In general we start seeing more and more listings come on the market in the second week of January as we shake off the holiday cheer and get down to business.
Inventory climbs as we get past the Superbowl and usually by spring break we're up to full speed. Below you'll see the statistical data from our local MLS (ReColorado). Each graph is "live" data and you can mouse-over each area in the map to see the corresponding time period.
These graphs are specific to the price range $799,000-$1,399,000.
The first graph shows one thing clearly--trying to buy a home in December isn't a great idea. Otherwise, anytime from February through September will have plenty of options to find a great home.
The second graph is the same data but with a rolling three month average to accentuate the trending.
I hope you find this helpful.