Napa County Assessor Property Search, APN Lookup & Tax Records
A Napa County property search may involve a downtown home, a St. Helena estate, an American Canyon subdivision, vineyard acreage, winery improvements, rural land, a manufactured home or a parcel damaged by fire or another calamity. The safest approach is to identify the correct 12-digit parcel number first, then route the question to the Assessor, Tax Collector, GIS, Recorder, Planning Division or Assessment Appeals Board.
Start Here: Match Your Question to the Correct Record
Napa County’s Assessor parcel system supports searches by fee parcel number, street address, assessment number and aircraft tail number. It does not present owner name as a standard search category. Fee parcel search is usually the best choice when you want a summary of current or delinquent assessments connected with a real-property parcel.
The assessment-number field is better when you are looking for one specific assessment. Address search is useful when no parcel number is available, but rural roads, abbreviations and long street names can make address-only searches less reliable.
Napa County Property Search Route Builder
Choose what you already know and what you need to complete.
Your recommended route will appear here
Select your available information, goal and property situation.
Important: This tool does not access Napa County records and does not provide an official assessment, title opinion, permit approval or tax bill.
Napa County 12-Digit APN Cleaner
Remove spaces and punctuation before using the official parcel or GIS search.
APN format result
Napa County’s Assessor and GIS tools commonly use a 12-digit parcel number.
Important: A correctly formatted number does not confirm that it belongs to the intended property.
Supplemental Property Tax Planning Estimator
Estimate a possible tax impact after a purchase, ownership change or qualifying new construction.
Estimated supplemental impact
Enter the new value, prior value, estimated tax rate and planning period.
Important: Supplemental bills can arrive separately from the regular secured bill or lender escrow payment.
Napa County Assessor Quick Facts
| Item | Current Information | Official Next Step |
|---|---|---|
| Official department | Napa County Assessor-Recorder-County Clerk | Open the official Assessor page |
| Assessor | John Tuteur | Verify current leadership before addressing formal correspondence. |
| Assessor address | 1127 First Street, Suite A, Napa, CA 94559 | Call before visiting for a specialized appraisal or records question. |
| General phone | (707) 253-4467 | Call the Assessor |
| Valuation questions | (707) 259-8740 | Call about assessed value |
| Office hours | Monday–Friday, 8:00 AM–5:00 PM, excluding county holidays | Verify holiday closures before traveling. |
| Assessor search methods | Fee parcel, assessment number, street address or aircraft tail number | Open official parcel search |
| GIS parcel report | Search by 12-digit parcel number or address | Open Napa County Public Map |
| Tax Collector | 1195 Third Street, Suite 108, Napa | Open the official Tax Collector page |
| Recorder | 1127 First Street, Suite A, Napa | Open official records and maps |
How to Search Official Napa County Property Records
Use the county-linked portal rather than a paid people-search page or unofficial property report.
Choose fee parcel, assessment, street address or aircraft tail number. Use fee parcel for the broadest real-property assessment summary.
A parcel number can be entered as 12 digits without punctuation or in four three-digit groups, such as 002-152-012-000.
Enter the street number and main street name. Remove Street, Road, Drive or Lane, and abbreviate directions to N, E, S or W.
Record the parcel number, assessment number, situs address, assessed values, value-notice link and search date.
For purchases, payments or legal research, compare the Assessor result with the tax bill, GIS parcel report, recorded deed and closing documents.
Can You Search Napa County Property by Owner Name?
The official Assessor parcel-search page lists fee parcel, assessment, street address and aircraft tail number as its search categories. Owner name is not listed as a standard Assessor search option.
When you know the property address
Search by street address, save the 12-digit parcel number and use that number for assessment, tax and GIS research.
When you know only a person or business name
Use the Recorder’s official-record index to look for deeds, deeds of trust, liens and other recorded documents. Public online access may provide only a limited index display, so additional research or document ordering may be required.
When legal ownership matters
An Assessor entry or limited Recorder index does not replace a complete title search. Use a title company or qualified attorney when ownership, lien priority, easements or insurability must be determined.
How Napa County APN and Assessment Numbers Work
Use the 12-digit parcel identifier for the Assessor, GIS parcel report, secured tax bill, maps and rural property research.
Assessment numbers generally begin with 8 or 9 and identify a specific assessment shown on county correspondence or a tax bill.
Use a shortened address, then save the parcel number from the matching result.
Where to find the APN
Napa County Search Tips for Cities, Vineyards and Rural Parcels
Searching a home in Napa or American Canyon
Address search is normally the fastest starting point. Once the property appears, save the full 12-digit parcel number before moving to the tax or GIS system.
Researching St. Helena, Yountville or Calistoga property
High-value residential, hospitality and mixed-use property may involve several improvements, recent construction, historic structures or separate business-property assessments. Confirm which assessment applies to the question.
Looking up vineyards, wineries or agricultural acreage
Use APN-based research rather than relying on a mailing address. Vineyard land may involve multiple parcels, agricultural improvements, business equipment, winery structures, caves, water considerations and recorded access rights.
