13204 12th Avenue SW, Burien, WA 98146

Property 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 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.

Listing Status:

Active

Data Last Updated:

September 23, 2026 at 7:19AM

Listing Office:

Kidder Mathews : 360-705-2800

Listing Agent:

Max Frame : 360-705-2800

MLS ID:

2584770

Interior

• Flooring: Vinyl PlankCarpet
• A/C: None
• Heating: Forced Air
• Fireplace: Fireplaces: 0

Exterior

• General: Wood Products
• Parking: Parking spaces: 8

Construction

• Roofing: Composition
• General: 55 - 5-9 UnitsPoured Concrete

Location

• HOA Amenities: 0.0
• Originating MLS: nwmls
• School District: Highline
• County: King

Lot

• Zoning: 1823049146
• View: BayView

Utilities

• Sewer: Sewer Connected

Financial

• Source: nwmls