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Listed by Jesse Tronson • AQUA Real Estate.
FOR SALE

$393,000

Est. $2,177/mo

2 bd•2 ba•1,007 sq ft

21507 42nd Avenue S #E2, SeaTac, WA 98198

• Listed Oct 15, 2026•2 days active · 2 cumulative

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★★★★★5.0·1,242 Google reviews

Listing Broker: AQUA Real Estate; Jesse Tronson; 425-681-8616; jesse@getaqua.com

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Listing Broker: AQUA Real Estate; Jesse Tronson; 425-681-8616; jesse@getaqua.com

About this home

Welcome to River Ridge! This move-in ready 2-bedroom, 2-bath end-unit condo offers comfort, privacy, and convenience in a peaceful greenbelt setting. Fresh interior paint, serene views, and a covered deck create an inviting space to relax and unwind. The kitchen features stainless steel appliances, brand-new Corian countertops, and updated lighting. The primary bath includes heated floors for an added touch of comfort. Enjoy easy access to SeaTac Airport, Sounder Train Station, ShoWare Center, shopping, restaurants, golf, trails, parks, dog parks, and major commuter routes including I-5, 167, and 405. With community amenities nearby and no rental cap, this is a fantastic opportunity for both homeowners and investors.

Property type
Condo
Year built
2004
Interior
1,007 sq ft
Lot size
Not listed
Parking
1-car garage
Price / sq ft
$390
HeatingBaseboard
CoolingNone
Property taxes$3,942.32/yr (est.)
HOA dues$358/mo
School districtKent

Listed by Jesse Tronson • AQUA Real Estate

Listing updated: October 16, 2026 at 05:03am

RexMont checked: moments ago

Source: NWMLS as Distributed by MLS Grid #2592787

Around this home

RexMont OfferEdge™

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21507 42nd Avenue S #E2, SeaTac, WA 98198

List price
$393,000
Down payment
$78,600

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Source:RexMont analysis of Northwest MLS sales data for this ZIP code plus third-party market data (RentCast). The estimates are RexMont's, not Northwest MLS listing data.

Estimates only and not guaranteed. Consult a RexMont agent for accurate, personalized guidance before making an offer. RexMont OfferEdge™ · © 2026 RexMont Real Estate. Proprietary tool.

Property details

Interior features

  • End Unit
  • Fireplace
  • Insulated Windows
  • Primary Bathroom
  • Walk-In Closet(s)
  • Water Heater
  • Fireplace (gas)

Kitchen

  • Dishwasher
  • Disposal
  • Double Oven
  • Dryer
  • Microwave
  • Refrigerator
  • Stove(s)/Range(s)
  • Washer

Bedrooms

  • 2 bedrooms total
  • 2 on the main level

Bathrooms

  • 2 full bathrooms
  • 2 on the main level

Layout

  • Condo (1 Level)

Flooring

  • Ceramic Tile
  • Engineered Hardwood
  • Carpet

Heating & cooling

  • Baseboard heating
  • None cooling

Schools

Ratings via SchoolDigger

Kent School District

Assigned schools for this property per the listing's MLS data. School district boundaries change — verify the exact assigned schools with the district before purchasing.

Condominium facts

As entered by the listing broker on Northwest MLS

Building & HOA

Building
River Ridge Condo
Floor of unit
2
Units in building
8
Stories in building
3
FHA-approved project
No
Common interest community
No
HOA dues
$358
Dues frequency
Monthly
Dues include
Common Area Maintenance, Lawn Service, Road Maintenance, Snow Removal
Special assessment
false
Association contact
Alvery Evans | VIS Group, Inc.
First right of refusal
No

Rules

Rental cap
No Rental Cap
Short-term rentals allowed
No
Pets
Yes
55+ community
No

Unit

Unit features
Balcony/Deck/Patio,End Unit,Insulated Windows,Primary Bath,Walk-in Closet
Common property features
Athletic Court,Fire Sprinklers,Garden Space,Playground,Trails
Entry location
Main
Access stairs
1

Systems

Energy source
Electric,Natural Gas
Power production
Electric, Natural Gas
Water heater
Electric
Water heater location
Hall Bathroom
Power company
Puget Sound Energy
Water company
YES Energy Management
Sewer company
YES Energy Management
Gas company
Puget Sound Energy
Garbage service
Recology King County
Irrigation water rights
No
Internet connected
Xfinity
Cable connected
Xfinity

Green & certifications

Energy-efficient features
Insulated Windows

Rooms & extras

Bathtubs
2
Showers
2
Fireplaces on main
1

New construction

Square footage source
Realist
Effective year built source
Public Records

Neighborhood mobility

Doorstep, Pedal & Station Scores

Three RexMont scores for this exact address: what is on foot, what is by bike, and what rides past the door.

