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    • Low-Income Housing Tax Credit (LIHTC) Difficult Development Areas

    Metadata Updated: March 11, 2026

    This service provides spatial data and information on Difficult Development Areas (DDAs) used for the Low Income Housing Tax Credit program. DDAs are designated by U.S. Department of Housing and Urban Development (HUD) and defined in statute as areas with high construction, land, and utility costs relative to its Area Median Gross Income (AMGI). DDAs in metropolitan areas are designated along Census ZIP Code Tabulation Area (ZCTA) boundaries. DDAs in non-metropolitan areas are designated along county boundaries. DDAs may not contain more than 20% of the aggregate population of metropolitan and non-metropolitan areas, which are designated separately.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date March 1, 2024
    Metadata Updated Date March 11, 2026

    Metadata Source

    Harvested from HUD JSON

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 1, 2024
    Metadata Updated Date March 11, 2026
    Publisher U.S. Department of Housing and Urban Development
    Maintainer
    Identifier 6e4c2ee69456496193ab1bd286efddf2
    Data First Published 2018-01-26T22:04:27.000Z
    Data Last Modified 2025-02-24T22:26:40.021Z
    Public Access Level public
    Bureau Code 025:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Data Dictionary https://hud.maps.arcgis.com/sharing/rest/content/items/6e4c2ee69456496193ab1bd286efddf2/info/metadata/metadata.xml?format=default&output=html
    Harvest Object Id ffac934a-acce-4232-b69c-97e829a8c4a5
    Harvest Source Id c98ee13b-1e1a-4350-a47e-1bf13aaa35d6
    Harvest Source Title HUD JSON
    Homepage URL https://hudgis-hud.opendata.arcgis.com/datasets/6e4c2ee69456496193ab1bd286efddf2
    Old Spatial United States
    Program Code 025:000
    Source Datajson Identifier True
    Source Hash 57ad4dbeda46b59e5b4391783538969471a8d26f963fb7d3ce92f47ac2d3076b
    Source Schema Version 1.1
    Spatial {"type":"Polygon","coordinates":-124.733253,24.544245,-124.733253,49.388611,-66.954811,49.388611,-66.954811,24.544245,-124.733253,24.544245}

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