached 1,058 sqft DADU, this is an outstanding opportunity for investors, multi-generational living, or owner-occupants seeking rental income. Extensively renovated with permits, the property features a new roof, siding, windows, updated plumbing, modern electrical systems, and brand-new air conditioning systems in both the main home and DADU to keep you comfortable year-round. Inside, you'll find beautifully remodeled kitchens and bathrooms, designer cabinetry, premium countertops, ceramic tile, stainless steel appliances, and quality finishes throughout. The lower level offers excellent flexibility for rental income or extended living, while the detached DADU provides privacy and strong rental appeal. Outside, enjoy professionally landscaped, fully fenced grounds with a secure electric gate, ample parking and easy maintenance yard. With three separate living areas, extensive updates, and a prime location in one of Seattle’s most desirable neighborhoods, this property is a rare opportunity with exceptional investment and lifestyle potential.

5520 Brooklyn Avenue NE, Seattle

Listing courtesy of KW Lake Washington So.

$1,375,000
2570127 MLS ACTIVE Status
Prime Ballard Investment Opportunity! This spacious triplex offers exceptional flexibility for investors or owner-occupants seeking rental income in one of Seattle's most desirable neighborhoods. Each residence offers character, functionality, and a thoughtful floor plan, with cozy fireplaces adding warmth and charm to two units. The updated upper front unit (827) features two bedrooms and one bathroom and includes a garage. The upper back unit (829) offers a spacious three-bedroom, two-bathroom layout with a cozy fireplace, deck/balcony, and also includes a garage. The lower-level back unit (829B) features two bedrooms, one bathroom, a wood-burning fireplace in the living room, and a dedicated den/home office—ideal for working from home or additional flex space. Newer water heaters for all three units are conveniently located in the shared laundry room with newer washing machine. A lovely backyard provides additional outdoor space for residents to relax and enjoy. With two units currently vacant and available for showings, this property presents an excellent opportunity to occupy one unit, maximize rental income, or add a strong asset to your investment portfolio. Long or Short term rentals. Please do not disturb the tenant in the upper back unit (#829). An exceptional opportunity to own a multi-unit property in the heart of Ballard. Buyer to verify all information to their satisfaction.

827 NW 62nd Street, Seattle

Listing courtesy of Coldwell Banker Bain.

$849,500
2567104 MLS ACTIVE Status
Come and see! Perched among a lush canopy of trees in Federal Way’s coveted Redondo neighborhood, this loaded property offers incredible income potential. Spanning 3,852 square feet, this exceptional property is thoughtfully designed as three completely separate, fully equipped living spaces, making it the ultimate setup to live in one unit and rent the other two, host multi-generational living, or lease all three for maximum investment returns. Every single residence boasts its own private kitchen, dedicated in-unit laundry, and an expansive deck designed to soak in the tranquil treed overlook and coastal air. Inside, the home features two expansive primary residences alongside a charming studio apartment above the two-car garage. The 1,530-square-foot main-level unit and the 1,430-square-foot lower-level unit each offer two bedrooms, two bathrooms, and remarkably spacious living areas. Tucked above the garage, the 572-square-foot apartment captures true canopy views, giving tenants or guests their own secluded haven. All this comes with a detached two-car garage and plenty of extra off-street parking. Minutes from the vibrant Redondo Beach boardwalk and Saltwater State Park trails, this unique retreat combines coastal Northwest living and unmatched financial versatility with major commuter convenience, with its proximity to major commuter routes like I-5 and Route 99, shopping hubs including The Commons at Federal Way, and light rail and bus extensions.

28400 16th Avenue S, Federal Way

Listing courtesy of Tribeca NW Real Estate.

$3,125,000
2567993 MLS ACTIVE Status
A rare opportunity to acquire two new-construction, income-producing units in Kirkland’s coveted East of Market neighborhood. East of Market remains one of Kirkland’s most sought-after neighborhoods, offering the best of both worlds—a quiet, established setting w/ the energy + convenience of downtown just moments away. Waterfront parks + beaches, restaurants, cafés, boutique shopping, Kirkland Urban + the Cross Kirkland Corridor are all within easy reach, creating the walkable lifestyle that continues to make Kirkland such a desirable place to live. The location also places residents near Google’s Kirkland campus and within convenient reach of Downtown Bellevue, Microsoft’s Redmond campus + the broader Bellevue-Redmond technology employment corridor. Highly regarded Lake Washington schools add to the long-term appeal, with highly regarded Peter Kirk Elementary just a few blocks away. Easy access to I-405 and SR-520 connects the property throughout the Eastside and into Seattle, supporting continued appeal to a strong professional tenant pool. With new construction comes another meaningful investment advantage: limited deferred maintenance and fewer anticipated near-term capital expenditures compared with traditional small multifamily properties. The result is a distinctive Kirkland investment opportunity combining immediate income, low-maintenance ownership, two detached residences, and long-term exposure to one of the Eastside’s most desirable residential markets.

