510 S GRAND AVE
Office building — one story · Glendora · 91741
At a glance
510 S GRAND AVE in Glendora, CA is listed on the Los Angeles County property roll as “Office building — one story”, AIN 8639028013. The roll records 24,781 sq ft of building area, a 1980 build year and an assessed value of $5,973,599.
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 | 8639028013 |
| Site address | 510 S GRAND AVE |
| Land use (DOR) | 1700 — Office building — one story |
| Building area (actual) | 24,781 sq ft |
| Floors / units / buildings | — / — / 2 |
| Lot size | — |
| Year built | 1980 |
| Zoning (primary) | — |
| Land value | $3,584,160 |
| Building value | — |
| Total assessed value | $5,973,599 |
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
- 510 S GRAND AVE
- City
- Glendora
- ZIP
- 91741
- Coordinates
- 34.13020, -117.87198
Within ~650 m
Nearby office buildings
- 725 S GRAND AVE1 tenants
108,016 sq ft · 1967
- 210 S GRAND AVE1 tenants
49,920 sq ft · 1967
- 412 W CARROLL AVE0 tenants
30,224 sq ft · 1952
- 552 W FOOTHILL BLVD0 tenants
15,128 sq ft · 2018
- 415 W ROUTE 660 tenants
13,971 sq ft · 1994
- 415 W CARROLL AVE0 tenants
12,000 sq ft · 1977
How does 510 S GRAND AVE compare with other Los Angeles office buildings?
At 24,781 sq ft, 510 S GRAND AVE is about 29% larger 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 $241 per square foot of building area, against $306 across all office floor area on the roll.
Does the owner of 510 S GRAND 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 8639028013 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 510 S GRAND AVE?
Los Angeles County's published roll does not include owner names, so no owner is shown.
What companies have offices at 510 S GRAND AVE?
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 510 S GRAND AVE?
The Los Angeles County roll records 24,781 sq ft of building area, a build year of 1980.
What is the assessed value of 510 S GRAND AVE?
$5,973,599 on the Los Angeles County roll. Assessed values are taxable-roll figures, not market prices.
What is the AIN for 510 S GRAND AVE?
AIN 8639028013, site address 510 S GRAND AVE, Glendora. It is the key to look the parcel up in the County Assessor annual roll (Los Angeles County).
More around 510 S GRAND 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 8639028013.
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, “510 S GRAND AVE, Glendora, CA (AIN 8639028013)”, https://buildingcensus.com/offices/la/office-building-851709b5 (data as of September 20, 2026).