Also every market is different for vacancy.

I included in the proposal the benefits for the landlords, such as no worries for vacancies, a 5% profit share on top of the rental rate and the provision of a professional cleaning team for their property.

Once you get past Butler the vacancy rate goes up substantially. 

Reserves: Savings account that I place reserves for maintenance, Capex, vacancy, etc.

Other than that, I'd wait until you have a vacancy rather than 'forcing' one to facilitate a move into Section 8 tenancy.  

For vacancies, you deal with them as they come up...or as Bill mentioned, hire a good property manager.

You’ve already paid more in vacancy than they will charge you to run it for you.

Hello BP, Is there a metric, tool or indicator I can use to determine vacancy rates in a specific area before buying a rental property?

Hi All I am trying to understand which areas in south jersey makes good places to invest in - eviction, rental vacancy, roi

They have to have reserves for vacancies.