Find county GIS and property maps in Napa County

Officially linked county property-map resource. This verifies the referral and stated label; interactive layers, parcel results, legal boundaries, buildability and application eligibility are not determined here. The official referral labels this resource subscription-only.

Availability · Subscription access and separate map charges

Map Subscriptions: Subscriptions for online access to filed maps and assessor parcel maps are also available for customers regularly needing filed or assessor maps. The charge for maps is the same by subscription but you can download the maps directly and be charged automatically. Please complete an Online Map Access Sign-Up application.

Source & saved evidence

Official county property-map provider or referred mapping platform · Assessor Parcel Maps - Subscription Only (opens in a new tab)

Subscription access and separate map charges

Map Subscriptions: Subscriptions for online access to filed maps and assessor parcel maps are also available for customers regularly needing filed or assessor maps. The charge for maps is the same by subscription but you can download the maps directly and be charged automatically. Please complete an Online Map Access Sign-Up application.

Agent source review: October 26, 2026 · Snapshot 431dea4893b70dc6

Officially linked county property-map resource. This verifies the referral and stated label; interactive layers, parcel results, legal boundaries, buildability and application eligibility are not determined here.