Ten building deals over $1 billion, midtown office rents slumbering above $100 a square foot and total investment sales of at least $51 billion closed or in contract by December: Without question, Manhattan’s commercial real estate market, already rallying for years, soared to a high point in 2007.

The question for the New Year, of course, is whether there is any higher to climb; or, in a seemingly more likely scenario, whether we are making our way down the mountain.

After all, given the record-shattering numbers seen in the past 12 months and a less-than-stellar economic forecast in the near term, it’s hard to imagine that the coming year could offer anything to top 2007, at least with respect to investment sales.