307 3rd Ave S, Seattle, WA 98104 Property Records

King County property record for 307 3rd Ave S, Seattle, WA 98104

Property Summary

Property Type	Commercial Office
Details	41,920 sqft · built 1906
Lot Size	0.165 acres (7,196 sqft)
Owner	Company Name on Record
Tax Bill	$50,242 (2026)
Deeds & Mortgages	Dec 2022 Transfer Dec 2022 Transfer
Flood Zone	Zone X (minimal risk)
APN	`524780-0875`

Property Details

APN / Parcel Number

Primary APN	`524780-0875`
Alternative APN	`524780087507`

Interior

Stories	5 Stories
Building Area	41,920 sqft Gross Area
Basement Area	7,800 sqft
Elevator	Elevator

Exterior

Year Built	Built 1906
Effective Year Built	Effective 1986
Architectural Style	Custom Design
Construction Type	Masonry / Concrete Block
Fire Resistance	Masonry Walls, Wood Interior
Lot Area	7,196 sqft (0.165 acres)

Utilities, Heating & Cooling

Heating System	Steam
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Account Number	524780087507
Street Address	307 3RD AVE S
City	SEATTLE
State	WA
Zip	98104-2684
Property Category	Commercial
Property Type	Commercial > Office > Commercial Office
Local Zoning Code	PSM 100/10
Legal Description	MAYNARDS D S PLAT LESS ST HIST EX RCW 84.26 PLAT BLOCK: 14 PLAT LOT: 7
Legal Range	04
Legal Township	24
Legal Section	05
Legal Subdivision	MAYNARDS D S PLAT
Legal Block	14
Legal Lot Number	7
Jurisdiction	KING WA
Township / Civil Division	SEATTLE
Census Block Group	2
Census Block	2014
Census Tract	9200

Historic Designation

Source: NPS National Register of Historic Places, as of August 1, 2026

Historic District	Within the Pioneer Square-Skid Road District listed 1970 · 141 contributing resources · NRIS 70000086

Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.

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 Record	Company Name on Record
Mailing Address	307 3RD AVE S, SEATTLE, WA 98104-2684
Owner Type	Company
Vesting	Limited Liability Partnership

Deeds, Mortgages & Sale History

Date	Document
Dec 19, 2022	Quit Claim Deed, Transfer Quitclaim
Dec 14, 2022	Quit Claim Deed, Transfer Quitclaim

Assessor's Deed Record

Deed Names	Name on Deed
Record Updated	Sep 20, 2026

December 2022: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	KING WA
Recording Date	Dec 19, 2022
Property Address	307 3RD AVE S, SEATTLE, WA 98104-2684
Document Number	0000000422
Map Reference	VOL 1 PG 23
Instrument Date	Dec 12, 2022
Instrument	20221219000422
Transaction Type	Transfer
Record Updated	Dec 30, 2022

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name

December 2022: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	KING WA
Recording Date	Dec 14, 2022
Property Address	307 3RD AVE S, SEATTLE, WA 98104-2684
Document Number	0000000751
Map Reference	VOL 1 PG 23
Instrument Date	Dec 12, 2022
Instrument	20221214000751
Transaction Type	Transfer
Record Updated	Dec 23, 2022

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	Washington
County	King County
Municipality	Seattle City
Unified School District	Seattle Public Schools (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026	$50,242.00 (-10.78%)
2025		$4,900,000 (-17.7%) Land $3,238,200 Building $1,661,800	$4,900,000 (-17.7%) Land $3,238,200 Building $1,661,800
2024	$56,314.00 (+15.32%)	$5,953,800 (+1.85%) Land $3,238,200 Building $2,715,600	$5,953,800 (+1.85%) Land $3,238,200 Building $2,715,600
2022	$48,834.00	$5,845,800 Land $3,094,200 Building $2,751,600	$5,845,800 Land $3,094,200 Building $2,751,600

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

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

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

Wildfire Risk	Not rated no burnable land within ember reach

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 System	SEATTLE PUBLIC UTILITIES serves 1,161,961 people · EPA ID WA5377050
Water Source	Surface water
Last State Inspection	Jul 2025
Lead	2 ppb (2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 150 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable · Fiber in parts of the area	2,000 / 2,000
Astound Broadband Fiber · Cable	2,000 / 2,000
Verizon Fixed Wireless	1,000 / 75

May also be available: AT&T, CenturyLink, Google Fiber, T-Mobile.

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