634 + 636 Eleventh Avenue, Kirkland

Listing courtesy of Windermere Real Estate/East.

$2,750,000
2568199 MLS ACTIVE Status
The Portage Bay Plaza located at 3261 Fuhrman Ave E, presents a rare opportunity to invest in the extremely well-located north end of Portage Bay between the Eastlake and Montlake neighborhoods. The property offers large floor plans with a mix of seven 1-bedroom / 1-bath units and two 2-bedroom / 1.5-bath units, plus ample off-street parking. Wood-frame construction with a well-maintained brick exterior gives the building genuine mid-century character, while private decks with views of the Bay set it apart from typical residences in the neighbor-hood. Sitting on a large 9,220 SF parcel zoned LR3 (M), the property also carries long-term redevelopment optionality for townhomes or a larger apartment project. Current ownership has well maintained the property with meaningful recent capital improvements, while a new owner has an attractive opportunity to increase income by bringing on professional management and completing interior renovations. The majority of units feature hardwood or LVP flooring, with recent upgrades including updated cabinetry, quartz countertops, stainless-steel appliances, and mod-ern lighting. This leaves a clear and straightforward path to increasing value: finish the renovation program in the units that have not yet been updated, push parking income toward market, and add in-unit laundry to more units, which ownership has already proven out by converting one unit during their hold.

3261 Fuhrman Avenue E, Seattle

Listing courtesy of Westlake Associates, Inc..

$850,000
2566584 MLS ACTIVE Status
Two living spaces. Multiple income strategies. One unbeatable Seattle location. Here is house-hacking opportunity in the heart of the Central Area/First Hill. Live in one unit while renting the other to help offset your mortgage, space for multigenerational living, or rent both for added income potential. The spacious main-level residence offers 2 bed and 1 full bathroom, an open & light-filled floor plan, and beautifully refinished original hardwood floors. The updated kitchen features white shaker cabinetry, quartz countertops, stainless-steel appliances, and a gas range. Upstairs, the bright 1 bed, 1 bath residence has its own kitchen, dining, in-unit washer/dryer combination, and an abundance of windows that fill the space with natural light. This property delivers something increasingly difficult to find in central Seattle: real outdoor space. The fully fenced grounds include an expansive front yard, backyard space, and a private side yard with a covered gazebo perfect for entertaining, gardening, pets, or simply relaxing outside. Fresh exterior paint, one dedicated parking space, and plentiful street parking complete the package. With a 98 Walk Score, this location puts Seattle U, Swedish Medical, Harborview, Seattle Central College, cafés, restaurants, groceries, and transit within easy reach. Whether you are searching for a home that can help pay for itself, a multigenerational setup, or a property rental potential, this is the flexibility you have been waiting for.

1609 E Alder Street, Seattle

Listing courtesy of Windermere R.E. Shoreline.

$4,200,000
2566437 MLS ACTIVE Status
Constructed in 1959 and comprehensively renovated in 2016, The Edge Apartments is an exceptional 13-unit apartment community offers investors a rare opportunity to acquire a stabilized, turn-key asset in one of Seattle's most desirable rental markets. The extensive renovation modernized the property throughout, including updated plumbing and electrical systems, creating a low-maintenance investment with strong in-place cash flow and long-term ownership appeal. The property consists of 8 one-bedroom and 5 two-bedroom apartments, each designed with finishes that today's renters value. Every unit features quartz countertops, stainless steel appliances, in-unit washers and dryers, and contemporary LVT flooring in the common areas. Select apartments include fireplaces, while the top-floor residences enjoy private balconies with peek-a-boo views of the Seattle skyline and Puget Sound. Residents also benefit from a spacious second-floor patio with a community grill, providing an attractive outdoor gathering space that enhances the tenant experience. The property offers an attractive value-add component through ten individual secured garage and storage spaces. Currently generating approximately $10,800 in annual income, these oversized garages provide immediate supplemental revenue with meaningful upside through rent increases to market rates. The property is well-positioned to capitalize on continued tenant demand for secure parking and storage.

2515 Thorndyke Avenue W, Seattle

Listing courtesy of Westlake Associates, Inc..

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