Every property owner search ends at a county office. Most people know that much. What stops them is that the United States has 3,069 counties, and every one runs its own website, names its offices its own way, and puts the search box somewhere different (NACo). The King County tool works nothing like the Pierce County tool twenty miles south of it. Same state, same records, different door.
A property owner search by county means pulling the owner of record and the tax-billing mailing address from the county's own records: the assessor for the current owner, the recorder for the deed history. Every county keeps these records, almost all of them are free to search, and the search takes about two minutes. The only real work is finding your county's door.
That door-finding layer is this page. The full identification method once you are inside a record, the mailing-address trap, LLC owners, when a paid skip trace earns its fee, lives in how to find out who owns a property. The rest of the records world, permits, liens, and court filings, is covered in the public records guide for real estate. Here I am only solving the problem that stalls people: which office, which portal, what the search takes, using the three Puget Sound counties I pull records from every week as worked examples.
One county, three doors
County government splits property records across three offices. Ask the wrong office and you get a shrug, so learn what each door holds before you knock.
| County office | What it holds | The question it answers |
|---|---|---|
| Assessor | Parcel records: owner of record, tax-billing mailing address, assessed value, property characteristics | Who owns it right now, and where does their mail go? |
| Recorder (the auditor in Washington) | Recorded documents: deeds, mortgages, liens, notices of trustee sale | How did they come to own it, and what is filed against it? |
| Treasurer | Tax billing and payment status | Are the property taxes current? |
The assessor is the right first door for nearly every ownership question, which is why the pattern below starts there. The other two doors matter for specific hunts. The treasurer's delinquency roll is its own lead source, covered in how to pull a tax delinquent property list. The recorder is where pre-foreclosure activity surfaces first, since a notice of trustee sale is a recorded document; that workflow is in how to find pre-foreclosures.
In Washington, none of this access is a courtesy. RCW 42.56.070 requires every agency to make its public records available for inspection and copying, and most states have an equivalent statute. A county gets to choose how clunky its portal is. The record behind it stays public either way.
The four-step pattern that works in any county
Portals differ. The pattern underneath them holds everywhere. I have run it across dozens of Washington, Oregon, and Idaho counties while scoping data sources for FlaggedLeads, and it has not failed me yet.
Step 1: Find the assessor's search. Type "[county name] assessor parcel search" into a search engine and open the county government result. Usually that is a .gov domain. Sometimes the county hosts its official tool on a vendor domain instead; you confirm those by finding the link on the county's own site. Skip the lookalike aggregator sites that buy ads above the county result. They resell the same record the county gives away.
Step 2: Search by address or parcel number. Nearly every county portal takes both. Owner-name search is the feature that varies, so do not count on it. Starting from a bare address is the majority case, and the full reverse workflow is in how to look up a property owner by address.
Step 3: Read the owner of record and the mailing address. Two fields. The owner of record is the name on title as the assessor knows it. The mailing address is where the tax bill goes, which makes it the address that reaches the owner even when the house sits empty. When the two addresses differ, you are looking at an absentee owner. Across the seven Puget Sound markets we track, the county mailing address is populated on 98.5% of roughly 296,000 parcels, which is why I treat it as the single most reliable contact field in public records.
Step 4: Go to the recorder when the assessor is stale. Assessor rolls lag reality. After a recent sale, a death, or a transfer into an LLC or trust, the name on the parcel record can be months behind. The recorder's index updates when the deed is filed, so pull the most recent deed and read the exact names and the date. In Washington the recorder's duties belong to the county auditor, which trips up everyone who moves here from a state with a Recorder of Deeds.
That is the whole pattern. Everything below is the pattern applied to real counties.
The Puget Sound directory: King, Pierce, Snohomish
I opened each of these portals today, August 5, 2026. Every link resolves, and the quirks listed are the ones that cost people time on a first visit.
| County | Owner-search portal | What the search takes | The quirk |
|---|---|---|---|
| King County, WA | eReal Property, Dept. of Assessments | Address or parcel number | No owner-name search. Interface is dated and fine. Seattle, Bellevue, Burien, and Shoreline parcels all live here |
| Pierce County, WA | ATIP, the Assessor-Treasurer Information Portal | Address, parcel number, or owner name | The rare portal with a real name search. Tacoma and unincorporated Pierce County are both in here |
| Snohomish County, WA | Property Search, via the county site | Street address or 14-digit parcel number | Official tool lives on a vendor domain (publicaccessnow.com) that reads as unofficial. No name search, and the address format is picky |
King County: eReal Property
King County's Department of Assessments runs eReal Property, and it is the definition of a government tool that has outlived every redesign trend: plain, fast, and complete. Search by address or by the tax parcel number and you get the parcel record, taxpayer name, mailing address, assessed value history, and sales. What it will not do is search by owner name. You come in through the property, not the person. For the deed trail, King County's recorded documents live in the Official Records Search, where you can search grantor and grantee names back through decades of transfers. Between those two tools, every Seattle, Bellevue, Burien, and Shoreline parcel I work resolves to an owner and a mailing address.
