Connect with an Arborist

Tree Service, Lawn Care and Urban Forestry Expert serving Washington, DC

Daniel Lonergan, ISA Certified Arborist

ISA Certified Arborist


Daniel operates in the SavATree Rockville branch in MD, providing comprehensive tree, shrub, lawn, tick and deer services to Washington DC.


Phone: (301) 545-1712


Daniel grew up in the landscape industry and worked as a tree climber out of college.


Daniel earned his degree in Outdoor Recreation Management from Virginia Tech with a minors in Forestry and Urban Forestry.

Industry Involvement and Certifications:

  • ISA Certified Arborist


Daniel lives in Virginia and enjoys fishing, hunting and surfing.

Why Did You Become an Arborist?:

“I became an arborist because I have a deep appreciation for trees and their benefits.”

Customer Service Philosophy:

“I enjoy helping the customer find a solution for problems they may be having with their landscape.”


“I am very pleased to have the opportunity to write about my experiences with your service. The previous arborist who was trying to save my giant white pine tree was very good, but his efforts were failing. As soon as you replaced him, you made the proper diagnosis and instituted the treatments that have restored my tree to perfect health, including turning the tree from significantly brown to totally green. Thank you again.I hope you will remain in this area for many years.”

M. Davis

“We were impressed by both our arborist and the crew who performed the work. Each member of the SavATree crew with whom we interacted appeared to really care about trees and took pride in both their work the company. We interviewed 3 separate service providers prior to choosing SavATree, and while SavATree was not the least expensive, the differential between quotes was not enormous and we feel very satisfied that we are getting good value for our payment. The trees on our property were one of the motivating factors in our decision to purchase, so proper care of them is a high priority for us.”

H. Clubok

“My arborist, Dan Lonergan was Very helpful in assisting with the services that I needed to complete this project. I’m very pleased with the work that was completed at my residence. Thank you.”

P. Castleberry

“Dan, the account manager is wonderful. He is very knowledgeable, professional and courteous. He keeps me well informed of the upcoming service activities and dates. The work performed was well above my expectations. The pear tree received the best pruning that it has ever had. The prices are above other estimates, but I realize that this aligns with the quality work.”

Y. Pearson

Territory List:

District of Columbia
Chevy Chase