It’s worth the extra effort. Environmental studies and real estate experts agree that a mature tree near your home can boost its value by 3 to 15 percent. “You do not, in fact, need to own the tree to see the financial benefits,” said Geoffrey Donovan, an economist and scientist who consults on the benefits of urban trees. Renters might see reduced cooling costs in summer because of a mature tree’s shade, along with better air quality and reduced traffic noise, he said.