Knowledge

Know your data sources.

Each source has a page with its publisher, update schedule, coverage, known limits, and request fields. Coverage tells you where a source is available, not which fields a property will return. You can get the same details as JSON at /api/knowledge/data-sources.

Last verified September 9, 2026. That is when this list was last rebuilt from the ParcelOps source registry, not when each publisher last refreshed its own data.

tag: lihtc

HUD LIHTC Properties No auth
National Low-Income Housing Tax Credit property inventory for affordable multifamily research.
hud lihtc affordable-housing multifamily residential
2 methodsScheduled · every year
HUD QCT & DDA Eligibility No auth
Official annual LIHTC Qualified Census Tract and Difficult Development Area screening.
hud lihtc qct dda tax-credit
3 methodsStatic