Tower 1000021 — San Francisco, CA
CanceledFCC Antenna Structure Registration 1000021 — tower (type not specified) near San Francisco, California. Filed under the FCC's older general tower code, which does not record whether the tower is guyed, lattice or a monopole.
At a glance
FCC Antenna Structure Registration 1000021 is a 27 m (90 ft) tower near San Francisco, Contra Costa County, California. Its registration status is canceled. It is registered to LA RUE, KNOX, which holds 218 FCC structure registrations.
Registration record
FCC record
| Field | Value |
|---|---|
| Registration number (ASRN) | 1000021 |
| Unique system identifier | 106798 |
| Status | Canceled (A) |
| Structure type | Tower (type not specified) (TOWER) |
| Date constructed | — |
| Registration issued | Apr 17, 2000 |
Aviation safety
FAA & lighting
| Field | Value |
|---|---|
| FAA study number | 96-AWP-1085-OE |
| FAA circular | — |
| Painting / lighting spec | NONE |
| Marking / lighting code | None (1) |
The painting/lighting specification is copied as filed: the FAA marking and lighting chapters and paragraphs cited in the ASR record. The marking/lighting code is decoded using the FCC registration form's code list.
Registered owner
Stockton, CA · FRN 0003579380
Holds 218 FCC structure registrations — view the full portfolio →
Location
- Address
- MOUNT DIABLO NORTH PEAK
- City
- San Francisco
- State
- California
- ZIP
- 94517
- County
- Contra Costa County
- County FIPS
- 06013
- Coordinates
- 37.89278, -121.90083
Within ~40 km
Nearby structures
Guyed tower · Constructed
Tower (type not specified) · Constructed
Guyed tower · Granted (not yet constructed)
Tower (type not specified) · Granted (not yet constructed)
Unspecified structure · Constructed
Tower (type not specified) · Canceled
How tall is structure 1000021 compared with others?
At 27 m, structure 1000021 is roughly in line with the 28 m average across the 216 structures registered in Contra Costa County. It is about 15% below the California average of 32 m across 11,862 registrations. Among the 75,198 registrations nationwide filed under the same structure-type code (TOWER), the average overall height is 76 m, so this one is about 36% of that figure.
The site's filed ground elevation is 1,081 m, which puts the top of the structure 1,109 m above mean sea level.
Where is structure 1000021, and what is registered around it?
The registration places the structure near San Francisco in Contra Costa County, California, at coordinates 37.89278, -121.90083, with the site address filed as "MOUNT DIABLO NORTH PEAK". Contra Costa County has 216 FCC-registered antenna structures, the 14th-largest count among the 58 California counties with registrations, and 116 of them are marked constructed. California as a whole has 11,862 registrations, the 2nd-largest total among the 50 states and DC.
The tallest other registered structure within about 40 km is Walnut Grove, CA · 1011404, a guyed tower at 625 m (constructed).
What does the status "Canceled" mean?
Canceled means the registration is no longer active in the FCC registry; the record is kept here as part of the registry's history. The FCC issued registration 1000021 on Apr 17, 2000. Nationally, 15,900 of the 197,833 registrations (8%) carry the canceled status, including 1,309 in California.
Who owns antenna structure 1000021?
The FCC record lists LA RUE, KNOX of Stockton, CA as the registered owner, under FCC Registration Number 0003579380. Across the registry it holds 218 structure registrations, the 103rd-largest portfolio among the 7,865 owners with two or more, including 218 in California. Its most common filed structure-type code is POLE (108 registrations).
What FAA and lighting details are on file?
The registration cites FAA aeronautical study 96-AWP-1085-OE, the FAA review of the structure's effect on air navigation. Its marking and lighting code, 1, is listed on the FCC registration form as "None".
Frequently asked questions
How tall is antenna structure 1000021?
Its registered overall height above ground is 27 m (90 ft), and 1,109 m (3,638 ft) above mean sea level.
Who owns tower 1000021?
The registered owner is LA RUE, KNOX, which holds 218 FCC antenna structure registrations.
Where is antenna structure 1000021?
It is located near San Francisco, Contra Costa County, California at MOUNT DIABLO NORTH PEAK (37.89278, -121.90083). Its status is canceled.
What type of structure is 1000021?
It is filed with the FCC under structure-type code TOWER, which decodes to "Tower (type not specified)". Filed under the FCC's older general tower code, which does not record whether the tower is guyed, lattice or a monopole. 75,198 registrations nationwide use the same code.
How many antenna structures are registered in Contra Costa County, CA?
Contra Costa County has 216 FCC-registered antenna structures, 116 of them constructed — the 14th-largest count among 58 counties in California.
Related pages
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Dataset updated . Source: FCC Antenna Structure Registration 1000021, weekly bulk file.
About this data
Source: FCC Antenna Structure Registration (ASR) database, as published October 20, 2026 — TowerCensus refreshes it weekly. See the methodology for how records are matched, cleaned and scored.
Cite as: TowerCensus, “Antenna structure 1000021, San Francisco, Contra Costa County, California”, https://towercensus.com/towers/california/san-francisco-1000021 (data as of October 20, 2026).