How to find land in a qualified census tract or DDA
· 5 min read
To find land in a qualified census tract, start with HUD's QCT boundaries and search the parcels inside them. Add DDA boundaries if either designation fits your LIHTC strategy, then filter for acreage, zoning, building coverage, and ownership. An address lookup checks a site you already know; a parcel search finds land you have not identified yet.
What you need before starting a QCT or DDA land search
Use HUD's QCT and DDA datasets for the designation year relevant to your project. HUD publishes annual designations and effective-date guidance. Save the year and source with your results so a later review can reproduce the screen.
QCTs and DDAs are different geographic layers. Do not infer DDA status from a census tract number, or substitute an opportunity zone map for either designation. Their role in a potential basis increase is separate from whether the land is buildable or competitive under a state's allocation process.
How to screen parcels for LIHTC land
- Set the search area and designation year. List the counties and municipalities you want to cover. Use the corresponding HUD boundary files and retain their source dates.
- Join the boundaries to parcels. In GIS, intersect parcel polygons with the QCT and DDA layers. Keep separate QCT and DDA flags and record partial overlaps. A parcel centroid is useful for a first pass but can miss land crossing a boundary.
- Apply your acreage and building screen. Set a minimum parcel size, then examine building footprints and imagery for vacant or lightly improved sites. Gross acreage includes land that may be unusable. Check adjacent parcels separately if assemblages fit your strategy.
- Separate zoning paths. Put sites permitting the proposed multifamily use in one group and sites needing further entitlement research in another. A future land use designation can support a rezone thesis; it is not current zoning permission.
- Check development constraints. Review flood and wetland layers, access, utilities, and the state's current QAP criteria. Mark missing information for research rather than treating it as a pass.
- Resolve ownership and verify finalists. Retain the parcel ID, owner of record, deed reference, and mailing address. Research the LLC or nonprofit before outreach, and confirm designation and entitlement questions with the relevant agencies before underwriting.
What should the shortlist contain?
| Field | Why keep it |
|---|---|
| County and parcel ID | Address-free land still needs a stable identifier |
| QCT flag, DDA flag, designation year | Shows which geography qualified the candidate |
| Overlap and boundary notes | Flags parcels that need a closer eligibility check |
| Gross acres and usable-land notes | Separates parcel size from development capacity |
| Zoning district, jurisdiction, source | Identifies who controls the entitlement path |
| Constraints and unresolved checks | Keeps missing evidence visible |
| Owner, mailing address, entity research | Gives the acquisitions team a starting point for outreach |
Running the search in MAIA
Try: Find parcels of at least four acres in these counties inside a QCT or DDA. Separate multifamily-zoned sites from rezone candidates, flag partial boundary overlaps, and show building coverage, owners, and sources. State the designation year used. This is a screening brief; check which layers and dates are available in your market before relying on the output.
MAIA's affordable housing workflow brings the parcel screen, context layers, and owner research together. The QCT rezone example shows why current zoning and future land use need separate columns. For a search spanning jurisdictions, use the multi-county zoning checklist.
Questions about QCT and DDA land searches
Can I search for vacant QCT land without an address?
Yes. Start with the designation boundary and intersect it with parcel polygons. Addresses are optional; county and parcel ID identify each result.
Does being inside a QCT or DDA make a site eligible for LIHTC?
The designation is one input. It does not establish project eligibility, an allocation, zoning approval, or a final basis increase. Verify the applicable HUD timing rules and housing agency requirements for your project.
How do I handle a parcel partly inside a QCT?
Keep it flagged for review. Show the parcel and designation boundaries together and confirm treatment for the proposed building location with the relevant agency. Do not label the whole parcel eligible from a centroid match.
