vacancy rate

[n] - the percentage of all rental units (as in hotels) that are unoccupied or not rented at a given time
Found on http://www.webdictionary.co.uk/definition.php?query=vacancy%20rate

vacancy rate

noun the percentage of all rental units (as in hotels) that are unoccupied or not rented at a given time
Found on http://wordnetweb.princeton.edu/perl/webwn?s=vacancy%20rate

Vacancy rate

The rate of vacancy is the part of vacant dwelling among the letting housing proposed to let in the whole of housing leted or proposed to let.
Found on http://www.encyclo.co.uk/local/21732

Vacancy Rate

The percentage of unoccupied rental space or units, e.g hotel rooms, compared to total available rental area at a given time
Found on http://www.businessballs.com/business-dictionary.htm
No exact match found