4020 E MADISON ST
Office · Seattle · 98112
At a glance
4020 E MADISON ST in Seattle, WA is listed on the Seattle / King County property roll as “Office”, parcel (major-minor) 4385700325. The roll records 28,848 sq ft of building area, 3 floors, a 1982 build year and an assessed value of $3,998,200. 10 active business locations at this address appear in public records.
Public record — 10 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| MARTINEZ & FARMER LLP | # 300 | Mar 2025 | Seattle business licence | address · medium |
| ADAPT TO GROWTH THERAPY PLLC | — | Aug 2021 | Seattle business licence | address · medium |
| SARA K. LEVLEY PSYD | # 230 | Jun 2019 | Seattle business licence | address · medium |
| TIM SUNNY & CO | # STE 202 | Jun 2018 | Seattle business licence | address · medium |
| THE ROCKWELL GROUP LLC | # 326C | Aug 2015 | Seattle business licence | address · medium |
| CARLA CURIO LMHC EMMHS | # 240 | Jun 2013 | Seattle business licence | address · medium |
| J P MORGAN SECURITIES LLC | — | Jan 2013 | Seattle business licence | address · medium |
| J CARR LEARNING | # 335 | Jun 2012 | Seattle business licence | address · medium |
| Jp Morgan Chase Bank Navia JP MORGAN CHASE BANK NA | — | Jan 2009 | Seattle business licence | address · medium |
| SEBCO INC | # 320 | Mar 1965 | Seattle business licence | address · medium |
Seattle / King County assessment roll
Parcel record
| Field | Value |
|---|---|
| parcel (major-minor) | 4385700325 |
| Site address | 4020 E MADISON ST |
| Land use (DOR) | — Office |
| Building area (actual) | 28,848 sq ft |
| Floors / units / buildings | 3 / — / 1 |
| Lot size | — |
| Year built | 1982 |
| Zoning (primary) | — |
| Land value | $2,360,000 |
| Building value | — |
| Total assessed value | $3,998,200 |
Recorded owner (assessment roll)
No owning organisation shown. Where the county roll names a private individual, the name and mailing address are not published here.
Location
- Address
- 4020 E MADISON ST
- City
- Seattle
- ZIP
- 98112
Within ~650 m
Nearby office buildings
No other office parcels within ~650 m.
How does 4020 E MADISON ST compare with other Seattle office buildings?
At 28,848 sq ft, 4020 E MADISON ST is about 38% smaller than the average office building on the Seattle / King County roll, which comes to 46,649 sq ft across 4,289 buildings.
Its assessed value works out to $139 per square foot of building area, against $230 across all office floor area on the roll.
Does the owner of 4020 E MADISON ST hold other Seattle office property?
Seattle / King County's published roll does not include owner names, so no owner is shown for any parcel in this metro.
What does “Office” mean for this parcel?
The Seattle / King County roll classifies parcel (major-minor) 4385700325 as “Office”. BuildingCensus includes a parcel in its office census when the roll gives it an office-class use, so the label is the county's, not an inference.
Frequently asked questions
Who owns 4020 E MADISON ST?
Seattle / King County's published roll does not include owner names, so no owner is shown.
What companies have offices at 4020 E MADISON ST?
10 active business locations at this building appear in Seattle / King County public records, including MARTINEZ & FARMER LLP, ADAPT TO GROWTH THERAPY PLLC, SARA K. LEVLEY PSYD, TIM SUNNY & CO, THE ROCKWELL GROUP LLC. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 4020 E MADISON ST?
The Seattle / King County roll records 28,848 sq ft of building area, 3 floors, a build year of 1982.
What is the assessed value of 4020 E MADISON ST?
$3,998,200 on the Seattle / King County roll. Assessed values are taxable-roll figures, not market prices.
What is the parcel (major-minor) for 4020 E MADISON ST?
Parcel (major-minor) 4385700325, site address 4020 E MADISON ST, Seattle. It is the key to look the parcel up in the King County Assessor bulk extracts and Seattle open data (Seattle / King County).
More around 4020 E MADISON ST
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Seattle / King County — King County Assessor bulk extracts and Seattle open data. Washington law restricts commercial use of lists of individuals, so this metro is built without personal names by design: the county's name-stripped account file provides mailing addresses (portfolios group by mailing cluster, unnamed), sales show price and date but never buyer or seller, and tenants are business licence trade names.
Every fact on this page is drawn from the government records above — no listing sites, no scraped platforms, no third-party images. Facts from public records are uncopyrightable; each tenancy row carries its source and match confidence. Records can lag reality — a business-tax receipt or registration at an address is evidence of occupancy, not a lease confirmation.
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Dataset updated . Source: Seattle / King County assessment roll, parcel (major-minor) 4385700325.
About this data
Source: King County Assessor bulk extracts and Seattle open data (Seattle / King County), as published September 20, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “4020 E MADISON ST, Seattle, WA (parcel (major-minor) 4385700325)”, https://buildingcensus.com/offices/seattle/office-building-2e93d702 (data as of September 20, 2026).