Assessed values, parcels and assessment appeals.
4 reviewed links · Napa
Napa, California
County context for browsing. Agency service areas may differ.Official assessor maps and property information. Read the office’s current requirements before continuing.
Office guide →Napa County · Napa County — assessor (opens in a new tab)
Service link: Assessor Parcel Maps - Subscription Only
Assessor Parcel Maps - Subscription Only
Agent source review: October 12, 2026 · Snapshot 5fc0cd93d5a10427
Search by parcel number, assessment number, street address or aircraft tail number. Follow the portal’s field formats; the county referral redirects to its Megabyte Assessor query.
Office guide →Napa County official service / referred provider · Napa — property query (opens in a new tab)
County property lookup — Assessor parcel-data search
Directions: You can search by parcel number (begins with 0), street address, assessment number (begins with 8 or 9), or aircraft tail #.
Agent source review: October 15, 2026 · Snapshot 5ddcbd4c0edd7b4d
Napa County appeal process and application resources. An unresolved Assessor review can proceed to the Appeals Board; residential and other-property filing fees differ.
Office guide →Napa County · Napa — assessment appeals information (opens in a new tab)
Assessment appeals — Assessment appeal process and county application
Napa County Assessment Appeals Board
Agent source review: October 15, 2026 · Snapshot 39a2bbb0cacaf052
County directory of additional appeal documents.
Office guide →Napa County · Napa — assessment appeals information (opens in a new tab)
Assessment appeals — Assessment appeal documents and filing resources
Assessment Appeals Documents
Agent source review: October 15, 2026 · Snapshot 39a2bbb0cacaf052
These 0 profiles are classified under this topic by CA.gov. The county filter above does not establish local eligibility for them. Confirm availability and requirements on the official profile.
No state-directory profiles mapped to this topic. This does not mean no state service exists.