Tree Removal
Safe, efficient removal of hazardous, dead, or unwanted trees of any size.
Denver Metro • Serving All of Colorado
Colorado's veteran-owned
Colorado's veteran-owned
tree experts
From routine trims to high-risk removals beside power lines — done safely, fully licensed and insured.
or call (720) 707-5745
- Certified Arborist
- Fully Licensed
- Fully Insured
- Veteran Owned
- Free Estimates
What We Do
Full-service tree care
One crew for everything from a single pruning cut to the removals other companies won't touch.
Trimming & Pruning
Crown thinning, deadwooding, and shaping that keeps your trees healthy and safe.
Stump Grinding
Complete stump removal and grinding to reclaim your yard and stop regrowth.
Emergency & Storm Damage
Fast response for fallen limbs and storm-damaged trees when you need help now.
Power-Line & High-Risk Trims & Removals
The dangerous work near energized lines and structures that most companies turn down — done safely, by the book, and fully insured.
Our Specialty
Power-line & high-risk work
When the tree is tangled in the lines, leaning over the house, or a hundred feet up a canyon slope, that's our call to make. Our certified arborists are trained and insured for the hazardous removals most crews decline — and we get them done safely, every time.
See Us Work
A technical removal, up close
Rigging and sectioning a pine in a tight, high-risk setting.
Our Work
On the job across Colorado
Real crews, real trees, real results.
Who We Are
Discipline earned in service
Alpha Sierra Tree Services (A&S) is owned and operated by Austin Walpole, a combat veteran who served two tours in Afghanistan. The same discipline, focus, and respect for the mission he carried overseas goes into every job — whether it's a careful prune in your backyard or a hazardous removal beside a power line.
We believe in doing the hard, dangerous work the right way: safely, honestly, and fully insured. That's a standard our customers feel and our crew lives by.
As seen on FOX31 Denver, volunteering with Saluting Branches to care for the grounds at Fort Logan National Cemetery.
Service Area
Denver metro — and all of Colorado
We're based in the Denver metro, but we don't stop at the county line. A&S serves the entire state of Colorado and we're ready and willing to travel for the jobs that need doing.
When the competition is reluctant to make the drive or take on the risk, that's exactly where we come in.
Denver Metro • Front Range • Mountains • Western Slope • Statewide — if it's in Colorado, we'll get there.
Get a free estimate
Tell us about your trees. We'll get right back to you.
Call or Text
(720) 707-5745
Credentials
Veteran owned & operated. Certified arborist. Fully licensed & insured.