Researching Lake Berryessa or remote property
Rural parcels may use nonstandard addresses, private roads or nearby landmarks. Start with GIS to identify the parcel, then confirm the APN in the Assessor portal.
How to Use the Napa County GIS Parcel Data Report
Napa County’s public map can generate a parcel-data report using a parcel number or property address. When using the parcel number, enter all 12 digits without dashes.
The report tool accepts a parcel number or address.
Begin with the first several digits and allow the suggestion list to load before completing the number.
The report may include aerial mapping, environmental information, boundaries, jurisdictions, cultural information and county permit data.
The database may not contain every land-use, water, sewage, food or permit document connected with a location.
Review official GIS and parcel-report instructions
How to View and Pay Napa County Property Taxes
The Assessor determines taxable value. The Napa County Treasurer-Tax Collector issues and collects property-tax bills, processes payments and answers questions about delinquent accounts.
Search by fee parcel or assessment number and confirm the property, fiscal year and installment.
ACH e-check payments are currently free. Credit and debit card payments currently carry a 2.32% transaction fee.
Confirm the parcel, assessment, bill type, tax year, amount and official payment page before submitting.
Keep the paid bill, transaction number, date, payment method and bank or card record.
| Payment Method | Current County-Listed Fee | Safety Check |
|---|---|---|
| ACH e-check | Free | Verify routing, account number, account type and available funds. |
| Credit card | 2.32% | Review the final processor fee before submitting. |
| Debit card | 2.32% | Confirm how the payment processor classifies the card. |
Standard secured-property tax dates
The first secured installment is due November 1 and becomes delinquent after December 10. The second installment is due February 1 and becomes delinquent after April 10. Verify current weekend, holiday and bill-specific instructions.
How to Search Napa County Deeds, Liens and Filed Maps
The Recorder-County Clerk maintains official recorded documents and filed maps. Public online access provides a limited index display, so document copies or additional research may be needed.
Search available indexes using party names and document information, then save the recording number and date.
Search by map type, book, page, map number, filing date, title or location.
A limited public index is not a complete ownership, lien-priority or title-insurance opinion.
Open official records and filed-map resources
Current Recorder copy fees
| Recorder Item | 2026 Listed Fee | Important Note |
|---|---|---|
| Official record copy | $2 per page | Total depends on the number of pages. |
| Certification | $5 for the entire document | Certification is separate from page-copy charges. |
| Recorded map copy | $4 per page | Confirm map book, page or map number before ordering. |
Homeowners’ Exemption, Prop 19 and Disaster Relief
Homeowners’ Exemption
A qualifying owner-occupied principal residence may receive up to a $7,000 reduction in taxable assessed value. Verify the current claim form, occupancy requirements and filing timing with the Assessor.
Prop 19 base-year transfer
Eligible homeowners who are at least age 55 or severely and permanently disabled may transfer a qualifying factored base-year value to a replacement principal residence elsewhere in California, subject to timing and value-adjustment rules. Napa County states that the claim cannot be filed until both transactions have closed escrow.
Review Napa County Prop 19 base-year transfer guidance
Parent-child and grandparent-grandchild transfers
Prop 19 substantially narrowed family-transfer exclusions. A qualifying family home generally requires the transferee to occupy the property as a principal residence and satisfy exemption requirements. Family farms have separate rules.
Review official family-transfer guidance
Calamity reassessment
Property damaged by a qualifying fire, flood, landslide or other misfortune may qualify for a temporary reduction in assessed value. Napa County requires more than $10,000 in damage and a claim filed within 12 months of the calamity.
Open official calamity-adjustment guidance
Napa County 2026 Decline-in-Value Review
Property owners who believe the property’s market value on January 1, 2026 was lower than the value shown on the 2025–26 property tax bill may request an informal review.
| 2026 Review Item | Official Guidance | What to Prepare |
|---|---|---|
| Valuation date | January 1, 2026 | Evidence showing market value as of that date. |
| Comparable-sale period | April 1, 2025 through March 31, 2026 | Relevant nearby sales and property-condition information. |
| Requested informal-review date | Submit by May 15, 2026 when possible | Value Review Request and a no-cost broker professional opinion. |
| Results availability | After July 15, 2026 | APN or property address to search the result. |
Review the official 2026 decline-in-value process
How to File a Napa County Assessment Appeal
Ask for an explanation of the value and provide documents that may correct factual or valuation issues.
Use comparable sales, appraisals, photographs, repair estimates and property-characteristic corrections.
The regular assessment-roll filing period is July 2 through November 30.
The filing deadline is generally 60 days from the mailing date of the supplemental or escape tax bill.
