About Us - Landscape Installation, Maintenance, Pruning, Trimming

David Sims President & Certified Arborist #WE-6910A

David Sims, President of Tree Preservation, has worked throughout Los Angeles as a successful Certified Arborist since 2001. He is an

Active member of the International Society of Arboriculture, (ISA),
Active member of Tree People, and Theodore Payne Foundation.
He holds an active D49/C61 & C27 Contractor’s license in California (#852128).
He is a graduate of Tulane University with a BA degree in Philosophy.

David purchased Tree Preservation Inc. in 2001 from McCullough’s Tree Care, an existing arboriculture firm in business since 1986 in Los Angeles.

To this date, there are key employees that have served our clients for more than 32 years!

Since childhood, David has been actively involved in landscaping and gardening work on properties ranging from individual homes, commercial properties to large private and public golf courses.

David’s personal interest include swimming, hiking, piano, and especially tree planting, native planting, and gardening! He is fascinated daily with plant and tree care!

David has donated time, money, or trees to organizations such as Tree People, Theodore Payne Native Plant Society, and various municipalities.

Call Tree Preservation and Landscaping at (310) 868-9415 or Contact Us to inquire about our Tree and Landscaping Services.

these guys rock! David is very nice and professional. The guys came and did both trees in just an hour! they cleaned it very nicely and quickly, we couldn’t believe how quick and amazing it was! Thank you, I would definitely use again and will refer!
Description of work:
removed 2 fruit trees, one avocado & one peach tree

Hailee E. Sun Valley, CA

Removed 2 fruit trees, one avocado and one peach tree
David and his crew are the best. They trimmed our huge tree with skill, protected our other bushes and plants, and left our yard clean.

Barbara B. Santa Monica, CA

Trimmed Trees
He arrived on schedule with a crew that seemed very professional. I did not get bids from anyone else because a neighbor had recently used them and was very happy.
Description of work:
Cut back dead wood from Several trees (One had 12 broken branches)

TIM J. Los Angeles, CA

Cut back dead wood from several trees
Trimmed a very overgrown, large cedar tree. The crew was on time, extremely tidy and did a great job of assessing the needs of the tree and following through. They were in touch every step of the way and even sent photos, in real time, so I could clearly understand the scope of the job as it was developing! I would definitely use this company again for any tree or landscaping needs we have.

Eileen W. Los Angeles, CA

Trimmed a very overgrown, large cedar tree
Extensive tree trimming, pruning, shaping of very tall, old trees – sycamore, magnolia, ficus, flowering pear. David and his crew were highly professional and did a great job. The price took us aback but considering the scope of the work involved, I’m sure it was fair. We highly recommend this company.

Nancy T. VASHON, WA

Extensive tree trimming, pruning, shaping of very tall, old trees
I had a little trouble connecting with Tree Preservation at first… David was on vacation… but he came out in July or August and gave me a bid, charging less because of the difficulty connecting. Later we scheduled the work for the first week in December. We confirmed again as the time drew near… and his crew came out as expected and did the work. It was a good crew… I was happy with the way they pruned trees and it was easy to talk to the crew leader (spoke good English and was a good communicator). David came out at the beginning and end of the job and we went over details. It’s clear the company knows trees and also knows the aesthetics of good pruning. I will be happy to have them return in future years.

Description of work:
Pruned trees in front and back yards. Removed two large dying Elm trees and ground stumps.

Mary Jane W. Burbank CA

Pruned Trees and Removed Dying Elm Tree
The team was clean, quick, professional, and very respectful of my garden, which they worked in and around without damaging at all. David and I planned job beforehand, and his team used a cherry picker to remove cuttings directly to street area, so that nothing fell to crush the garden. We plan to call them soon to work on our very tall grevallias.
Description of work:

David Sims and his team pruned a huge, overgrown yucca that most tree professionals do not want to work on, and a tall princess palm, and also pruned a dying old olive tree that we hope to resurrect.

Kimberly W. Los Angeles, CA

Pruned a Yucca Tree
I really liked David; he seems very honest and like he really cared about trees. I wanted him to prune another orange tree and, rather than taking my money, he said he didn’t like to prune trees in flower and that he could do it in the fall if I wanted. I appreciated his care for my trees. His estimations were a little spotty: $180 to trim an entire palm and then $270 to remove 20 fronds from another, which didn’t make a whole lot of sense. But he was willing to work with us when I told him another estimate I had received. The best was that he left us tons of free mulch from a job he had done the previous day. I have used that mulch all over my garden and yard and everything is growing great with it. Anyway, I’d definitely recommend Tree Preservation and will definitely use them in the future.

Description of work:
Trimmed avocado tree with tons of dead wood, cleaned 25 ft palm that had never been trimmed, removed long suffering orange tree.

Alisa Daubenspeck. Los Angeles, CA

Trimmed avocado and Palm Trees
Trimmed large sycamore, other small trees on property.

Jeffery Howard. Los Angeles, CA

Trimmed Large Sycamore Trees
They arrived on time, did the job exactly, & cleaned up thoroughly and removed every bit of debris. The foreman was friendly and knowledgeable and gave us some helpful hints along the way. The price seemed fair. Happy

Description of work:
Cut down a dead cypress tree

Jay Johnson. Encino, CA

Cut Down a Dead Cypress Tree
David was really nice explaining how the crew would preserve the shape of the trees and cut the overgrowth. The crew was wonderful. They did such a great job shaping my overgrown trees to become healthy beautiful trees that no longer needed to be supported by 2×4’s to hold up the branches. My trees now look like the trees in garden books. BEAUTIFUL!

Description of work:
Naturally prune our five Juniper trees and 12 fruit trees including hauling away and dump fees.

Kathy McCloskey. North Hollywood, CA

Naturally prune our five Juniper trees and 12 fruit trees including hauling away and dump fees
Excellent experience. David Sims is very knowledgeable, professional, and ethical. Prices seemed fair. His crew were skilled and did a good job of cleaning up.
Description of work:
Major trimming, removal of deadwood

Edward Beres. Pasadena, CA

Major trimming, removal of deadwood