Promise Winery Use Permit (File No. P22-00384), Variance (File No. P25-00283), and Exception to Road and Street Standards
2 Documents in Project
Summary
SCH Number
2025120435
Lead Agency
Napa County
Document Title
Promise Winery Use Permit (File No. P22-00384), Variance (File No. P25-00283), and Exception to Road and Street Standards
Document Type
NOD - Notice of Determination
Received
Posted
5/4/2026
Document Description
Request for a Use Permit to convert and expand an existing barn to a 2,794 sq. ft. winery, convert a 1,268 sq. ft. accessory dwelling unit to a tasting room, and to construct a 5,000 sq. ft. production cave, a 1,235 sq. ft. covered crush pad, a 1,040 sq. ft. mechanical enclosure, and a 900 sq. ft. unenclosed covered parking structure with an ADA restroom. The request includes a Variance to allow use of existing buildings and new buildings within Napa County winery road setbacks. Parking improvements include seven standard and two accessible spaces. Driveway improvements include widening and installation of intervisible turnouts along sub-standard segments of the road in areas outside of stream setbacks, as well as signage and management of vegetation to maintain line of sight. Two outdoor patios will be used for outdoor seating and onsite consumption of wine (Business & Professions Code §23358, 23390 and 23396.5). The winery would be constructed in two phases: Phase I includes the tasting room, winery barn, three employees, and production of 5,000 gallons per year; Phase II increases production to 30,000 gallons per year, five employees, and cave and crush pad construction. The project includes daily visitation, tours and tasting, and a marketing program with seven events.
Contact Information
Name
Hannah Spencer
Agency Name
Napa County
Job Title
Planner III
Contact Types
Lead/Public Agency
Phone
Name
Steve McPherson
Agency Name
Promise Wine
Job Title
Property Owner
Contact Types
Project Applicant
Phone
Email
Location
Coordinates
Cities
Unincorporated St.Helena
Counties
Napa
Regions
San Francisco Bay Area, Unincorporated
Cross Streets
Chiles Pope Valley Road; State Route 128
Zip
94574
Total Acres
62.56
Jobs
5
Parcel #
032-520-009
State Highways
128
Railways
NA
Airports
NA
Schools
NA
Waterways
Sage Creek, Moore Creek, Clear Creek
Township
07N
Range
04W
Section
5
Base
MDM
Other Location Info
2004 Sage Canyon Rd, St. Helena, CA 94574
Notice of Determination
Approving Agency
Napa County Planning Commission
Approving Agency Role
Lead Agency
Approved On
County Clerk
Napa
Final Environmental Document Available at
www.napacounty.gov
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
Yes
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
Yes
Attachments
Notice of Determination
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