Long Island home prices increased on average during the third quarter, according to new numbers from appraiser Jonathan Miller.

The average price of a Nassau County home increased 5.7 percent from the second quarter through the third to $628,839. The average in Suffolk–not including the Hamptons or the North Fork–increased quarterly 3.8 percent to $469,331.

Sales, too, in both Long Island counties increased from the second through the third quarter. In Nassau, sales were up 15.5 percent; in Suffolk, 10.5 percent. But sales were down in both counties from the third quarter of 2006.

We covered the Queens housing market in the third quarter earlier today.

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