Fairfax County Executive Tony Griffin on Monday will announce his blueprint for closing a nearly $650 million budget shortfall, in a spending plan expected to include deep cuts and a proposed increase in the property tax rate.

The fiscal 2010 budget rollout is the first step in a months-long budget-making process, one of the most painful on record amid a deepening recession and housing crash. The shortfall is rooted in a drop in home values as steep as the appreciation seen during the height of Northern Virginia’s building boom.