How do property taxes change after a sale?

[Lloyd Preece]

Hi BP, I've saved up from my job in Manhattan and after studying a handful of towns and states have started putting offers in on SFH properties in the New Haven/Hamden area of Conneticut.

A theme I’m noticing is the assessed value of the home can be anything from 40-75% of the listing price, and as the result of a fixed 0.0048 mill rate it can cause a huge swing in Property taxes which often switches a good deal to a bad deal. My question is if for example a property was assessed last year at $100,000 (with $4800 taxes) and then it sells for $180,000, will the assessed value automatically shoot up in the next assessment because it was recently sold? Or will it continue to trickle up at the 2/3% rate it historically has?

Thanks!