describe how mature boulevard trees add curb appeal to residential neighborhoods?

Question

how do they work together with old homes and architecture to make a neighborhood 'appealing' to a homebuyer?

Answer 1

A large percentage of home buyers decide whether or not to look inside a house or take it seriously based on its curb appeal—the view they see when they drive by or arrive for a showing.
Trees add value to a home as well as being essential to a healthy community. The well-placed tree can:
Cut utility costs in half
Protect a home from wind
Cause people to spend more time outside
Act as a sound barrier/buffer
Add dimension to a home's landscape
Contribute to a lower rate of neighborhood crime,it's actually been proven that adding trees to a streetscape lowers crime!

Also, trees in front of an older home evoke a snese of nostalgia...summer days spent playing, the lemonade stand you were sure was going to make enough to buy that bike. They give a sense of the amount of time the house has been there, and the family that must have grown there. People want to feel that the home they are buying has a history, that it has been lived and loved in. Trees do this.