Точной ссылки нет , но чтоб было понятней , вот :Originally Posted by Floridian
For those of us that need to see a formula:
# of homes for sale on the market / # of homes sold that month = Months Supply
What do the numbers mean?
For some reference, in the ’89 US housing market (buyers market) saw around 7 months supply. For those of us who are more familiar with more recent years, in ’01 the US average was slightly below 4 months supply. But hot markets like Las Vegas, Boston, and parts of Florida and California should have seen below 2 months supply in recent years.
So anywhere around 4-5 months supply is roughly average. The further your numbers stray below that, means it’s more of a sellers market. The higher the number is, then the more the market favors the buyer.
P.S. погугли всё на PROPERTY SUPPLY (IN MONTHS)