Tree Service in San Dimas, CA
San Dimas protects mature trees on private lots and community trees along its streets. Which permit, if any, you need is the first thing our tree service in San Dimas sorts out before we trim or remove.
Tree care in San Dimas
A Western town that protects mature trees
In San Dimas, an oak with a trunk 8 inches thick — or most other trees at 10 inches — is a mature tree that needs a permit to remove. The trunk is measured 36 inches above the ground. The city passed this rule in 1990, and removal is allowed only for disease, development or safety. The town began as Mud Springs and grew around citrus after the railroad came in 1887. It became a city in 1960. More than 8,000 community trees line its streets, parks and front-yard easements, and they are trimmed every four to five years.
In San Dimas, a tree in your front yard may belong to the city — if it sits inside the easement.
Who governs tree work in San Dimas
City of San Dimas
Tree work in San Dimas follows the city's own tree rules. The owner of a property must first obtain a tree removal permit from the Development Services, Planning Division, before removing or relocating any significant trees(s) from their property. Title 13 of the San Dimas Municipal Code sets the conditions for the acquisition of a permit for any work involving Community trees. Rules change. Confirm current requirements with the jurisdiction before work begins — filing a permit is the property owner's responsibility, not ours.
Source: Tree Preservation
What we handle
Mature-tree removals, height cuts and palm trims for San Dimas homes
Supreme Tree Experts removes trees, prunes crowns and grinds stumps in San Dimas, where an 8-inch oak counts as mature. When a storm off the canyon drops a tree, San Dimas owners turn to Supreme Tree Experts.
Tree Removal
Our crews remove trees only after the city's size rule is checked. In San Dimas, an oak 8 inches thick or most other trees at 10 inches need a removal permit. The city allows removal only for disease, development or safety.
Tree Trimming & Pruning
We prune trees on your lot to proper standards, with cuts back to strong limbs. Trees in the parkway or front-yard easement are community trees. Pruning one needs a free permit from Parks and Recreation, and the worker needs a city business license.
Stump Grinding & Stump Removal
After an approved removal, our grinder takes the stump low so a replacement tree has room. The city may ask for a new tree in its place. We clear the chips and leave the spot ready to plant.
Palm Tree Trimming & Skinning
We clear dead fronds and seed stalks from tall palms before they fall on the roof or the drive. Next comes skinning, which cuts old frond bases off the trunk in neat rows. Our lift truck for palms carries the crew up.
Emergency Tree Service
We answer 24/7 when a storm drops a tree on your home at night. Homes near the canyon and the mountains face storms and dry winds that can bring down big limbs. We clear the hazard, then the mess.
Tree Maintenance
We check your own trees each year, on a schedule that fits them. The city trims its 8,000-plus community trees every four to five years, zone by zone. Trees near schools and major streets get trimmed more often than yours.
Tree Height Reduction
We reduce tall trees near the house with proper cuts, never topping. We shorten the longest limbs back to side branches that can take over. That lowers the crown and eases the pull of the wind.
Estate Tree Care
We map the mature trees on larger lots, including big multi-trunk ones. Here, a multi-trunk tree totaling 38 inches around, measured 36 inches up, counts as mature. Then we plan care for each one by season.
Tree Shaping & Shrub Shearing
We shear front-yard hedges and shrubs on a steady schedule so the yard keeps its look. We trim to a clean line and keep growth off walks, gates and windows. Every clipping leaves with us, and walks are swept.
Landscaping
Our planting plans can follow the city's guide to replacement tree types. A tree that suits the guide and your yard gets a good start. We match each pick to the sun, soil and water you have.
Hardscape
We plan walks and patios near the street around community trees in front-yard easements. Building near one needs the Municipal Arborist's written approval first. We lay out the work so it stays clear of those roots.
San Dimas tree questions, answered
Start here — these 6 cover most of what you need before booking tree work in San Dimas. If yours is not here, call 877-787-7363 and ask.
Mature trees. That means any oak 8 inches or more in trunk diameter, any other tree 10 inches or more, or a multi-trunk tree totaling 38 inches around. Measure 36 inches above the ground. The Planning Division issues removal permits.
A tree the city owns and cares for. Community trees grow in parkways, in front yards inside the city right-of-way or planting easement, in parks and at city buildings. No one may prune, plant, spray or disturb one without a permit from Parks and Recreation.
No. There is no fee. A business doing the work must show a current San Dimas business license. The permit has an end date, and the work must be done in the time and manner it describes. Break its terms, and the permit is void.
Every four to five years. The city aims for every four. It is split into twenty zones, and trees near schools, downtown and on major streets are trimmed more often. West Coast Arborists does the work under contract, including pruning, planting and removals.
Yes — $600 for tree services, wherever the job is. Trunk size, permits and access on sloped lots shape much of the price here.
Yes, 24/7. Homes near the canyon and the mountains face storms and dry winds that can drop big limbs at night. Call 877-787-7363.
What happens after you call from San Dimas
- 01.
Measure at 36 inches
An arborist measures each trunk 36 inches up and notes whether the tree sits in a front-yard easement.
- 8- and 10-inch lines
- Community tree check
- 02.
Right office
Private removals go to the Planning Division. Work on a community tree needs a Parks and Recreation permit.
- Owner applies
- No fee for community trees
- 03.
Tree day
The crew prunes or removes as approved, chips the brush and grinds the stump.
- Approved work only
- Stump ground below grade
Trunks measured, crews licensed, gear owned: San Dimas work since 1985
Tree work goes wrong when it is rushed or under-equipped. We run our own 75-foot boom trucks, lift trucks, chippers and stump grinders, and every crew works under an ISA Certified Arborist — so the job gets done right the first time.
We hold California license #1002853 for both landscaping and tree and palm work, we are bonded, we carry general liability and every employee is on workers’ compensation.
ISA Certified Arborist
An arborist visits free, measures the trunk 36 inches above the ground and tells you if the tree is mature under city rules.
Licensed, Bonded & Insured
Our California contractor's license, #1002853, names tree service (C-61/D-49) and landscaping (C-27). We're bonded and every worker is insured.
Southern California Since 1985
Founded in 1985 as a family business — by then San Dimas had been a city for 25 years.
Our Own Equipment
We bring our own 75-foot boom trucks, chippers and stump grinders, so the job runs on our schedule, not a rental yard's.
Reviews to read before you book in San Dimas
Every word below was written by a customer on Google, not by us. Long reviews are shortened to fit the card — never reworded. None of them was left in San Dimas: they come from customers across Southern California. Read them for how a crew behaves on a job, then decide whether that is who you want in San Dimas.
“Great pricing & service. Highly competent with tricky jobs. We have used them for more than 10 years.”
Melanie Butler
Local Guide
“We got bids from five contractors. After I talked to them all and checked out their licenses and work, we decided to go with Supreme. … The job took a day and a half, and when they were done, they left the place immaculate.”
Hank Shaeffer
“Great tree trimmers! I’ve used Supreme Tree Experts twice to trim the palm trees in my yard. … The guys who come out are quick thorough, and clean. And very careful not to damage property.”
Emilie Pacheco
“These guys have worked on my property 3 times now. They are always on time and do a fantastic job. I highly recommend them!”
Ray Thompson
“After soliciting several quotes on some difficult yard work, we chose Supreme because of their licensed Arborist Temis … The crew was extremely hard working and we couldn’t believe their continuous work ethic on one of the hottest days of the year.”
Gary Brown
Local Guide
San Dimas and the area around it
San Dimas runs from the valley floor up to the San Gabriel Mountains, with San Dimas Canyon inside its limits and Bonelli Park next door.
- ZIP code
- 91773