31527 3rd Ave, Black Diamond, WA 98010 Property Records

King County property record for 31527 3rd Ave, Black Diamond, WA 98010

Property Summary

Property TypeMedical Building
Details1,176 sqft · built 1975
Lot Size0.062 acres (2,700 sqft)
OwnerCompany Name on Record
Last Sale$375,000 (Aug 2022)
Tax Bill$3,143 (2026)
Deeds & MortgagesAug 2022 Sale & Mortgage
Jan 2017 Sale
Flood ZoneZone X (minimal risk)
APN112106-9071

Property Details

APN / Parcel Number

Primary APN112106-9071
Alternative APN
  • 112106907101

Interior

Stories1 Story
Building Area1,176 sqft Gross Area

Exterior

Year BuiltBuilt 1975
Effective Year BuiltEffective 2010
Architectural StyleCustom Design
Construction TypeWood
Fire ResistanceWood or Wood & Steel Frame
Lot Area2,700 sqft (0.062 acres)

Utilities, Heating & Cooling

Cooling SystemHVAC
Heating SystemHVAC
SewerMunicipal
Water SourceCommercial

Location & Zoning

Account Number112106907101
Street Address31527 3RD AVE
CityBLACK DIAMOND
StateWA
Zip98010-9731
Property CategoryCommercial
Property TypeCommercial > Office > Medical Building
Local Zoning CodeCC
Legal DescriptionPOR OF SE 1/4 BEG 1309.55 FT S & 179.81 FT E OF CTR OF SEC TH S 17-32-50 E 60 FT TH N 72-27-10 E 45 FT TH N 17-32-50 W 60 FT TH S 72-27-10 W 45 FT TO BEG LESS C/M RGTS
Legal Range06
Legal Township21
Legal Section11
Legal Block71
Legal Lot Number112106
JurisdictionKING WA
Township / Civil DivisionENUMCLAW PLATEAU
Census Block Group3
Census Block3017
Census Tract31605

Owner

Source: King County records, as of July 7, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of RecordCompany Name on Record
Mailing Address30419 234TH AVE SE, BLACK DIAMOND, WA 98010-1241
Owner TypeCompany
VestingLimited Liability Partnership

Deeds, Mortgages & Sale History

DateDocument
Aug 16, 2022Warranty Deed, Transfer · Stand-Alone First Mortgage
COLUMBIA STATE BANK
Jan 24, 2017Warranty Deed, Transfer
FIRST AMERICAN

Assessor's Deed Record

Deed NamesName on Deed
Last SaleAug 16, 2022 · Amount on Record
Deed SaleAug 16, 2022 · Amount on Record
Prior SaleJan 24, 2017 · Amount on Record
Deed Document Number202222
Record UpdatedOct 29, 2026

August 2022: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionKING WA
Recording DateAug 16, 2022
Property Address31527 3RD AVE, BLACK DIAMOND, WA 98010-9731
Document Number0000000022
Instrument DateAug 12, 2022
Instrument20220816000022
Transaction TypeTransfer
Record UpdatedAug 25, 2022
Title CompanyFIRST AMERICAN

Transaction

AmountAmount Recorded
DownpaymentDownpayment on Record
Loan-to-Value (LTV)LTV on Record
Tax$6,005.00
Amount AccuracyFull Amount Stated
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address30419 234TH AVE SE, BLACK DIAMOND, WA 98010-1241

Mortgage

Document Number0000000023
DateAug 16, 2022
Instrument20220816000023
Lender
NameCOLUMBIA STATE BANK
TypeBank
Agreement
TypeStand-Alone First Mortgage
AmountAmount Recorded

January 2017: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionKING WA
Recording DateJan 24, 2017
Property Address31527 3RD AVE, BLACK DIAMOND, WA 98010-9731
Document Number0000000276
Instrument DateJan 20, 2017
Instrument20170124000276
Transaction TypeTransfer
Record UpdatedJul 30, 2021
Title CompanyFIRST AMERICAN

Transaction

AmountAmount Recorded
Tax$0.00
Amount AccuracyFull Amount Stated
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address24006 SE 187TH ST, MAPLE VALLEY, WA 98038-7228

Tax Assessment & Valuation

Source: King County assessment roll, as of July 7, 2026

Property Jurisdictions

TypeName
StateWashington
CountyKing County
MunicipalityBlack Diamond City
Unified School DistrictEnumclaw School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2026$3,143.00 (+0.42%)
2025$374,000 (-) Land $80,000 Building $294,000$374,000 (-) Land $80,000 Building $294,000
2024$3,130.00 (+59.61%)$374,000 (+54.23%) Land $80,000 Building $294,000$374,000 (+54.23%) Land $80,000 Building $294,000
2022$1,961.00$242,500 Land $80,000 Building $162,500$242,500 Land $80,000 Building $162,500

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective September 23, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Nearby Flood Policies1 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskLow
lower than 80% of the US · lower than 84% of Washington
Wildfire Likelihood0.01% annual chance
ExposureIndirect
within ember reach
Adjoins Burnable LandYes

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemBLACK DIAMOND WATER DEPT
serves 6,407 people · EPA ID WA5307220
Water SourceGroundwater
Last State InspectionJan 2023
Lead2 ppb (2023–2025)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 65 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable
2,000 / 250
Starlink
Satellite
280 / 30

May also be available: Skynet Broadband.

Nearby Properties on 3rd Ave

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