Thurston County Assessor
Parcel Number: 12920330302
 
Situs Address: 4138 GRAVELLY BEACH LOOP NW
 
Owner: KOSTER, MARK J & AMY
Address:4138 GRAVELLY BEACH LOOP NW
 OLYMPIA, WA 98502
 
Taxpayer: KOSTER, MARK J & AMY
Address:4138 GRAVELLY BEACH LOOP NW
 OLYMPIA, WA 98502
 
Abbreviated Legal:Section 20 Township 19 Range 2W LL990765TC LT 1 Document 3283788
 
Date: 2/21/2026
 
Sect/Town/Range:20 19 2W
 
Size:5.00 Acres
UseCode:11 Single Unit
TCA Number:346
Neighborhood:11XS
Property Type:RES
Total Living Units:1
Taxable:YES
Active Exemptions:None
Fire District:FIRE DISTRICT #13
School District:GRIFFIN S.D. #324
 
Water Source:WELL
Sewer Type:SEPTIC

Market Values

Tax Year2026202520242023202220212020201920182017
Assessment Year2025202420232022202120202019201820172016
 
Market Value Land$277,900$254,400$165,200$223,000$216,400$183,900$188,100$150,400$142,800$160,800
Market Value Buildings$330,700$332,300$366,100$374,900$267,700$194,100$154,100$144,500$140,200$207,100
Market Value Total$608,600$586,700$531,300$597,900$484,100$378,000$342,200$294,900$283,000$367,900

Residential Structures

Year Built2000 Fireplaces/Wood Stoves1
Construction1 1/2 STORY Heat TypeFORCED-AIR
Construction QualityAVERAGE Fuel TypeELECTRIC
Physical ConditionAVERAGE Foundation TypeCONCRETE
Number of Bedrooms3 Exterior Wall TypeTEX1-11/PWD
Full Baths1 Roofing MaterialASPHALT-SHNG
Partial Baths1     
   
Residence Square Footage
Main Finished Area1056
Upper Finished Area588
Attached Garage Square Footage
Attached Garage Sqft480
Misc Structures
Covered Porch130
Wood Deck396

Land Characteristics

Land Flag1740
 
Lot Square FootageNot Listed
 
Lot Acreage5
 
Effective Frontage250
 
Effective Depth856
 
Land Influence(s)LG-LAGOON
SH-SALT-HI-BANK
SNV-SALT NO VIEW%
NA-NO ACCESS SALT WATER

Sales

Sale Date:11/19/200903/26/200309/20/2001
Price:$375,000$245,000 
Excise:510033310021293180
Sale Type:STATUTRY WARNTY DEEDSTATUTRY WARNTY DEEDQUIT CLAIM DEED
Recording Number:412352535160153382184
Seller:GRAY MICHAEL A & DIANA SZAMBRANA NEFTALY & KATHRYN CSOWARD JUDITH
Buyer:KOSTER MARK J & AMYGRAY MICHAEL A & DIANA SZAMBRANA NEFTALY & KATHRYN C
Multiple Parcel Sale:NNN
 

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