King County Department of Assessments

Setting values, serving the community, and promoting fairness and equity.

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Department of Assessments

201 South Jackson Street,
Seattle, WA 98104

Office Hours:
Mon - Fri
8:30 a.m. to 4:30 p.m.

TEL: 206-296-7300
TTY relay: 711 or 800-833-4388

PARCEL DATA

Parcel	766670-3290
Name	RIVERSIDE MILL LLC
Site Address	3800 WEST MARGINAL WAY SW 98106
Geo Area	36-20
Spec Area
Property Name	Riverside Mill/United Motor Freight

Jurisdiction	SEATTLE
Levy Code	0010
Property Type	C
Plat Block / Building Number	412 &
Plat Lot / Unit Number	POR
Quarter-Section-Township-Range	NW-18-24-4

Legal Description

SEATTLE TIDE LDS EXT # 1 LOTS 1 THRU 11 OF BLKS 412 & 413 & VAC ST ADJ LESS BNI FORMERLY NP OPERATING PROP LESS STS LESS POR OF LOTS 1, 2 & 3 OF BLK 412 DAF - BEG AT NXN OF S MGN OF SW SPOKANE ST WITH SWLY MGN OF DUWAMISH W WATERWAY TH S 41-06-02 E ALG SD SWLY MGN 83.93 FT TH S 01-08-43 W 27.80 FT TH N 88-51-17 W 53 FT TH N 59-03-00 W 167.91 FT TH N 89-29-14 W 40 FT TH N 00-30-46 E 6.91 FT TO S MGN OF SW SPOKANE ST TH ELY ALG SD S MGN 182.35 FT TO TPOB; TGW POR OF VAC INDIANA AVE PER ORD #46759 & EXC POR DESC IN ORD #112783/KCSCC #80-2-10027-1; LESS POR CONVEYED BY DEED REC #20240812000741
PLat Block: 412 &
Plat Lot: POR

LAND DATA

Highest & Best Use As If Vacant	COMMERCIAL SERVICE
Highest & Best Use As Improved	PRESENT USE
Present Use	Warehouse
Land SqFt	266,348
Acres	6.11

Percentage Unusable
Unbuildable	NO
Restrictive Size Shape	YES
Zoning	MML U/85
Water	WATER DISTRICT
Sewer/Septic	PUBLIC
Road Access	PUBLIC
Parking	ADEQUATE
Street Surface	PAVED

Views

Waterfront

Rainier
Territorial
Olympics
Cascades
Seattle Skyline
Puget Sound
Lake Washington
Lake Sammamish
Lake/River/Creek
Other View

Waterfront Location	DUWAMISH
Waterfront Footage	0
Lot Depth Factor	0
Waterfront Bank
Tide/Shore
Waterfront Restricted Access
Waterfront Access Rights	NO
Poor Quality	NO
Proximity Influence	NO

Designations

Nuisances

Historic Site
Current Use	(none)
Nbr Bldg Sites
Adjacent to Golf Fairway	NO
Adjacent to Greenbelt	NO
Other Designation	NO
Deed Restrictions	NO
Development Rights Purchased	NO
Easements	NO
Native Growth Protection Easement	NO
DNR Lease	NO

Topography
Traffic Noise
Airport Noise
Power Lines	NO
Other Nuisances	NO

Problems

Water Problems	NO
Transportation Concurrency	NO
Other Problems	NO

Environmental

BUILDING

Building Number

Building Description

INDUSTRIAL WAREHOUSE (Bldgs A, C, N)

Number Of Buildings Aggregated

Predominant Use

STORAGE WAREHOUSE (406)

Shape

Rect or Slight Irreg

Construction Class

STRUCTURAL STEEL

Building Quality

LOW COST

Stories

Building Gross Sq Ft

50,000

Building Net Sq Ft

50,000

Year Built

1948

Eff. Year

1967

Percentage Complete

100

Heating System

NO HEAT

Sprinklers

Yes

Elevators

Click the camera to see more pictures.

Picture of Building 2
Current Picture

Accessory

Accessory Type	Picture	Description	Qty	Unit Of Measure	Size	Grade	Eff Yr	%	Value	Date Valued
Moorage: Covrd		Site imps for floating moorage	1			GOOD			5000	11/27/2018

