Tower 1210500 — Concord, CA
CanceledFCC Antenna Structure Registration 1210500 — tower (type not specified) near Concord, 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 1210500 is a 30 m (99 ft) tower near Concord, Contra Costa County, California. Its registration status is canceled. It is registered to Seren Innovations, Inc.
Registration record
FCC record
| Field | Value |
|---|---|
| Registration number (ASRN) | 1210500 |
| Unique system identifier | 2607597 |
| Status | Canceled (A) |
| Structure type | Tower (type not specified) (TOWER) |
| Date constructed | — |
| Registration issued | Aug 30, 2000 |
Aviation safety
FAA & lighting
| Field | Value |
|---|---|
| FAA study number | 99-AWP-2410-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
Seren Innovations, Inc.
Minneapolis, MN · FRN 0006149215
Location
- Address
- 220 MASON CIRCLE
- City
- Concord
- State
- California
- ZIP
- 94520
- County
- Contra Costa County
- County FIPS
- 06013
- Coordinates
- 38.00778, -122.04028
Within ~40 km
Nearby structures
Building with antenna · Constructed
Tower (type not specified) · Granted (not yet constructed)
Tower (type not specified) · Granted (not yet constructed)
Tower (type not specified) · Granted (not yet constructed)
Tower (type not specified) · Granted (not yet constructed)
Building with antenna · Granted (not yet constructed)
How tall is structure 1210500 compared with others?
At 30 m, structure 1210500 is roughly in line with the 28 m average across the 216 structures registered in Contra Costa County. It is roughly in line with the California average of 32 m across 11,860 registrations. Among the 75,247 registrations nationwide filed under the same structure-type code (TOWER), the average overall height is 76 m, so this one is about 40% of that figure.
The site's filed ground elevation is 3 m, which puts the top of the structure 33 m above mean sea level.
Where is structure 1210500, and what is registered around it?
The registration places the structure near Concord in Contra Costa County, California, at coordinates 38.00778, -122.04028, with the site address filed as "220 MASON CIRCLE". 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 11,860 registrations, the 2nd-largest total among the 50 states and DC.
The tallest other registered structure within about 40 km is San Francisco, CA · 1205157, a building antenna at 250 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 1210500 on Aug 30, 2000. Nationally, 15,896 of the 197,770 registrations (8%) carry the canceled status, including 1,309 in California.
Who owns antenna structure 1210500?
The FCC record lists Seren Innovations, Inc. of Minneapolis, MN as the registered owner, under FCC Registration Number 0006149215.
What FAA and lighting details are on file?
The registration cites FAA aeronautical study 99-AWP-2410-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 1210500?
Its registered overall height above ground is 30 m (99 ft), and 33 m (109 ft) above mean sea level.
Who owns tower 1210500?
The registered owner is Seren Innovations, Inc..
Where is antenna structure 1210500?
It is located near Concord, Contra Costa County, California at 220 MASON CIRCLE (38.00778, -122.04028). Its status is canceled.
What type of structure is 1210500?
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. 75,247 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 1210500, weekly bulk file.
About this data
Source: FCC Antenna Structure Registration (ASR) database, as published October 13, 2026 — TowerCensus refreshes it weekly. See the methodology for how records are matched, cleaned and scored.
Cite as: TowerCensus, “Antenna structure 1210500, Concord, Contra Costa County, California”, https://towercensus.com/towers/california/concord-1210500 (data as of October 13, 2026).