Please click on the link to my blog below to view the charts and analysis.
I sell out of Southern Monmouth and Northern Ocean Counties, but if no one answers you specifically, email me either through Trulia or my website and I will do some research for you to see if I have the Brigantine statistics in my notes from Jeffrey's last seminar.
Here is a rough idea, very rough. The boom market ended around September 2005. At that point appreciation rates were 10-20% per year. So let's use 15%. From mid 2002 to mid 2005 add 45%. In fact make it 50% for compounding. Since that peak, values are down about 10%. So very rough add 40% to 2002 prices.
As far as price per square foot, don't use it for the following reasons:
1) Accurate square foot data on most homes is unavailable. Tax assessor data is useless when it comes to square footage. I've measured thousands of homes exactly right down to the foot as an appraiser, the assessor's figure is usually off, often way off, and sometimes not even in the ballpark.
2) Single family homes are subject to too many intangibles that don't translate to price per square foot. Something as simple as an ocean view could make 2 identical homes sell at vastly different prices. There is often little rhyme or reason between the size of a home and its selling price. Condition, floor plan, and site amenities often trump mere home size.
Good luck finding your home in Brigantine anti!