Of course there are those whom have built and lived in their homes for 20 years plus and those whom get itchy feet after a mere 12months and decide to sell
There is a portion of the market that turns over quite frequently, and these tend to dominate the sales in a given year.
For example, first home buyers typically do not stay in their first house for long, instead trading up after a few years. Similarly younger couples will tend to move to larger houses in family friendly areas after a few years.
These transactions will tend to dominate the sales and overwhelm the much smaller number of sales of houses that have been owned for 20 or more years.
