The Hauley (or Hawley) House is Ridgefield's oldest. Many of the very old buildings in town have become museums or similar nonprofit homes, but this one looks like it is still in private hands.
It was built around 1714 for an early minister. He also served as town clerk.
There are wonderful Museum in the Streets historic signs all around town. They would make for a fun history walk, but so far I have just been checking them out one at a time when I happen upon them. This one is near the Hawley house and gives some background.