Pierce County: ATIP
Pierce County consolidated its assessor and treasurer into one office, so one portal, the Assessor-Treasurer Information Portal, answers both the ownership question and the tax question. It takes an address, a parcel number, or an owner name, and the name search is the sleeper feature: type a person's name and see every parcel they hold in the county. When a Tacoma lead turns out to own four other properties, that changes the conversation you are about to have. Recorded documents sit with the Pierce County Auditor's search, and heed the county's own warning that documents linked to a parcel number are incomplete there. Search deeds by grantor and grantee name and you get the full trail.
Snohomish County: Property Search
Snohomish County's parcel search hides behind the least official-looking URL of the three. The county site's Property Information page redirects to a Property Search tool hosted at wa-snohomish.publicaccessnow.com, a vendor domain that has made more than one person ask me whether it is legit. It is; the county just outsources the hosting. The tool takes a street address or a parcel number (14 digits for real property), and the address parser is strict: "123 MAIN ST" works, and so does the wildcard "123*", but creative formatting returns nothing. No owner-name search here either. The county also runs SCOPI, an interactive map that shows the owner when you click a parcel, and that whole world of county GIS parcel maps has its own writeup.
These three counties are also where our violation data lives, so I can put honest numbers on what flows through these portals. Across the seven Puget Sound markets FlaggedLeads tracks, Pierce County carries 45,677 code violations on 23,937 properties, our King County cities (Seattle, Bellevue, Burien, Shoreline) carry 40,005 on 23,702, and our one Snohomish County market so far, Mountlake Terrace, carries 346 on 300 (FlaggedLeads database, August 2026). Every one of those cases resolves to an owner through the same county records behind the doors above. Our pipeline just does it in bulk, from the parcel rolls the counties publish.
Finding any other county's door
Outside my three counties the directory changes, but the recipe holds.
Run the door-finding search. "[county name] assessor parcel search" finds the right portal in almost every county. If the county calls its office something else (property appraiser in Florida, for instance), "[county name] property search" catches it. Scroll past the ads to the government result.
Confirm the county before you search it. This is the mistake I see most. City limits and county lines do not match, and ZIP codes ignore both. Bothell splits between King and Snohomish counties. Auburn splits between King and Pierce. A parcel sits in exactly one county, and searching the wrong one returns nothing, which reads like "no record exists" when the record is one county over. When you do not know the county at all, NACo's County Explorer resolves any place in the country to its county.
Unincorporated addresses are county-only. No city hall holds records for an unincorporated area, so the county is the only door there is. Unincorporated Pierce County alone accounts for 22,533 of the 45,677 violations we track in that county, and every ownership lookup for those runs through ATIP.
When the portal fails, fall back on the statute. A few small counties still keep thin websites. The record is still public. A records request to the assessor's office, citing your state's public records law, gets you the parcel record by email, usually inside a week.
Where the county search runs out
The county gives you a name and a mailing address. That solves mail outreach on the spot, and mail is where I would start. It does not solve three problems. When the owner of record is an entity, you unwrap it with the Secretary of State, walked through in finding the person behind an LLC-owned property. When you need a phone number instead of a mailbox, that is a paid append, covered in skip tracing a list by address. And when you are working leads at volume, one parcel at a time stops scaling around lookup number thirty.
That last problem is the one I built around. The free FlaggedLeads map starts from the distress side, code violations across our Puget Sound markets, and the paid tier cross-references each case with the county ownership record for you, including the mailing address, for Seattle, Bellevue, Tacoma, Burien, and Pierce County. The county portals are still where I send anyone working a single property. They are free, they are current, and now you know which door is yours.
Frequently asked questions
How do I find out who owns a property in my county?
Search the web for your county's name plus "assessor parcel search," open the county government result, and search the property address. The parcel record shows the owner of record and the tax-billing mailing address, free in nearly every US county.
Are county property owner searches free?
Searching is free in almost every county. The assessor's parcel record, including the owner name and mailing address, costs nothing to view online. Counties only charge for copies of recorded documents, usually a few dollars per deed, and for certified copies.
Can I search county property records by owner name?
It depends on the county, and it is the feature that varies most. Pierce County's ATIP portal searches by owner name; King County's eReal Property and Snohomish County's Property Search do not. Where the assessor portal lacks a name search, the county recorder's grantor-grantee index usually covers it.
What is the difference between the county assessor and the county recorder?
The assessor maintains the current parcel record for taxation: owner of record, mailing address, assessed value. The recorder (the auditor in Washington) archives the documents themselves: deeds, mortgages, liens. Use the assessor for who owns it now, the recorder for how ownership changed and what is filed against it.
Which county do I search when a city sits in two counties?
Search the county the parcel sits in, because each county only holds its own parcels. Cities like Bothell (King and Snohomish) and Auburn (King and Pierce) split across county lines. If an address returns nothing in one county's portal, run it in the neighboring county before concluding there is no record.