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Earlier editions: 2026-09

Title 8 — HEALTH AND SAFETY

Napa County Municipal Code Ch. 8.02 Housing Allocation Program

Napa County Municipal Code · 2026-10 edition · updated 2026-10-04 · Napa County

Cite as: Napa County Municipal Code Chapter 8.02 · Text as of 2026-10-04

8.02.010 - Definitions—Generally.

Unless the context requires otherwise, the definitions in this section shall govern the interpretation of the provisions of this chapter.

"Affordable housing capable of purchase or rental by persons with moderate or below moderate income" means that not more than thirty percent of the (gross) household income shall be spent on housing costs such as rent, mortgage payments, insurance, taxes, necessary utilities, and condominium membership fees.

"Building permits" means permits for the construction of new dwelling units on a site, not including rebuilding, remodeling, renovating or enlarging existing units, moving an existing dwelling from one unincorporated site to another unincorporated site, or units exempted from the Growth Management System.

"Growth Management System" means the comprehensive plan which is a part of the Agricultural Preservation and Land Use Element (AG/LU-119) of the county's general plan, which this chapter implements.

"Median Income" means the median income, adjusted for family size, applicable to Napa County as published annually pursuant to Title 25 of the California Code of Regulations, section 6932 or its successor provision as determined by the California Department of Housing and Community Development and/or the Federal Department of Housing and Urban Development.

"Moderate" shall mean up to one hundred twenty percent of the area median income.

"New housing units" means a room or connected rooms constituting a separate, independent housekeeping establishment for owner occupancy or rental or lease on a monthly or longer basis, physically separate from other rooms or dwelling units in the same structure, and containing independent cooking and sleeping facilities. New housing units may also be referred to as "dwelling units" or "residential units" and shall include mobile homes, not including mobile homes within the federal take line at Lake Berryessa. New housing units shall not mean the rebuilding of an existing unit, the replacement of an existing unit by another, or the movement of an existing unit or units exempted by the Growth Management System.

"Nine Bay Area counties" means the counties of Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Sonoma, and Solano.

"Persons per household" means the population in households divided by the number of occupied dwelling units.

"Population growth rate" means the change in the total population in one year's time stated as a percentage either increasing or decreasing, based on relevant data from the United States Census, the Association of Bay Area Governments, the California Department of Finance's Demographic Research unit, or similar sources for the unincorporated area of Napa County adjusted for annexations and incorporations.

"Relevant data" means information needed to calculate the actual number of dwelling units to be permitted.

"United States census" means censuses conducted by the United States Bureau of the Census, including Decennial Census and the Mid-Decade Census.

"Vacancy rate" means the number of vacant year-round dwelling units divided by the total number of year-round dwelling units in the unincorporated area.

"Year-round housing units" means those dwelling units which are capable of year-round occupancy, but not including less than monthly rentals and dwelling units within the federal take line at Lake Berryessa.

(Ord. No. 1322, § 1, 6-23-2009; Ord. 1246 § 3 (part), 2004: Ord. 1178 § 2 (part), 2000)

Exceptions & meaning →

8.02.020 - Annual growth rate calculation.

A. The annual number of new housing units in the unincorporated area of the county of Napa shall be allocated so as to allow an annual population growth rate that shall not exceed one percent of the population of the unincorporated area. Such growth rate shall be determined using the most recent census and other relevant data provided by the United States Census, the Association of Bay Area Governments, the California Department of Finance's Demographic Research Unit or similar sources. The annual number of new housing units shall be set by multiplying the population of the unincorporated Napa County by 0.01 and then dividing by the number of persons per household. The calculation may be adjusted to reflect the vacancy rate of year-round housing units and shall include comparison to the average annual growth rate for the nine Bay Area counties over the prior five to seven years (if less than one percent). In no instance shall the new annual limit be less than the prior limit if the units are required to meet the County's Regional Housing Needs Allocation, except as warranted by the occurrence of annexations or incorporations since the prior calculation.

B. At least fifteen percent of the housing units allocated each year shall be for affordable housing capable of purchase or rental by persons with moderate or below moderate income.

(Ord. No. 1322, § 1, 6-23-2009; Ord. 1246 § 3 (part), 2004: Ord. 1178 § 2 (part), 2000)

Exceptions & meaning →

8.02.030 - Implementation and review following census.

A. General Plan and Growth Management System. The county shall implement the provisions of this chapter in accordance with the Growth Management System of the Agricultural Preservation and Land Use Element of the Napa County General Plan and such other ordinances as may be, or may have been, enacted to carry out the provisions of such Growth Management System. The county reserves the right to amend the Growth Management System in accordance with the requirements of applicable law.

B. Periodic Review. The board of supervisors shall modify the Growth Management System based on data from the 2010 Census and each time the Housing Element is updated, or more frequently if so desired by the board of supervisors. In setting the annual number of new housing units (and building permits) allocated in the future, the board of supervisors shall use the most recent census and other relevant data provided by the United States Census, the Association of Bay Area Governments, the California Department of Finance's Demographic Research Unit, or similar sources.

(Ord. No. 1322, § 1, 6-23-2009; Ord. 1246 § 3 (part), 2004: Ord. 1178 § 2 (part), 2000)

Division I. Food Facilities

Exceptions & meaning →

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