Landscaping contractor (C-27) in Ontario, CA

7 licenses · checked Oct 27, 2026

There are 7 Landscaping contractor (C-27) licenses with an address of record in Ontario, CA, in the CSLB License Master data checked Oct 27, 2026. That is 0.4% of the 1,864 such licenses statewide; Ontario ranks #68 of 481 CA cities for this license type. They are spread across 3 ZIP codes; the most common are 91764 (3), 91762 (3), 91761 (1). Most list San Bernardino County. By business type: Sole Owner 4, Corporation 3. The median first-issue year is 2017; the oldest license dates from 2015. 3 of them come up for renewal or expiration in the next 12 months, so re-check status before you sign a contract.

What a Landscaping contractor (C-27) license covers

Landscaping (C-27) covers building and installing landscape systems: grading for planting, irrigation, low-voltage lighting, walkways, patios, decks and fences that are part of a landscape job.

Note: Routine gardening and lawn mowing generally isn't CSLB-licensed work; installing irrigation, hardscape or structures is. Under California's minor-work exemption, jobs under $1,000 (labor and materials combined) that need no building permit generally don't require a CSLB license.

How to verify a license

Enter the license number in CSLB Instant License Check and confirm the status is active, the classification matches the work, and the contractor has a current bond and workers' compensation coverage (or a valid exemption). California requires the license number on contracts and advertising. Official lookup: CSLB Instant License Check.

Landscaping contractor (C-27) licenses in Ontario

Showing 7 of 7, A to Z. Listing order is alphabetical, not a recommendation.

Frequently asked questions

How many Landscaping contractor (C-27) licenses are in Ontario?

7 active licenses in the CSLB License Master data checked Oct 27, 2026 (0.4% of CA).

What does a Landscaping contractor (C-27) license cover?

Landscaping (C-27) covers building and installing landscape systems: grading for planting, irrigation, low-voltage lighting, walkways, patios, decks and fences that are part of a landscape job.

How do I verify a Landscaping contractor (C-27) license in Ontario?

Enter the license number in CSLB Instant License Check and confirm the status is active, the classification matches the work, and the contractor has a current bond and workers' compensation coverage (or a valid exemption). California requires the license number on contracts and advertising. Use the license number shown here with the CSLB Instant License Check.

Does every job in this trade need a license?

Routine gardening and lawn mowing generally isn't CSLB-licensed work; installing irrigation, hardscape or structures is. Under California's minor-work exemption, jobs under $1,000 (labor and materials combined) that need no building permit generally don't require a CSLB license.

How many Ontario Landscaping contractor (C-27) licenses expire soon?

3 of 7 have an expiration date in the next 12 months. A license that lapses must be renewed before the holder can work under it again.

Other license types in Ontario

General building contractor (45) · Electrical contractor (C-10) (31) · General engineering contractor (16) · Painting contractor (C-33) (13) · HVAC contractor (C-20) (13) · Plumbing contractor (C-36) (10) · Low-voltage contractor (C-7) (9) · Drywall contractor (C-9) (6) · Tile contractor (C-54) (4) · Cabinet and finish carpentry contractor (C-6) (4) · Flooring contractor (C-15) (3) · Concrete contractor (C-8) (3)

All Landscaping contractor (C-27) licenses in CA →

Source: CSLB License Master. Licensed California is independent and not affiliated with the licensing agency. Data checked Oct 27, 2026.