Ground Truth™

The ground, the slope, the flood zone and the noise at this address

Read from public hazard, flood, terrain and noise maps for this exact home.

Address Insider™

The members' report

Commute, transit, zoning and ADU potential, internet providers and the lifestyle around the home: the nearest grocery, coffee, park, services and transit stop. One free registration opens every home on rexmont.com.

Members

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Sales & Tax Records for 21507 42nd Avenue S #E2

NWMLS via MLS Grid · King County Assessor

Every listing, pending, price change and closing filed on this home with the NWMLS, the county’s recorded sales, and its assessed values by tax year.

  1. Oct 15, 2026
    Listed
    NWMLS via MLS Grid · #2592787
    $393,000
    $390/sq ft
  2. May 5, 2023
    Sold
    NWMLS via MLS Grid · #2056407
    $425,000
    $422/sq ft
  3. Apr 21, 2023
    Pending
    NWMLS via MLS Grid · #2056407
    $424,995
    $422/sq ft
  4. Apr 15, 2023
    Listed
    NWMLS via MLS Grid · #2056407
    $424,995
    $422/sq ft
  5. May 16, 2018
    Sold
    NWMLS via MLS Grid · #1272648
    $309,481
    $307/sq ft
  6. Apr 24, 2018
    Pending
    NWMLS via MLS Grid · #1272648
    $280,000
    $278/sq ft

Down payment assistance

6 programs may be available to provide you with up to $55,000 in down payment assistance, depending on your specific information.

Northwest MLS lists this home as eligible for down payment assistance programs

Source: program list compiled by RexMont from ARCH (A Regional Coalition for Housing) member-jurisdiction information. This is not Northwest MLS listing data.

Mortgage payment forecast

$2,962 per month

Great rate
Principal and interest
Property taxes
HOA dues
Home insurance

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Source: RexMont estimate, not Northwest MLS listing data. Interest rates from Freddie Mac's Primary Mortgage Market Survey via FRED (Federal Reserve Bank of St. Louis). Property tax and HOA dues from the NWMLS listing where provided, otherwise estimated; insurance estimated at 0.3% of price per year.

Estimate only. Actual payment depends on credit, lender, and program. PMI not included for down payments below 20%.

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Listing Broker: AQUA Real Estate; Jesse Tronson; 425-681-8616; jesse@getaqua.com

Market pulse

SeaTac is a balanced market.

Supply and demand are roughly in balance. Neither side has a clear edge.

Buyer's marketSeller's market
  • Offer insight: Homes typically sell with one offer near asking price.

  • List to sale price: The average home sells very close to list price.

  • Time on market: The average home goes pending in around 79 days.

Recent sales nearby

Within 1 mile · last 6 months
  • $362,500 Sold

    3 weeks ago

    2 bd•2 ba•Condo

    21250 40th Way S #B, SeaTac, WA 98198

    6%

    Under list

    77

    Days on market

    0.2 mi

    Distance

  • $200,000 Sold

    3 weeks ago

    1 bd•1 ba•Condo

    22242 24th Avenue S #F-45, Des Moines, WA 98198

    5%

    Under list

    54

    Days on market

    1.0 mi

    Distance

  • $190,000 Sold

    3 weeks ago

    1 bd•1 ba•Condo

    22238 24th Avenue S #L86, Des Moines, WA 98198

    5%

    Under list

    57

    Days on market

    1.0 mi

    Distance

  • $555,000 Sold

    4 weeks ago

    3 bd•2.5 ba•Condo

    21251 S 40th Place #45, SeaTac, WA 98198

    1%

    Under list

    56

    Days on market

    0.2 mi

    Distance

Closed sales from MLS GRID / NWMLS within the past 6 months, matched on property type and within 1 mile. Comps approximate.

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Market data from MLS GRID / NWMLS · Updated Oct 2026

Information and statistics derived from Northwest Multiple Listing Service. Source: Northwest Multiple Listing Service, as distributed by MLS GRID.

MLS GRID Disclaimer

Based on information submitted to the MLS GRID as of October 17, 2026 at 12:09 PM PT (date and time MLS GRID Data was obtained). All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

Listing information courtesy of Northwest Multiple Listing Service (NWMLS). The listing data relating to real estate for sale on this web site comes in part from the Northwest Multiple Listing Service. Real estate listings held by brokerage firms other than RexMont Real Estate are marked with the “Listing courtesy of NWMLS” designation. Information provided is for the consumer’s personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

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© 2026 Northwest Multiple Listing Service. All rights reserved.

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