Federal Housing Finance Agency (FHFA)

aid: fhfa
url: https://raw.githubusercontent.com/api-evangelist/fhfa/refs/heads/main/apis.yml
name: Federal Housing Finance Agency (FHFA)
type: Index
accessModel:
  pricing: unknown
  onboarding: open
  trial: false
  try_now: false
  public: true
  label: Open access
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/fhfa.png
tags:
- Housing Finance
- House Price Index
- Mortgage
- Government
- GSE
- Fannie Mae
- Freddie Mac
- Federal
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
description: The Federal Housing Finance Agency (FHFA) is an independent federal regulator established in 2008 that supervises
  Fannie Mae, Freddie Mac, and the Federal Home Loan Bank System. FHFA provides publicly accessible data APIs and datasets
  covering house price indexes (FHFA HPI), mortgage market surveys, conforming loan limits, National Mortgage Database (NMDB)
  aggregate statistics, Public Use Databases (PUDB) for Fannie Mae and Freddie Mac, Uniform Appraisal Dataset (UAD) statistics,
  and GSE performance and duty-to-serve data. Data is available in CSV, JSON, XML, and Excel formats with open public access
  under FHFA's API Terms of Service.
apis:
- aid: fhfa:fhfa-house-price-index-api
  name: FHFA House Price Index (HPI) API
  tags:
  - House Price Index
  - Housing
  - CSV
  - JSON
  - XML
  humanURL: https://www.fhfa.gov/data/hpi
  properties:
  - url: https://www.fhfa.gov/data/hpi
    type: Documentation
  - url: https://www.fhfa.gov/data/hpi/datasets
    type: Datasets
  - url: https://www.fhfa.gov/hpi/download/monthly/hpi_master.csv
    type: DataDownloadCSV
  - url: https://www.fhfa.gov/hpi/download/monthly/hpi_master.xml
    type: DataDownloadXML
  - url: https://www.fhfa.gov/sites/default/files/2023-09/HPI_dictionary.xls
    type: DataDictionary
  - url: https://www.fhfa.gov/data/hpi/summary-tables
    type: SummaryTables
  - url: https://www.fhfa.gov/hpi-calculator
    type: Calculator
  description: The FHFA House Price Index (HPI) is a comprehensive, publicly available dataset measuring changes in single-family
    home values across all 50 states and over 400 American cities, with data extending back to the mid-1970s. The HPI uses
    a weighted repeat-sales methodology based on tens of millions of home sales and is available in CSV, JSON, and XML formats
    at monthly and quarterly intervals. Datasets include purchase-only indexes, all-transaction indexes incorporating appraisal
    data, expanded-data indexes adding FHA and county recorder data, and volatility parameters. Data is free and publicly
    accessible with attribution required under FHFA API Terms of Service.
- aid: fhfa:fhfa-national-mortgage-database-api
  name: FHFA National Mortgage Database (NMDB) API
  tags:
  - Mortgage
  - National Mortgage Database
  - Statistics
  - CSV
  humanURL: https://www.fhfa.gov/data/nmdb
  properties:
  - url: https://www.fhfa.gov/data/nmdb
    type: Documentation
  - url: https://www.fhfa.gov/data/nsmo
    type: RelatedDataset
  - url: https://www.fhfa.gov/data/dashboard/nmdb-outstanding-residential-mortgage-statistics
    type: Dashboard
  description: The National Mortgage Database (NMDB) is a nationally representative, longitudinal database of residential
    mortgages providing aggregate statistics on outstanding residential mortgages and mortgage originations. Data covers loan
    characteristics, borrower demographics, and geographic distributions. NMDB aggregate statistics and National Survey of
    Mortgage Originations (NSMO) data are downloadable as CSV files with interactive Tableau dashboards for visualization.
- aid: fhfa:fhfa-public-use-database-api
  name: FHFA Enterprise Public Use Database (PUDB) API
  tags:
  - Fannie Mae
  - Freddie Mac
  - GSE
  - Mortgage
  - Public Use Database
  - CSV
  humanURL: https://www.fhfa.gov/data/pudb
  properties:
  - url: https://www.fhfa.gov/data/pudb
    type: Documentation
  - url: https://www.fhfa.gov/data/public-use-database
    type: Overview
  description: The FHFA Enterprise Public Use Database (PUDB) provides loan-level data on single-family and multifamily mortgages
    acquired by Fannie Mae and Freddie Mac, as well as data on Federal Home Loan Bank member institutions. Files include National
    File A, B, and C for single-family mortgages and property-level and unit-class-level files for multifamily. Data is downloadable
    as zipped CSV files with accompanying data dictionaries.
- aid: fhfa:fhfa-conforming-loan-limits-api
  name: FHFA Conforming Loan Limits API
  tags:
  - Conforming Loan Limits
  - Fannie Mae
  - Freddie Mac
  - Mortgage
  - CSV
  humanURL: https://www.fhfa.gov/data/conforming-loan-limit
  properties:
  - url: https://www.fhfa.gov/data/conforming-loan-limit
    type: Documentation
  description: FHFA publishes annual conforming loan limit (CLL) values establishing the maximum mortgage amounts that Fannie
    Mae and Freddie Mac may purchase. Data is available at the county level for all U.S. states and territories, downloadable
    in XLSX, CSV, and PDF formats. Limits are adjusted annually per the Housing and Economic Recovery Act (HERA) formula,
    with higher limits for designated high-cost areas.
- aid: fhfa:fhfa-uad-aggregate-statistics-api
  name: FHFA Uniform Appraisal Dataset (UAD) Aggregate Statistics API
  tags:
  - Appraisal
  - UAD
  - Housing
  - Statistics
  humanURL: https://www.fhfa.gov/data/uad
  properties:
  - url: https://www.fhfa.gov/data/uad
    type: Documentation
  - url: https://www.fhfa.gov/data/uad/puf
    type: PublicUseFile
  - url: https://www.fhfa.gov/data/dashboard
    type: Dashboard
  description: The FHFA Uniform Appraisal Dataset (UAD) Aggregate Statistics provide data on residential appraisals submitted
    to Fannie Mae and Freddie Mac, covering appraisal values, property characteristics, and geographic distributions. An Appraisal-Level
    Public Use File (PUF) with anonymized individual appraisal records is also available for research.
common:
- type: DomainSecurity
  url: security/fhfa-domain-security.yml
- type: Website
  url: https://www.fhfa.gov
- type: Documentation
  url: https://www.fhfa.gov/data/developer-information
- type: TermsOfService
  url: https://www.fhfa.gov/about/fhfa-policies/api-terms-of-service
- type: Datasets
  url: https://www.fhfa.gov/data/datasets
- type: Blog
  url: https://www.fhfa.gov/news
- type: LinkedIn
  url: https://www.linkedin.com/company/fhfa
- type: X
  url: https://x.com/FHFA
- type: GitHubOrg
  url: https://github.com/fhfa
- type: Plans
  url: plans/fhfa-plans-pricing.yml
- type: RateLimits
  url: rate-limits/fhfa-rate-limits.yml
- type: FinOps
  url: finops/fhfa-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com