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Nationwide Tax Assessor Data

Comprehensive property tax assessments, valuations, and ownership records for 155M+ properties. Direct from county assessor offices, delivered in real-time.
Properties
0M+
Countries
0+
Coverage
0%
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TRUSTED BY LEADING BRANDS

AS FEATURED IN
BatchData logo with emphasis on scalable access to property data and API solutions for real estate analytics, reflecting the brand's commitment to delivering bulk data services at www.batchdata.io.
BatchData logo and branding, representing scalable access to property data and APIs for real estate solutions at www.batchdata.io.
BatchData logo representing scalable access to property data API and bulk real estate data solutions at www.batchdata.io.
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AP logo representing Associated Press, featured on BatchData's page about scalable property data access and APIs for real estate applications.

What is Nationwide Assessor Data?

Nationwide Tax Assessor Data is the foundational dataset containing detailed property records collected by local tax assessors. It’s the official source for property characteristics, tax and assessment history, and ownership information, forming the bedrock of nearly all real estate decisions.

Property Identification

  • Assessor Parcel Number (APN)
  • Property Address
  • Subdivision/Tract
  • FIPS Code
  • Legal Description
  • Section-Township-Range

Ownership Details

  • Current Owner Names
  • Vesting Information
  • Mailing Address
  • Ownership Type
  • Trust/Company Flags
  • Homestead Exemption

Values & Taxes

  • Assessed Value
  • Land Value
  • Tax Amount
  • Market Valve
  • Improvement Value
  • Tax Year

Property Characteristics

  • Bedrooms/Bathrooms
  • Lot Size
  • Construction Type
  • Square Footage
  • Year Buiit
  • Pool/Garage Info
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Built for Your Industry

Built for Your Industry
Trusted by professionals across multiple sectors for critical property decisions

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Mortgage & Lending

Streamline underwriting with instant property valuations and ownership verification

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Real Estate Portals

Enhance listings with comprehensive tax assessment and property characteristic data

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Insurance

Accurate risk assessment with detailed property features and valuation history

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Investment Analysis

Identify opportunities with tax assessment trends and ownership patterns

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Marketing

Target campaigns based on property Values, ownership duration. and tax data

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Due Diligence

Complete property research with historical assessments and tax records

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Legal & Title

Verify ownership, legal descriptions. and property boundaries instantly

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Government

Support planning and compliance with accurate assessor data integration

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Nationwide Coverage You Can Trust

Our assessor data covers 99.9% of all properties in the United States, with direct relationships with county assessor offices ensuring the most accurate and up-to-date information available.
Counties Covered
0+

States

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Update Frequency
24Hrs
Historical Data
0+ Years

Flexible Delivery Options

Choose the integration method that works best for your workflow
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Real-Time API

RESTful JSON API

Sub-second response

99.99% uptime SLA

Pay-as-you-go pricing

Developer-friendly docs

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Bulk Data

Custom dota exacts

FTR/SFTP delivery

CS, 50M Parquet formats

Scheduled updates

Hostorical snapshots

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Professional Services

Custom integrations

Data enrichment

Dedicated support team

Match & append services

White-label solutions

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The Modern Advantage: Why Companies Switch to BatchData

Move beyond fragmented, slow, and incomplete data. Here’s why industry leaders are choosing our API-first platform.

Multi-Source Resilience

No single point of failure. Our blended intake from over 3,200 sources mitigates county outages, ensuring a continuous and reliable data flow for your business.

Operational Accuracy

Trust every record. We combine automated tests on every run with human-in-the-loop QA for edge cases, delivering enterprise-grade data quality.

Faster Time-to-Value

Onboard in days, not months. We accelerate your integration with data samples, expert mapping help, and prebuilt joins to get you to market faster.

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Frequently Asked Questions

Our assessor data is updated daily for most counties across the nation. We tap into direct feeds to ensure you’re working with the most current information possible, a significant advantage over legacy providers who may only update their records monthly or quarterly.
We provide comprehensive assessor data covering over 150 million properties, which accounts for more than 99% of properties across the United States. Our coverage is nationwide, including residential, commercial, and other property types.
Our data is aggregated from a multi-sourced approach, starting with direct feeds from county assessor and recorder offices. We then cleanse, standardize, and enrich this data through our proprietary processes and cross-reference it with other public and private data sources to ensure the highest level of accuracy and completeness.
Our API is designed to be developer-first. It’s a modern RESTful API with clear, comprehensive documentation, code samples, and extensive developer resources. Most development teams are able to make their first successful API calls within minutes and complete a full integration in a matter of hours or days, not weeks or months.
Absolutely. We encourage you to see the quality and speed of our data for yourself. You can sign up for a free API key to get started with a trial, allowing you to make live calls and evaluate the data within your own development environment.
We offer transparent, scalable pricing models that fit your business objectives, from startups to large enterprises. While our standard plans are listed on our site, we provide custom, volume-based pricing for enterprise clients to ensure a cost-effective solution. Contact our data experts to discuss a plan tailored to your specific needs.
Assessor data is the foundational layer. We also offer enhanced datasets like mortgage and lien data, property valuations (AVMs), listing information, and industry-leading contact enrichment (skip tracing). Our unified API allows you to access all these datasets through a single integration, so you can start with assessor data and easily add more data types as your needs grow.