1000 S FREMONT AVE
Office building — one story · Alhambra · 91803
At a glance
1000 S FREMONT AVE in Alhambra, CA is listed on the Los Angeles County property roll as “Office building — one story”, AIN 5342001021. The roll records 460,590 sq ft of building area, a 1943 build year and an assessed value of $174,156,174. 6 active business locations at this address appear in public records.
Public record — 6 matched business locations
Tenants & business locations
| Company | Suite / floor | Since | Source | Match |
|---|---|---|---|---|
| JOSE CASTELLON | — | Jan 2019 | LA business tax registry | address match · high |
| ESPERANZA CHARITIES, INC. | SUITE #1102 | Jan 2005 | LA business tax registry | address match · high |
| GRACETEL INC | 10115 | Jan 1997 | LA business tax registry | address match · high |
| USC RADIOLOGY ASSOCIATES INC | 7309 | Apr 1992 | LA business tax registry | address match · high |
| USC IMAGING ASSOCAITES INC | 7309 | Jun 1989 | LA business tax registry | address match · high |
| THE RATKOVICH COMPANY | UNIT #28 | Jun 1986 | LA business tax registry | address match · high |
Los Angeles County assessment roll
Parcel record
| Field | Value |
|---|---|
| AIN | 5342001021 |
| Site address | 1000 S FREMONT AVE |
| Land use (DOR) | 1706 — Office building — one story |
| Building area (actual) | 460,590 sq ft |
| Floors / units / buildings | — / — / 5 |
| Lot size | — |
| Year built | 1943 |
| Zoning (primary) | — |
| Land value | $55,753,642 |
| Building value | — |
| Total assessed value | $174,156,174 |
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
- 1000 S FREMONT AVE
- City
- Alhambra
- ZIP
- 91803
- Coordinates
- 34.08148, -118.15062
Within ~650 m
Nearby office buildings
- 900 S FREMONT AVE1 tenants
479,498 sq ft · 1970
- 2215 W MISSION RD0 tenants
48,784 sq ft · 1968
- 2145 W MISSION RD0 tenants
31,878 sq ft · 1988
- 2200 W VALLEY BLVD0 tenants
30,138 sq ft · 1946
- 2121 ORANGE ST0 tenants
17,908 sq ft · 1974
- Parcel 53420010250 tenants
12,470 sq ft
How does 1000 S FREMONT AVE compare with other Los Angeles office buildings?
At 460,590 sq ft, 1000 S FREMONT AVE is about 24 times the size of 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 $378 per square foot of building area, against $306 across all office floor area on the roll.
Does the owner of 1000 S FREMONT AVE 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 5342001021 as “Office Building” (use code 1706). 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 1000 S FREMONT AVE?
Los Angeles County's published roll does not include owner names, so no owner is shown.
What companies have offices at 1000 S FREMONT AVE?
6 active business locations at this building appear in Los Angeles County public records, including JOSE CASTELLON, ESPERANZA CHARITIES, INC., GRACETEL INC, USC RADIOLOGY ASSOCIATES INC, USC IMAGING ASSOCAITES INC. Public records under-count tenants that don't hold a local receipt or register the address.
How big is 1000 S FREMONT AVE?
The Los Angeles County roll records 460,590 sq ft of building area, a build year of 1943.
What is the assessed value of 1000 S FREMONT AVE?
$174,156,174 on the Los Angeles County roll. Assessed values are taxable-roll figures, not market prices.
What is the AIN for 1000 S FREMONT AVE?
AIN 5342001021, site address 1000 S FREMONT AVE, Alhambra. It is the key to look the parcel up in the County Assessor annual roll (Los Angeles County).
More around 1000 S FREMONT AVE
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.
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Dataset updated . Source: Los Angeles County assessment roll, AIN 5342001021.
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, “1000 S FREMONT AVE, Alhambra, CA (AIN 5342001021)”, https://buildingcensus.com/offices/la/office-building-acdf369f (data as of September 20, 2026).