A pending appeal does not remove the obligation to pay the billed taxes by the applicable due date.
| Appeal Type | Filing Period or Fee | Important Note |
|---|---|---|
| Regular assessment roll | July 2–November 30 | Confirm current-year instructions before filing. |
| Supplemental or escape assessment | Generally 60 days from mailing | Keep the notice and mailing envelope. |
| Residential filing fee | $75 non-refundable | Verify the current classification and fee. |
| Other property filing fee | $150 non-refundable | Applies to non-residential classifications under county guidance. |
Napa County Buyer and Vineyard Due-Diligence Checklist
Napa County Property Search Troubleshooting
| Problem | Likely Reason | What to Try |
|---|---|---|
| No result by address | Street suffix, directional wording, rural address or abbreviation | Use the street number and shortened street name without Road, Street, Drive or Lane. |
| Parcel number is rejected | Missing digits, wrong assessment number or formatting problem | Confirm that the APN contains 12 digits and compare it with the latest tax bill. |
| Assessment search does not show every bill | Assessment search targets one specific assessment | Use fee parcel search for a broader parcel-level summary. |
| Assessor value differs from tax bill | Tax rates, direct charges, penalties, exemptions or supplemental bills | Ask the Assessor about value and the Tax Collector about the billed amount. |
| Mailed payment is not posted | Processing delay, returned mail or possible check theft | Review the cleared-check image, verify county receipt and contact the Tax Collector immediately. |
| GIS does not show every document | Some permit, water, sewage, food or land-use records are stored elsewhere | Contact Planning or the responsible department using the APN and property address. |
| Parcel line differs from a fence or road | GIS alignment, easement, encroachment or non-survey geometry | Review recorded maps and hire a licensed land surveyor. |
Napa County Assessor, Tax Collector and Recorder Contacts
Address: 1127 First Street, Suite A, Napa, CA 94559
Main phone: (707) 253-4467
Valuation: (707) 259-8740
Hours: Monday–Friday, 8:00 AM–5:00 PM.
Address: 1195 Third Street, Suite 108, Napa, CA 94559
Office phone: (707) 253-4327
Tax Collector: (707) 253-4312
Hours: Monday–Friday, 8:00 AM–5:00 PM.
Address: 1127 First Street, Suite A, Napa, CA 94559
Recorder phone: (707) 253-4105
Research hours: Monday–Friday, 8:00 AM–5:00 PM.
Recording hours: Monday–Friday, 8:00 AM–3:00 PM.
Documents to Prepare Before Searching, Calling or Filing
Official Napa County Source Notes
Frequently Asked Questions
How do I search Napa County Assessor property records?
Use the official Assessor parcel portal and select fee parcel, assessment number, street address or aircraft tail number. Fee parcel search is usually best for real property.
Can I search Napa County property by owner name?
The official Assessor portal does not list owner name as a standard search option. Use an address or APN for assessment research and the Recorder index for name-based recorded-document research.
How many digits are in a Napa County APN?
Napa County parcel and GIS searches commonly use a 12-digit parcel number. It may appear with dashes in four three-digit groups.
How do I search by street address?
Enter the street number and main street name. Remove Street, Road, Drive or Lane, and abbreviate directional words to N, E, S or W.
Who handles Napa County property tax payments?
The Napa County Treasurer-Tax Collector handles tax bills, payments, delinquent accounts, penalties and payment receipt questions.
What are Napa County’s online property-tax payment fees?
ACH e-check payments are currently free. Credit and debit card payments currently carry a 2.32% transaction fee. Verify the checkout total before paying.
What should I do if I mailed a property-tax check?
Confirm that the county received the payment, review the processed-check image and contact the Tax Collector promptly if you receive a delinquency notice or see an altered payee.
How do I create a Napa County GIS parcel report?
Open the public map, select “I want to…,” choose “Get Parcel Report,” and enter the 12-digit parcel number without dashes or use the property address.
Is a Napa County GIS parcel line a legal boundary?
No. GIS parcel lines and Assessor maps are reference information. Use recorded maps, title documents and a licensed surveyor for exact boundary questions.
How do I search Napa County deeds and liens?
Use the Recorder’s official-record index and search available party-name and document information. Use a title professional when a complete ownership or lien conclusion is required.
What are the Napa County 2026 decline-in-value dates?
The informal review concerns value as of January 1, 2026. The county requested submissions by May 15, 2026 when possible, with results available after July 15, 2026.
When can I file a Napa County assessment appeal?
The regular-roll filing period is July 2 through November 30. Supplemental and escape assessments generally have a 60-day filing period from mailing.
How long do I have to request calamity reassessment?
The claim must be filed within 12 months of the calamity, and qualifying damage must exceed $10,000.
Are the tools on this page official Napa County tools?
No. They are planning helpers only. They do not create an official tax bill, assessment, refund, exemption decision, title report, legal survey, permit approval or appeal ruling.
Your Best Next Step
Begin with the official Assessor parcel search and save the complete 12-digit APN. Use that same number when checking the GIS parcel report, secured tax account, filed maps and assessment notices. Use the Recorder for deeds and liens, Planning for land-use questions, and the Assessment Appeals Board for a formal value dispute.