What must the PHA notify families and owners of?

The correct choice is focused on the requirement for public housing agencies (PHAs) to inform both families and owners about the recertification results, including the effective date of any changes. This notification is crucial because it ensures transparency in the housing assistance process, allowing families to understand their ongoing eligibility for benefits and any modifications to their housing assistance payments.

Regular recertification is part of the Housing Choice Voucher program, which serves to verify continued eligibility based on income and family composition. Informing families and property owners about the results and dates for these changes helps maintain open communication, ensuring that all parties are informed and can adjust to any new financial responsibilities or changes in support. This also plays an essential role in the relationship between PHAs, landlords, and voucher recipients, facilitating smoother transactions and expectations.

The other options are not statutory obligations for PHAs in the context of program notifications. Eligibility for new properties, increases in property taxes, and potential vacancies, while potentially relevant to the broader housing context, do not specifically require notification as part of the regular communication that PHAs must maintain with families and owners regarding their housing assistance.