About Us

Meet the owner, Jeff Grennan

Treeline’s owner, Jeff Grennan, grew up surfing and fishing in San Diego. He got an early education in native plants from his father, Al Grennan, a local botany professor and an expert in native plants. Jeff spent much of his childhood helping Al collect samples in the San Diego backcountry.

Jeff started in the tree business in his 20s, where he learned the finer points of tree care from Michael Ball, a well-known local arborist.

Jeff started Treeline Tree Service almost 20 years ago, and has been providing quality tree services to a growing customer base since then.

Jeff employs a small, highly skilled crew with years of experience in all aspects of tree care. This makes it possible to guarantee outstanding results at a reasonable price. Quality work and customer satisfaction are the focus of every job we do. We hope you will join our many repeat customers.

Treeline’s owner, Jeff Grennan, grew up surfing and fishing in San Diego. He got an early education in native plants from his father, Al Grennan, a local botany professor and an expert in native plants. Jeff spent much of his childhood helping Al collect samples in the San Diego backcountry.

Jeff started in the tree business in his 20s, where he learned the finer points of tree care from Michael Ball, a well-known local arborist.

Jeff started Treeline Tree Service almost 20 years ago, and has been providing quality tree services to a growing customer base since then.

Jeff employs a small, highly skilled crew with years of experience in all aspects of tree care. This makes it possible to guarantee outstanding results at a reasonable price. Quality work and customer satisfaction are the focus of every job we do. We hope you will join our many repeat customers.

Call today for a free estimate!

Ready to make an appointment for a free estimate?

Give us a call today! We will call you back in the afternoon or evening to schedule an estimate. If you prefer, we can look at your trees while you are at work and leave an estimate at your door.