Thurston County Assessor
Parcel Number: 51203100100
 
Situs Address: 20539 GRAND MOUND WAY SW
 
Owner: COSGRO, MARY E
Address:20539 GRAND MOUND WAY SW
 CENTRALIA, WA 98531
 
Taxpayer: COSGRO, MARY E
Address:20539 GRAND MOUND WAY SW
 CENTRALIA, WA 98531
 
Abbreviated Legal:Section 14 Township 15 Range 3W Quarter NE NE Plat GRAND MOUND BLK PTN 31 & 32 Document 5/73 LYING SELY OF SELY LINES OF LOTS 54 & 55 OF GRAND VALLEY FRUIT & GARDEN TRACTS, TOGW VAC ST
 
Date: 2/21/2026
 
Sect/Town/Range:14 15 3W
 
Size:1.28 Acres
UseCode:18 Other Residential
TCA Number:490
Neighborhood:10G2
Property Type:MOB
Total Living Units:1
Taxable:YES
Active Exemptions:None
Fire District:FIRE DISTRICT #01
Fire District:W THURSTON RFA
School District:ROCHESTER S.D. #401
 
Water Source:WELL
Sewer Type:SEPTIC

Market Values

Tax Year2026202520242023202220212020201920182017
Assessment Year2025202420232022202120202019201820172016
 
Market Value Land$167,000$152,000$117,200$81,400$101,900$68,600$56,200$51,700$47,100$46,950
Market Value Buildings$108,500$104,700$109,600$127,000$91,300$79,800$81,900$69,300$56,600$44,800
Market Value Total$275,500$256,700$226,800$208,400$193,200$148,400$138,100$121,000$103,700$91,750

Manufactured Housing

Manufacturer:FLEETWOOD
Model:BROOKFIELD
Year Built:1993
Living Area:1144
Length:44
Width:26
Width Type:DOUBLE
Skirting Type:WOOD
Quality:AVERAGE
Condition:AVERAGE

Land Characteristics

Land Flag1100
 
Lot Square Footage55943
 
Lot Acreage1.28
 
Effective FrontageNot Listed
 
Effective DepthNot Listed
 
Land Influence(s)No Influences Listed

Sales

Sale Date:03/21/2012
Price:$50,000
Excise:371711
Sale Type:STATUTRY WARNTY DEED
Recording Number:4257217
Seller:SLINGERLAND FLORENCE
Buyer:ANDERSON KENT A & MARY E
Multiple Parcel Sale:N
 

The Assessor's Office maintains property records on approximately 112,000 parcels in Thurston County for tax purposes. Though records are updated regularly, the accuracy and timeliness of published data cannot be guaranteed. Any person or entity that relies on information obtained from this website does so at his or her own risk. Neither Thurston County nor the Assessor will be held liable for damage or losses caused by use of this information. All critical information should be independently verified.
 

Office of the Assessor

Steven J. Drew, Assessor
3000 Pacific Ave SE, Olympia WA 98501
Customer Service (360)867-2200 -- Fax (360)867-2201 -- TDD (360)754-2933