What happens when supply goes down? Demand goes up. 

When you write property listings, you’ll generate more demand from your buyers if they fear supply is limited. 

If days on market is falling, it’s easy to convince buyers that supply is limited – you just quote statistics. 

Another way to convince buyers supply is limited is to identify one or several points of difference in your property, and to emphasise those differences. 

Because if buyers want those differences and your property seems to be the only one supplying those differences, that shortage of supply will lead to increased demand.