Hoffman Lane Replacement Residence
Summary
SCH Number
2026070002
Public Agency
Napa County
Document Title
Hoffman Lane Replacement Residence
Document Type
NOE - Notice of Exemption
Received
Posted
7/1/2026
Document Description
The project propose to grade and disturb approximately 1.4 acres of a 3.05-acre parcel zoned Agricultural Preserve (AP) to prepare for the following site improvements: a replacement Single Family Dwelling; a new Accessory Dwelling Unit; other new residential accessory uses including a tennis court, pool, patios, terraced rock wall modifications, water storage tanks, domestic septic system, etc.; a replacement Barn; and a new secondary driveway approximately 220-feet in length, as approved by Napa County PBES Director, on June 15, 2026.
Contact Information
Name
Hannah Spencer
Agency Name
Napa County (Planning, Building and Environmental Services)
Job Title
Planner III
Contact Types
Lead/Public Agency
Phone
Name
Eric Nyhus
Agency Name
Nyhus Design Group
Job Title
Architect
Contact Types
Project Applicant
Phone
Email
Location
Coordinates
Cities
Yountville
Counties
Napa
Regions
San Francisco Bay Area, Unincorporated
Cross Streets
Hoffman Lane and St. Helena Highway
Zip
94558
Total Acres
3.05
Parcel #
034-160-026
State Highways
29
Railways
Napa Valley Wine Train
Airports
NA
Schools
NA
Waterways
Hopper Creek, Napa River, Dry Creek
Township
06N
Range
05W
Section
12
Base
MDM
Other Location Info
2149 Hoffman Lane, Napa, CA 94558; approximately 0.4 miles west of the Hoffman
Lane and St. Helena Highway intersection
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Class 4; California Code of Regulations, title 14, sections 15304(a) and 15302
Reasons for Exemption
The project proposes 5,120 cubic yards of gross grading and 1.4 acres of disturbance to build a replacement home, accessory structures, and infrastructure. Specifically, grading is limited to gentle slopes of 2% to 8% and will not occur on any slopes over 10%. Furthermore, the property contains no streams or sensitive habitats. To prevent runoff, sediment, and pollutants from leaving the site, the project includes site-specific erosion control measures that follow the Napa Countywide Stormwater Pollution Prevention Program; as a result, the project will not cause discharge or concentrated runoff within stream setbacks. In addition, these minor alterations will not remove any healthy, mature, or scenic trees, nor is the project site located within a mapped severe geologic hazard area.
Regarding the project's scope, it will replace a single-family home, garage, and barn in the same general location as the original buildings. The new structures will serve the same purpose and capacity with negligible expansion because the primary use of the property remains a single-family residence. According to the Napa County GIS Map Biological and California Natural Diversity Database (CNDDB) layers, the project site does not contain any known sensitive habitats and sits outside the range of any documented special-status species. This is because most construction will occur on land previously disturbed by residential and agricultural uses. As a result, while the project adds to local development, its modest single-family nature will not cause significant cumulative impacts.
Regarding existing site conditions, the property contains an active groundwater well and disturbed areas from the demolition of the previous single-family home and accessory structures in 2024. Proposed grading will occur mostly within these previously disturbed areas and entirely outside of stream setbacks. The project will not have a significant effect on the environment due to unusual circumstances. First, construction is limited to previously disturbed areas outside of stream setbacks, and the property will remain in single-family residential use. Second, the project incorporates standard environmental design features to address air quality and the accidental discovery of archaeological resources. Because these features eliminate any reasonable possibility of a significant environmental impact, the unusual circumstances exception does not apply. Additionally, the property is not a listed hazardous waste site.
Finally, the property is accessed via Hoffman Lane, which is not a designated state scenic highway. Because it does not contain scenic rock outcroppings or historical resources, the project will not impact any local scenic or historical resources. No exceptions under Section 15300.2 apply.
County Clerk
Napa
Attachments
Notice of Exemption
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