101 W WALNUT ST
Office building — one story · Pasadena · 91103
At a glance
101 W WALNUT ST in Pasadena, CA is listed on the Los Angeles County property roll as “Office building — one story”, AIN 5713009034. The roll records 15,896 sq ft of building area, a 1975 build year and an assessed value of $5,381,750.
Public record — 0 matched business locations
Tenants & business locations
No active business locations at this address appear in the public records ingested so far. That is a statement about the records, not the building: tenants without a county business-tax receipt or a Florida registration at this address are invisible to public data.
Los Angeles County assessment roll
Parcel record
| Field | Value |
|---|---|
| AIN | 5713009034 |
| Site address | 101 W WALNUT ST |
| Land use (DOR) | 1700 — Office building — one story |
| Building area (actual) | 15,896 sq ft |
| Floors / units / buildings | — / — / 1 |
| Lot size | — |
| Year built | 1975 |
| Zoning (primary) | — |
| Land value | $1,591,902 |
| Building value | — |
| Total assessed value | $5,381,750 |
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
- 101 W WALNUT ST
- City
- Pasadena
- ZIP
- 91103
- Coordinates
- 34.14992, -118.15274
Within ~650 m
Nearby office buildings
- 75 N FAIR OAKS AVE0 tenants
494,902 sq ft · 1977
- 100 W WALNUT ST6 tenants
415,699 sq ft · 1974
- 177 E COLORADO BLVD7 tenants
295,284 sq ft · 1970
- 117 E COLORADO BLVD5 tenants
94,820 sq ft · 1905
- 350 W COLORADO BLVD0 tenants
88,304 sq ft · 1984
- 100 CORSON ST0 tenants
80,273 sq ft · 1987
How does 101 W WALNUT ST compare with other Los Angeles office buildings?
At 15,896 sq ft, 101 W WALNUT ST is about 17% smaller than the average office building on the Los Angeles County roll, which comes to 19,230 sq ft across 19,626 buildings.
Its assessed value works out to $339 per square foot of building area, against $306 across all office floor area on the roll.
Does the owner of 101 W WALNUT ST hold other Los Angeles office property?
Los Angeles County's published roll does not include owner names, so no owner is shown for any parcel in this metro.
What does “Office Building” mean for this parcel?
The Los Angeles County roll classifies AIN 5713009034 as “Office Building” (use code 1700). 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 101 W WALNUT ST?
Los Angeles County's published roll does not include owner names, so no owner is shown.
What companies have offices at 101 W WALNUT ST?
No business locations at this building appear in the public records ingested so far — no licence, tax or registry record currently lists this address; that is a gap in the record, not proof the building is empty.
How big is 101 W WALNUT ST?
The Los Angeles County roll records 15,896 sq ft of building area, a build year of 1975.
What is the assessed value of 101 W WALNUT ST?
$5,381,750 on the Los Angeles County roll. Assessed values are taxable-roll figures, not market prices.
What is the AIN for 101 W WALNUT ST?
AIN 5713009034, site address 101 W WALNUT ST, Pasadena. It is the key to look the parcel up in the County Assessor annual roll (Los Angeles County).
More around 101 W WALNUT ST
Everything here comes from public records, and public records go stale. If you know better, say so.
Data provenance — public records only
- Los Angeles County — County Assessor annual roll (use codes, areas, values; California law redacts owner names from bulk data) and the city Office of Finance active-business registry, whose addresses carry floor and suite numbers.
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.
Working with Los Angeles office parcels? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
Dataset updated . Source: Los Angeles County assessment roll, AIN 5713009034.
About this data
Source: County Assessor annual roll (Los Angeles County), as published September 20, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “101 W WALNUT ST, Pasadena, CA (AIN 5713009034)”, https://buildingcensus.com/offices/la/office-building-bdd188e7 (data as of September 20, 2026).