Active
6 beds5 baths6,260 sqft
13204 12th Ave SW, Burien, WA 98146
Est: $9,717/moGet pre-approved
Multi FamilyProperty Type
0.31 acresLot Size
1988Year Built
$256/sq ftPrice per sq ft
8 carsParking Spaces

Description

Discover Castlemonte Apartments, an 8-unit investment opportunity located at 13204 12th Ave SW in Burien. Built in 1988, the property features 6,260 rentable square feet across two structures on a 13,350 SF lot zoned MU-1. The unit mix includes a studio, six spacious two-bedroom apartments, and a detached 2-bedroom single-family rental with a private yard. One unit is non-conforming. Property amenities include private balconies and patios, 14 off-street parking stalls, common laundry, and select...Discover Castlemonte Apartments, an 8-unit investment opportunity located at 13204 12th Ave SW in Burien. Built in 1988, the property features 6,260 rentable square feet across two structures on a 13,350 SF lot zoned MU-1. The unit mix includes a studio, six spacious two-bedroom apartments, and a detached 2-bedroom single-family rental with a private yard. One unit is non-conforming. Property amenities include private balconies and patios, 14 off-street parking stalls, common laundry, and select units with territorial views. Recent improvements include a composition roof installed in 2021. Offered at a 6.75% in-place cap rate, Castlemonte presents an opportunity to increase NOI through rental upside and operational improvements. The two-structure configuration also offers potential to explore subdividing and selling the single-family home separately, subject to buyer verification and municipal approval. Conveniently located near Downtown Burien, Sea-Tac Airport, and major employment centers throughout the Puget Sound region.
Days on Market Listed Today
Cumulative days on Market: 0
  • Listed by: Max Frame 360.705.2800 max.frame@kidder.com • Kidder Mathews
Last updated: 09/18/2026 04:17 PM • Source: NWMLS as distributed by MLS GRID, MLS#: 2584770

Location

Listing Courtesy of Kidder Mathews
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$9,717 per month

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Principal and Interest

$8,268

Property Taxes

$1,449

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Property Information for 13204 12th Avenue Southwest

Property Details
  • Taxes: $17,385 / year
  • MLS Type: Residential Income
  • County: King County
  • Community Name: Burien
  • School District: Highline
  • View: Bay
  • Number of Assigned Spaces: 8
  • Total Covered Parking: 0
  • Entry Date: 09-18-2026
  • Energy Source: Electric
  • Sewer: Sewer Connected
Building Information
  • Stories: 4
  • Residences: 4
  • Year Built: 1988
  • Lot Size: 0.31 AC / 13,350 SF
Summary
Location and General Information
  • Style: 55 - 5-9 Units
  • Area: 130 - Burien/Normandy Park
  • Effective Year Built Source: Public Records
  • Directions: 13204 12TH AVE SW BURIEN, WA 98146
  • Leased Items: None
  • Property Sub Type: MULT
  • View: Yes
  • Waterfront: No
Taxes and HOA Information
  • Tax Year: 2026
Parking
  • Garage Spaces: 0.0
  • Number of Carport Spaces: 0.0
  • Carport: No
  • Open Parking: No
Virtual Tour
Interior and Exterior Features
Bathroom Information
  • Full Baths Upper: 0
  • Three Quarter Baths Upper: 0
  • Half Baths Upper: 0
  • Main Level Bathrooms: 0
Bedroom Information
  • Bedrooms Upper: 0
Interior Features
  • Fireplaces Total: 0
  • Floor Covering: Vinyl Plank, Carpet
  • Amenities: Coin Op Laundry
  • Cooling: No
  • Cooling: None
  • Fireplace: No
  • Heating: Yes
  • Heating: Forced Air
  • FIRPTA: No
Exterior Features
  • Exterior: Wood Products
  • Roof: Composition
Property
Utilities
  • Water/Sewer/Garbage: 5793
  • Power Company: Seattle City Light
  • Sewer Company: Southwest Suburban Sewer District
  • Water Company: King County Water
  • Power Production Type: Electric
Property and Assessments
  • New Construction YN: No
  • Foundation: Poured Concrete
  • First Right Of Refusal: false
  • MLS Square Footage Source: KCPV
  • Preliminary Title Ordered: Yes
  • Senior Community: No
  • Special Listing Conditions: None
  • Year Built Effective: 1988
  • Photos Count: 37
Lot Information
  • Lot Size Source: KCPV
  • Parcel Number Free Text: 1823049146
  • Building Condition: Good
  • Calculated Square Footage: 6260
  • Structure Type: Multi Family
  • Square Footage Finished: 0
  • Square Footage Unfinished: 0
  • Building Area Total: 6260.0
  • Building Area Units: Square Feet
  • Property Type: Residential Income
  • Elevation Units: Feet
  • Irrigation Water Rights: No
Multi Family
Building Details
  • Total Uncovered Parking: 8
  • Number of Stories in Building: 4
  • Vacancy Rate: 5
  • Number Of Units Total: 4
  • Units Below Grade: false
  • Units In Building Total: 8
Financing / Income and Expenses
  • Electric Expense: $5,793
  • Total Expenses: 52120
  • Gross Adjusted Income: 160070
  • Gross Rent Multiplier: 15
  • Gross Scheduled Income: $168,495
  • Insurance Expense: $2,012
  • Net Operating Income: $107,950
  • Other Expenses: $15,344
  • Total Monthly Income: 14040
  • Fuel Expense: $5,793
Unit 1
  • Name Unit 1: Studio - 1
  • Washer/Dryer Unit 1: false
  • Range/Oven Unit 1: true
  • Refrigerator Unit 1: true
  • Dishwasher Unit 1: true
  • Square Feet Unit 1: 535
  • Rent Unit 1: $1,000.00
  • Bedrooms Unit 1: 0
  • Fireplaces Unit 1: 0
  • Bathrooms Unit 1: 1
Unit 2
  • Name Unit 2: 2bed 1 bath - 5
  • Washer/Dryer Unit 2: false
  • Range/Oven Unit 2: true
  • Refrigerator Unit 2: true
  • Dishwasher Unit 2: true
  • Square Feet Unit 2: 750
  • Rent Unit 2: $1,718.00
  • Bedrooms Unit 2: 2
  • Fireplaces Unit 2: 0
  • Bathrooms Unit 2: 1
Unit 3
  • Name Unit 3: 2bed 2 bath - 1
  • Washer/Dryer Unit 3: false
  • Range/Oven Unit 3: true
  • Refrigerator Unit 3: true
  • Dishwasher Unit 3: true
  • Square Feet Unit 3: 975
  • Rent Unit 3: $2,350.00
  • Bedrooms Unit 3: 2
  • Fireplaces Unit 3: 0
  • Bathrooms Unit 3: 2
Unit 4
  • Name Unit 4: 2bed 1 bath SFR - 1
  • Washer/Dryer Unit 4: false
  • Range/Oven Unit 4: true
  • Refrigerator Unit 4: true
  • Dishwasher Unit 4: true
  • Square Feet Unit 4: 1000
  • Rent Unit 4: $2,100.00
  • Bedrooms Unit 4: 2
  • Fireplaces Unit 4: 0
  • Bathrooms Unit 4: 1
Rental
Rent Information
  • Occupant Type: Tenant
  • Leasable Area: 6260.0

