BW-BONDED · Granite Bay, California
Twin Rocks Estate Vineyards and Winery INC
Doing business as Twin Rocks Estate Winery. Federal alcohol Basic Permit on file with the TTB.
- BW-BONDED
- TTB plate
- Active
- Status
- MEGA-BOOK
- California book
- PAIR-CITY
- Granite Bay crowd
The record
Twin Rocks Estate Vineyards and Winery INC holds an active federal Winery Basic Permit (CA-W-23487), with premises in Granite Bay, California.
- CA-W-23487
- federal permit number
- BW-BONDED
- TTB class plate
- MEGA-BOOK
- California winery book
- PAIR-CITY
- wineries crowd in Granite Bay
Source: TTB FOIA List of Permittees, September 2026.
- BW-BONDED
- MEGA-BOOK
- PAIR-CITY
- STATE-#1
Not legal advice · see methodology.
Permit & location
| Permit class | Winery |
|---|---|
| Status | Active |
| Federal permit no. | CA-W-23487 |
| Operating name (DBA) | Twin Rocks Estate Winery |
| City | Granite Bay |
| County | Placer |
| ZIP code | 95746 |
| State | California |
| Federal regulator | Alcohol and Tobacco Tax and Trade Bureau (TTB) |
How Twin Rocks Estate Vineyards and Winery INC fits in California
6,400
winery permits in California · MEGA-BOOK
#1
of 52 states for wineries
21,002
all permits in California · MEGA-BOOK
California registers 6,400 bonded wineries (35.3% of the 18,120 U.S. winery class), ranked #1 among states. Twin Rocks Estate Vineyards and Winery INC in Granite Bay is one holder in that book; 21,002 total FAA permits sit in California across all four classes.
California's winery book vs every state
Where California's 6,400 active wineries rank among all states, the cohort Twin Rocks Estate Vineyards belongs to
6,400 1st of 52 the highest of 52 states
States, banded by winery permit count
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source TTB FOIA List of Permittees, aggregated by state · September 2026
Read with Twin Rocks Estate Vineyards
ABS(winery_count) peers first (same permit class, other states), then a LARGEST-distance pole and a class-branched guide, not a fixed Related strip.
14 Acres Vineyard & Winery, LLC · Washington →
BW-BONDED · DENSE-BOOK
ABS(winery_count) peer: Washington 1,430 wineries (Δ 4,970 lighter vs California).
12 Fires Winery & Vineyard, LLC · Texas →
BW-BONDED · DENSE-BOOK
ABS(winery_count) peer: Texas 1,013 wineries (Δ 5,387 lighter vs California).
12 Ranch Wines, INC. · Oregon →
BW-BONDED · DENSE-BOOK
ABS(winery_count) peer: Oregon 995 wineries (Δ 5,405 lighter vs California).
Anxo · District of Columbia →
BW-BONDED · TRACE-BOOK · POLE
LARGEST-distance ABS(winery_count) pole: District of Columbia holds 11 wineries (Δ 6,389 vs California's MEGA-BOOK).
California permit board · MEGA-BOOK →
BW-BONDED · MEGA-BOOK
Twin Rocks Estate Vineyards sits in California's MEGA-BOOK winery book (6,400 active) - open the state board after the ABS peers.
Wine industry by state · BW-BONDED →
BW-BONDED · PAIR-CITY
Twin Rocks Estate Vineyards's BW-BONDED plate is a Bonded Winery record, read how state wine books diverge before comparing peers.
Other wineries near Granite Bay
All permit holders in Granite Bay →Nationwide wineries in similarly dense permit cities
Nationwide wineries outside California with comparable city books — Twin Rocks Estate Vineyards's winery plate is compared on permit-holder density, not production volume.
Similar city permit density
Nearest cross-state wineries by city permit-holder count (8 holders in Granite Bay).
Similar city winery count
Nearest cross-state wineries by city winery count (4 here).
Frequently asked questions
What permit does Twin Rocks Estate Vineyards and Winery INC hold?
Twin Rocks Estate Vineyards and Winery INC holds an active federal Winery Basic Permit issued by the U.S. Alcohol and Tobacco Tax and Trade Bureau (TTB), permit number CA-W-23487. Bonded Winery permits authorize production or blending under federal bond (18,120 nationwide).
Where is Twin Rocks Estate Vineyards and Winery INC located?
Twin Rocks Estate Vineyards and Winery INC's permit premises is in Granite Bay, California (Placer County), ZIP 95746. California holds 6,400 winery permits - the 1st most of any state.
How should I verify Twin Rocks Estate Vineyards and Winery INC's permit?
Cross-check permit number CA-W-23487 against the TTB Public Permit Search and confirm the winery class matches your use case. This page reflects the September 2026 FOIA List of Permittees extract; status can change between vintages.
Reading a mega book winery plate
Twin Rocks Estate Vineyards and Winery INC's BW-BONDED plate sits in California's MEGA-BOOK winery book (6,400 active, state #1 nationally). A Bonded Winery permit covers production and blending under federal bond; it does not authorize retail sale to consumers and is not a state ABC license.