TAX ROLL HISTORY

Account	Valued Year	Tax Year	Levy Code	Appraised Land Value ($)	Appraised Imps Value ($)	Appraised Total Value ($)	Taxable Land Value ($)	Taxable Imps Value ($)	Taxable Total Value ($)
766670329008	2026	2027	0010	15,315,000	3,256,600	18,571,600	15,315,000	3,256,600	18,571,600
766670329008	2025	2026	0010	15,315,000	1,666,600	16,981,600	15,315,000	1,666,600	16,981,600
766670329008	2024	2025	0010	13,472,600	2,861,000	16,333,600	13,472,600	2,861,000	16,333,600
766670329008	2023	2024	0010	12,125,300	2,404,500	14,529,800	12,125,300	2,404,500	14,529,800
766670329008	2022	2023	0010	9,494,800	2,327,400	11,822,200	9,494,800	2,327,400	11,822,200
766670329008	2021	2022	0010	9,494,800	645,400	10,140,200	9,494,800	645,400	10,140,200
766670329008	2020	2021	0010	9,494,800	102,600	9,597,400	9,494,800	102,600	9,597,400
766670329008	2019	2020	0010	7,595,800	1,722,500	9,318,300	7,595,800	1,722,500	9,318,300
766670329008	2018	2019	0010	7,053,300	443,700	7,497,000	7,053,300	443,700	7,497,000
766670329008	2017	2018	0010	6,510,700	1,000	6,511,700	6,510,700	1,000	6,511,700
766670329008	2016	2017	0010	5,696,900	1,000	5,697,900	5,696,900	1,000	5,697,900
766670329008	2015	2016	0010	4,340,400	1,176,600	5,517,000	4,340,400	1,176,600	5,517,000
766670329008	2014	2015	0010	4,340,400	1,167,500	5,507,900	4,340,400	1,167,500	5,507,900
766670329008	2013	2014	0010	4,340,400	689,400	5,029,800	4,340,400	689,400	5,029,800
766670329008	2012	2013	0010	4,340,400	689,400	5,029,800	4,340,400	689,400	5,029,800
766670329008	2011	2012	0010	4,340,400	689,400	5,029,800	4,340,400	689,400	5,029,800
766670329008	2010	2011	0010	4,340,400	1,129,500	5,469,900	4,340,400	1,129,500	5,469,900
766670329008	2009	2010	0010	4,340,400	1,517,300	5,857,700	4,340,400	1,517,300	5,857,700
766670329008	2008	2009	0010	4,340,400	1,517,300	5,857,700	4,340,400	1,517,300	5,857,700
766670329008	2007	2008	0010	4,340,400	1,505,200	5,845,600	4,340,400	1,505,200	5,845,600
766670329008	2006	2007	0010	4,340,400	207,200	4,547,600	4,340,400	207,200	4,547,600
766670329008	2005	2006	0010	3,797,900	1,000	3,798,900	3,797,900	1,000	3,798,900
766670329008	2004	2005	0010	2,984,000	69,000	3,053,000	2,984,000	69,000	3,053,000
766670329008	2003	2004	0010	2,984,000	816,000	3,800,000	2,984,000	816,000	3,800,000
766670329008	2002	2003	0010	2,712,800	887,200	3,600,000	2,712,800	887,200	3,600,000
766670329008	2001	2002	0010	2,712,800	490,400	3,203,200	2,712,800	490,400	3,203,200
766670329008	2000	2001	0010	2,712,800	490,400	3,203,200	2,712,800	490,400	3,203,200
766670329008	1999	2000	0010	2,712,800	194,200	2,907,000	2,712,800	194,200	2,907,000
766670329008	1998	1999	0010	2,441,500	800,700	3,242,200	2,441,500	800,700	3,242,200
766670329008	1997	1998	0010	0	0	0	2,441,500	800,700	3,242,200
766670329008	1996	1997	0010	0	0	0	2,441,500	800,700	3,242,200
766670329008	1995	1996	0010	0	0	0	2,441,500	800,700	3,242,200

SALES HISTORY

Excise Number	Recording Number	Document Date	Sale Price	Seller Name	Buyer Name	Instrument	Sale Reason
3294305	20240812000741	5/8/2024	$264,531.00	RIVERSIDE MILL LLC	SEATTLE CITY OF	DEED	Other
1676875	199904021436	3/14/1999	$4,000,000.00	CEM DEVELOPMENT COMPANY	RIVERSIDE MILL LLC	Statutory Warranty Deed	None
1598316	199803121139	3/5/1998	$0.00	CEM ASSOCIATES INC	CEM DEVELOPMENT CO	Statutory Warranty Deed	Other
1527289	199702070647	2/5/1997	$0.00	SSI REAL ESTATE	CEM ASSOCIATES INC	Statutory Warranty Deed	Other
1328336	199308312432	8/27/1993	$0.00	SEATTLE STEEL INC	SSI REAL ESTATE CO INC	Warranty Deed	Other

REVIEW HISTORY

Tax Year	Review Number	Review Type	Appealed Value	Hearing Date	Settlement Value	Decision	Status
2008	0700649	Local Appeal	$5,845,600	11/1/2007	$5,845,600	SUSTAIN	Completed
1985	8405719	Local Appeal	$0	1/1/1900	$0		Completed

PERMIT HISTORY

Permit Number	Permit Description	Type	Issue Date	Permit Value	Issuing Jurisdiction	Reviewed Date
708974	None	Demolition	9/16/1999	$0	SEATTLE	4/13/2001

HOME IMPROVEMENT EXEMPTION

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Notice mailing date: 07/23/2026

King County Department of Assessments

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