Engineering & Conservation Division


Engineering DivisionPlanning, Building & Environmental Services

Application & Permits - Blurred


About Us





Environmental Health


Citizen Portal Your place to find Permits and Application Status 


Engineering Division

About Us:

The Engineering Division has primary responsibility for processing grading permits and floodplain management permits, and enforcing Stormwater pollution and prevention measures. We provide information and assistance to the public regarding compliance with various land development and environmental policies and regulations at the federal, State, and local levels. The Engineering Division is also responsible for FEMA floodplain management implementation and resources, and implementation of the Napa County Roads and Streets Standards.


Programs & Services

Napa County Floodplain Ordinance

Process grading and floodplain management permits, and review well permits in flood zones.

Napa County Stormwater Ordinance

Enforce Stormwater pollution and prevention measures.

Pre-Application Meetings 

Engineering Services staff recommends scheduling a consultation meeting with an Engineer to review your project and ideas, and avoid common submittal and processing pit-falls. To schedule an appointment at 707-253-4417.

Useful Links

  ...coming soon

Engineering services not listed above are part of the Public Works Department. These services include reviewing record map submittal and processing applications for lot line adjustments and certificates of compliance. Additionally, the Engineering division in the Public Works Department will continue to be responsible for maintaining land development records such as record maps and right of way mapping. You may also continue to contact the surveyor via the Public Works Department. For specific information you may contact the following:

Certificates of Compliance, Records of Survey, and other maps: Danielle Goshert 707-259-8380

Lot Line Adjustments: Patt Throne-Hetzer 707-259-6719

Encroachment Permits: Mike Shepard (Roads Division) 707-944-0196

Traffic Engineering: Paul Wilkinson 707-253-4290

Other Department Information

Where Are We Heading?

Agricultural Protection Advisory Committee (APAC)

The County Executive Officer announces the newly created Napa County Agricultural Protection Advisory Committee. This ad hoc committee is intended to serve as an advisory committee to the Planning Commission for purposes of making recommendations to the Planning Commission on a variety of winery development and agricultural protection measures.

Agricultural Protection Advisory Committee

Well-draw Down for WAA

Update to Water Availability Analysis

A Water Availability Analysis is conducted as part of the discretionary groundwater permit application review process for projects located in the unincorporated county. The proposed changes reflect the guidance staff received from the Board of Supervisors and the Groundwater Resources Advisory Committee (GRAC).

2014-12-01 Water Availability Analysis FAQ-Comments Received

UPDATE: Board of Supervisors & Planning Commission Meeting Location

As of October 7, 2014, the Board of Supervisors will begin meeting at the South Campus location of 2741 Napa Valley Corporate Drive, Building 2. The Planning Commission meetings will begin on October 15, 2014 at the same location.

Water Well Pump 110x70

CalHome Funding for Private Water Wells

Funding available for drought-affected private potable water wells.

CalHome Funding for Private Water Wells

PBES Customer Permit Center

Consolidated Permit Service Center

Enjoy the convenience of having your questions answered about planning, building, environmental health, engineering and conservation (vineyard) issues every day, (M-F 7:30-5:00PM).

More on the Permit Service Center

Bare Hands Wearing Gloves

Repeal of the "No Bare Hand Contact" Law

In 2013, Section 113961 of the California Retail Food Code (CalCode) was amended, prohibiting bare hand contact with ready-to-eat foods. The law was passed because recent studies indicate hand washing alone is not enough to prevent foodborne illnesses, and that food service employees are the source of contamination in more than two-thirds of the foodborne outbreaks reported in the United States with a bacterial or viral cause. Proper handwashing and the proper use of gloves have been shown to be the most effective way to prevent the transfer of viruses from food workers’ hands to food consumed by thepublic. Most states already have similar laws in place.

Repeal of the No Bare Hands Contact Law

Housing Element cover 2014

Draft Final 2014 Housing Element Update

We are working to update the Housing Element of the County's General Plan and now have final draft documents for Planning Commission and Board of Supervisors consideration and possible adoption. Public input is encouraged. Hearings will commence before the Planning Commission on September 3, 2014 and will tentatively be before the Board of Supervisors by November.

2014 Housing Element Update

in the kitchen muffins

Cottage Food Law

Effective Jan. 1, 2013, State law will allow private homes to be used to prepare and package food products for sale to consumers under certain conditions. To find out more, follow the link below!

Cottage Food

Environmental House Planning

Current Project Information

Find documents and information about major projects, development applications, and other Department work programs.

Learn more!