CSLB-Verified ยท California
Licensed Landscaping Contractors in KNIGHTSEN, CA
4 verified contractors ยท 2 with active workers' comp ยท Average 10 years in business ยท Updated August 2026
Finding a reliable landscaping contractor in KNIGHTSEN means looking beyond reviews. Of the 4 CSLB-licensed contractors operating in KNIGHTSEN, 2 carry active workers' compensation insurance โ meaning they can legally employ a crew on your property. 1 hold a Corporation or LLC structure, typically carrying stronger liability coverage than sole proprietors.
Climate & Hardiness in KNIGHTSEN
KNIGHTSEN sits in USDA Plant Hardiness Zone 9b, with winter minimum temperatures of 25โ30ยฐF. This means a true dormant season โ lawns and most perennials slow significantly from December through February. Contractors experienced in Zone 9b know to schedule irrigation shutdown before first frost, design planting schemes around the zone's long dry summers, and recommend drought-tolerant species that handle both the heat and the occasional cold snap. Ask any contractor you hire whether their plant selections are rated for Zone 9b minimums.
4 Licensed Landscapers in KNIGHTSEN
Aj's Landscaping
Licensed 2011 ยท 14 years in business
Corporation ยท Contra Costa County
License #966319
Status: CLEAR โ
Artistic Landscape
Licensed 2019 ยท 7 years in business
Partnership ยท Contra Costa County
License #1052964
Status: CLEAR โ
Modern Oak Landscaping
Licensed 2023 ยท 3 years in business
Sole Owner ยท Contra Costa County
License #1104392
Status: CLEAR โ
Machado Landscape Design
Licensed 2008 ยท 17 years in business
Sole Owner ยท Contra Costa County
License #919830
Status: CLEAR โ
(925) 634 0676
License valid through Jul 2026 ยท expiring soon
$25,000 bond ยท Nationwide Mutual Insurance Company
KNIGHTSEN Landscaping Market at a Glance
- 4 hold a current, clear CSLB C-27 landscaping licence in KNIGHTSEN
- 2 (50%) carry active workers' compensation insurance
- 1 (25%) are incorporated (Corporation or LLC)
- 2 have been licensed 10+ years
- Average time in business: 10 years
Beyond Landscaping: Specialty Licenses in KNIGHTSEN
Some KNIGHTSEN landscapers also hold additional CSLB classifications โ useful when a project spans trades like drainage, concrete, or pools.
- 1 also hold Swimming Pool (C53)
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 โ 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 KNIGHTSEN winterize irrigation systems?
Yes. KNIGHTSEN sees a real frost season, so experienced contractors schedule irrigation shutdown before first frost and choose cold-hardy plant material rated for the local winter lows.