The 2024 American Community Survey (ACS) does not treat every vacant housing unit as the same kind of vacancy. The Census Bureau assigns a vacancy status based on why the unit is vacant. That status affects the numerator, denominator, and interpretation of a vacancy measure.
For estate-property research, keep the Census label with the estimate. A vacant unit offered for rent is different from one that has been sold but is not occupied. Neither category identifies a parcel's owner, probate status, title condition, or authority to sell.
The 2024 ACS vacancy categories
The Census Bureau's 2024 subject definitions describe these primary vacancy statuses:
| Census label | Definition in the 2024 ACS | What the label does not establish |
|---|---|---|
| For rent | A vacant unit offered for rent, including a unit offered both for rent and for sale. | That a tenant has signed a lease, that the unit is habitable, or that the owner is known. |
| Rented, not occupied | A vacant unit that has been rented but is not yet occupied. The category includes units where money has been paid or agreed upon but the renter has not moved in. | That the unit is available to a new renter or that the lease has ended. |
| For sale only | A vacant unit offered for sale only. If it is offered either for rent or for sale, the ACS puts it in "for rent," not "for sale only." | That a sale is pending, that title is clear, or that an estate has authority to convey it. |
| Sold, not occupied | A vacant unit that has been sold but is not yet occupied, including a recent sale where the new owner has not moved in. | The recording date, buyer's identity, closing status, or whether the deed has been recorded. |
| For seasonal, recreational, or occasional use | A vacant unit used or intended for use in certain seasons, on weekends, or occasionally during the year. | That the unit is abandoned or available for sale. |
| For migrant workers | A vacant unit used or intended for occupancy by migrant farm workers during the crop season. | That the unit is part of the ordinary rental or homeowner inventory. |
| Other vacant | A vacant unit that does not fit the other vacancy statuses. | A single condition. The category can include different reasons and needs its own supporting detail. |
The definitions come from the 2024 ACS and Puerto Rico Community Survey subject definitions. The Census Bureau's 2024 vacancies publication reports these categories as housing-unit estimates, not as an address-level property list.
Why "for rent" is not the same as all rental vacancy
The ACS rental vacancy rate uses a defined rental inventory. Its numerator is vacant units "for rent." Its denominator includes renter-occupied units, vacant units "for rent," and units that are rented but not yet occupied. That means a published rental vacancy rate is not simply the number of vacant units divided by all housing units.
The distinction matters when a research memo compares a rate with a category count. A count of "for rent" units excludes "rented, not occupied" units, while the rental vacancy rate's denominator includes them. Combining the two may be appropriate for a stated purpose, but the resulting measure should be named and calculated as a new measure.
Why "sold, not occupied" is a separate status
"Sold, not occupied" describes a unit after a sale but before the new owner occupies it. It is not the same as "for sale only," which describes a unit being offered for sale. The 2024 ACS subject definitions also explain that the older combined category "rented or sold, not occupied" was split into the two separate statuses beginning with the 2005 ACS.
That split prevents a reviewer from treating an unoccupied post-sale unit as current sale inventory. For a specific property, the ACS status still needs to be checked against the contract, closing documents, recorded deed, possession date, and local property records. A survey category cannot answer those title or transaction questions.
What homeowner vacancy measures
Homeowner vacancy is a rate, not a separate vacancy-status category. The 2024 ACS defines it as the proportion of the homeowner inventory that is vacant "for sale." The calculation divides vacant "for sale only" units by the sum of owner-occupied units, vacant "for sale only" units, and "sold but not yet occupied" units, then multiplies by 100.
This denominator explains why a homeowner vacancy rate should not be read as the share of all vacant units. It is designed to describe the homeowner inventory. It includes sold but not yet occupied units in the inventory, while the numerator counts only units for sale only.
Why "other vacant" needs its own review
"Other vacant" is a residual Census category, not a synonym for abandoned. The 2024 subject definitions say that additional "other vacancy status" information is collected only for units in this category. The subcategories include foreclosure, personal or family reasons, legal proceedings, preparation to rent or sell, repairs or renovation, a unit held for occupancy by a caretaker or janitor, and abandoned or possibly condemned units. The legal-proceedings subcategory includes units held for the settlement of an estate, in probate, involved in eviction or divorce proceedings, or associated with a deceased owner. A final "other" subcategory covers reasons that do not fit those options.
The Census Bureau's 2024 publication gives a national example of the problem: the "other vacant" group includes units in foreclosure, units being repaired or renovated, and units that were abandoned or possibly condemned. Those conditions have different meanings for an estate file. A unit held for estate settlement is not automatically a foreclosed or abandoned property, and a unit flagged as possibly condemned is not proof of a code-enforcement order.
Do not collapse the categories without a stated rule
A single total vacant count can be useful when the question is the size of the vacant housing stock. It becomes misleading when the question is market availability, recent sale status, homeowner inventory, or possible property distress.
Before combining categories, record:
1. The exact categories included in the numerator. 2. The denominator and the reason it matches the question. 3. The ACS release, year, geography, and estimate type. 4. The estimate and margin of error. 5. The reason the combined measure is being used.
For example, a market-availability measure may combine "for sale only" and "for rent," while homeowner vacancy uses a different numerator and denominator. A total that also includes "sold, not occupied" and "other vacant" answers a broader question about vacant units, not the number of homes currently available to a buyer.
How to use the data in estate-property research
Use the ACS to describe housing conditions for a defined geography. Keep the survey estimate separate from parcel-level evidence. The ACS estate-property research data limitations guide covers the related issues of survey universe, geography, and margin of error.
For a particular property, use the address, parcel identifier, assessor and tax records, deed chain, court file, listing history, and other dated sources that fit the research question. Investigative research services may help gather and organize those public records. Neither the ACS category nor a research service determines ownership, title, probate authority, or legal effect.
Sources and limitations
This guide uses the Census Bureau's 2024 ACS subject definitions and its 2024 housing-vacancy publication, accessed August 8, 2026. ACS estimates describe housing units in a survey-defined universe. They do not identify every property in a geography and do not prove that a particular unit has a certain owner, title status, sale status, condition, or probate connection. Preserve the estimate's margin of error and source metadata in any research log.
**Professional disclaimer:** This article is general research, not legal, title, tax, appraisal, housing, or investment advice.