Property History for 13204 12th Avenue Southwest

DateEvent & SourcePriceAppreciation
Sep 18, 2026

Listed (Active)

NWMLS #2584770

$1,600,000
DateEvent & SourcePrice
09/18/2026

Listed (Active)

NWMLS #2584770

$1,600,000

For completeness, we often displays two records for one sale: the MLS record and the public record.

Public Records for 13204 12th Avenue Southwest

Taxable ValueLand$220,200Additions$1,242,800Total$1,463,000
Tax Record2026$17,385 ($1,449 / month)
Home Facts
Baths1Total Finished SqFt5,200 SqFtAbove Ground SqFt5,200 SqFtStories3Lot Size13,350 SqFtStyleMulti-Family Res (5+ Units)Year Built1988Year Renovated2005ZoningMU-1CountyKINGAPN182304-9146

Schools near 13204 12th Avenue Southwest

This home is within Highline School District.
Rating
School
Type
Grades
Distance
Public - PK to 5
Public - 6 to 8
Public - 9 to 12
Public - 10 to 12
Rating
School
Distance
Hazel Valley Elementary School
PublicPK to 5

Cascade Middle School
Public6 to 8

Highline High School
Public9 to 12

Gateway To College
Public10 to 12

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

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13204 12th Avenue Southwest is a multi-family home for sale in Burien, WA 98146. This property was listed for sale on September 18, 2026 by Kidder Mathews, it's currently listed at $1,600,000. This listing's school district is Highline School District. Nearby schools include Hazel Valley Elementary School, Cascade Middle School and Highline High School. 13204 12th Avenue Southwest is a 6-bed, 5-bath, 6,260 sqft multi-family home built in 1988.

No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of any information, descriptions or measurements (including square footage measurements and property condition), such should be independently verified through appropriate means, including, but not limited to, in person inspection and public records, and Compass International Holdings, its subsidiaries, affiliates and independently owned and operated franchisees, and their affiliated agents and associated third parties expressly disclaim any liability in connection therewith. Photos may be virtually staged or digitally enhanced and may not reflect actual property conditions. Offers of compensation are subject to change at the seller's discretion. No financial or legal advice provided. Equal Housing Opportunity.

Listing Courtesy of Kidder Mathews

Based on information submitted to the MLS GRID as of 09/18/2026 04:17 PM. 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. Properties displayed may be listed or sold by various participants in the MLS. IDX information is provided exclusively for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data is deemed reliable but is not guaranteed by MLS GRID. Use of the MLS GRID data may be subject to an end user license agreement prescribed by the applicable MLS of the Member Participant, if any, and as amended from time to time.