CSLB-Verified · California
Licensed Landscaping Contractors in ALTADENA, CA
11 verified contractors · 7 carry active workers' comp · Average 14 years in business · Updated June 2026
Finding a reliable landscaping contractor in ALTADENA means looking beyond reviews. Of the 11 CSLB-licensed contractors operating in ALTADENA, 7 carry active workers' compensation insurance — meaning they can legally employ a crew on your property. 8 hold a Corporation or LLC structure, typically carrying stronger liability coverage than sole proprietors.
Climate & Hardiness in ALTADENA
ALTADENA sits in USDA Plant Hardiness Zone 10b, with minimum temperatures of 35–40°F and no meaningful frost season. Zone 10b is one of the most favorable climates for landscaping in the United States — a near-endless growing season, but also near-endless water demand. Experienced contractors here design around California's water restrictions, favor Mediterranean and drought-adapted species, and build irrigation systems calibrated for year-round operation. The absence of frost also means pest and disease pressure never resets — a contractor who understands Zone 10b biology is worth asking about.
ALTADENA's Soil Profile
The dominant soil across ALTADENA's ZIP codes is Loam — a well drained soil in USDA Hydrologic Group D. These slower-draining soils hold water longer than most — supportive of lush planting but prone to pooling in low spots. Ask contractors about their experience with French drains and grading.
11 Licensed Landscapers in ALTADENA
BOTTOMS UP - GARDENS & TREE CARE
Workers' Comp ActiveLicensed 1997 · 28 years in business
Sole Owner · Los Angeles County
License #743800 · Status: CLEAR ✓
(626) 644 3733
VALLEY GREEN INC
Workers' Comp ActiveLicensed 2004 · 21 years in business
Corporation · Los Angeles County
License #844306 · Status: CLEAR ✓
(626) 376 7779
ENVIRONMENTAL LANDSCAPE DEVELOPMENT INC
Workers' Comp ActiveLicensed 2007 · 18 years in business
Corporation · Los Angeles County
License #902300 · Status: CLEAR ✓
(818) 790 8607
LOPEZ TREE & LANDSCAPE INC
Workers' Comp ActiveLicensed 2014 · 11 years in business
Corporation · Los Angeles County
License #997458 · Status: CLEAR ✓
(626) 217 8035
SCOTT LANDSCAPE GROUP
WC Exempt (Sole Owner)Licensed 1992 · 34 years in business
Corporation · Los Angeles County
License #641419 · Status: CLEAR ✓
(626) 482 4941
SCRUB JAY STUDIOS INC
WC Exempt (Sole Owner)Licensed 2013 · 12 years in business
Corporation · Los Angeles County
License #985574 · Status: CLEAR ✓
(626) 375 5907
NOAH'S ARK LANDSCAPING INC
Workers' Comp ActiveLicensed 2024 · 2 years in business
Corporation · Los Angeles County
License #1115757 · Status: CLEAR ✓
(424) 257 2060
SOCAL LANDSCAPE AND TREES
Workers' Comp ActiveLicensed 2025 · 1 years in business
Corporation · Los Angeles County
License #1138267 · Status: CLEAR ✓
(626) 893 0522
LINARES LANDSCAPING LLC
Workers' Comp ActiveLicensed 2025 · 0 years in business
Limited Liability · Los Angeles County
License #1143601 · Status: CLEAR ✓
(626) 818 0757
REBOLLO'S LANDSCAPING
No Active WCLicensed 2000 · 26 years in business
Sole Owner · Los Angeles County
License #776439 · Status: CLEAR ✓
(626) 255 7226
RANEY JAMES J
WC Exempt (Sole Owner)Licensed 2016 · 9 years in business
Sole Owner · Los Angeles County
License #1017352 · Status: CLEAR ✓
(626) 278 4866
Beyond Landscaping: Specialty Licenses in ALTADENA
Some ALTADENA landscapers also hold additional CSLB classifications — useful when a project spans trades like drainage, concrete, or pools.
- 1 also hold General Engineering (A)
- 2 also hold General Building (B)
- 1 also hold C21 (C21)
- 1 also hold Swimming Pool (C53)
- 2 also hold Tree Service (D49)
ALTADENA Landscaping Market at a Glance
- 11 contractors hold a current, clear CSLB C-27 landscaping license
- 7 (64%) carry active workers' compensation insurance
- 8 (73%) are incorporated (Corporation or LLC)
- 7 have been licensed for 10 or more years
- Average time in business: 14.7 years
- Longest-established contractor: 34 years (licensed 1992)
Nearby Cities
Frequently Asked Questions
How do I verify a landscaping contractor's license in California?
Every contractor on this page links to its official CSLB license-detail record. Search the license number at cslb.ca.gov to confirm the license is current, the classification is C-27 (Landscaping), and the status is CLEAR before you hire.
What is the difference between a C-27 licensed contractor and an unlicensed landscaper?
A C-27 license means the contractor passed California's trade and law exams, posted a contractor bond, and is accountable to the CSLB. Unlicensed operators carry none of those protections — you have little recourse if work is defective or someone is injured on your property.
Why does workers' compensation insurance matter when hiring a landscaper?
If a contractor employs a crew, active workers' comp insurance means you are not liable for on-site injuries. A contractor without it can legally work alone, but you take on real risk the moment an uninsured crew sets foot on your property.
Do landscapers in ALTADENA work year-round?
Yes. ALTADENA sits in a near frost-free zone, so planting, irrigation work, and maintenance run every month of the year — though water-efficient design still matters under California's conservation rules.
