ADVERTISING DISCLOSURE: BeforeInsuranceUSA.com is an informational directory, not an insurance agency, broker, or licensed producer. We do not sell insurance or provide insurance advice. No agent-client relationship is created by using this site. Except where a listing is clearly marked Featured, no agent listed on this site has paid for their listing. Featured listings are paid advertisements. This is an advertisement.

Find Commercial Insurance Agents Near You in Diamond Bar, CA

Browse commercial insurance agents serving Diamond Bar, California. Updated 2026-07-14.

The top-rated commercial insurance agent in Diamond Bar, California is John Lam - State Farm Insurance Agent, rated 5.0 stars across 413 reviews. Other highly rated options include KCAL Insurance Agency (Diamond Bar) | 華興保險, Patrick Lau - State Farm Insurance Agent, AAA Diamond Bar Insurance and Member Services. This directory lists 16 commercial insurance agents serving Diamond Bar.

Showing 16 commercial insurance agents in Diamond Bar, CAListings are displayed in no particular order and are not ranked. Order does not constitute a recommendation or endorsement.

Comparison

Top 10 listings
#NameAddressPhone
1John Lam - State Farm Insurance Agent1470 Valley Vista Dr Ste 209(909) 259-9996
2KCAL Insurance Agency (Diamond Bar) | 華興保險1139 S Diamond Bar Blvd #A(909) 573-0703
3Patrick Lau - State Farm Insurance Agent3333 S Brea Canyon Rd STE 110(909) 598-1899
4AAA Diamond Bar Insurance and Member Services2843 S Diamond Bar Blvd(909) 444-0299
5Tita Guzman - State Farm Insurance Agent1200 S Diamond Bar Blvd UNIT 212(909) 348-0444
6Topco Insurance1397 S Diamond Bar Blvd(909) 860-7770
7Short Stop Insurance Agency, Inc556 N Diamond Bar Blvd Suite 210(909) 396-8020
8Trucking and Business Insurance Services LLC1370 Valley Vista Dr Suite 200(949) 691-1361
9MEA & Associates Insurance Services3333 S Brea Canyon Rd STE 215(909) 895-7104
10Sky Vision Insurance Agency21680 Gateway Center Dr #110(877) 728-8688
JL
1470 Valley Vista Dr Ste 209
John Lam - State Farm Insurance Agent
Commercial Insurance Agent · Diamond Bar, CA

John Lam - State Farm Insurance Agent serves the Diamond Bar, California area with professional commercial insurance services. The agency assists local business owners in managing their operational risks through appropriate coverage options tailored to various industries. As an independent agent affiliated with a prominent national carrier, the office helps clients evaluate liability, property, and other essential protection needs. Common policies addressed include general liability insurance and workers’ compensation coverage for small to medium-sized businesses in the region.

KI
1139 S Diamond Bar Blvd #A
KCAL Insurance Agency (Diamond Bar) | 華興保險
Commercial Insurance Agent · Diamond Bar, CA

KCAL Insurance Agency (Diamond Bar) | 華興保險 provides a comprehensive range of commercial insurance agent services, including general liability, workers' compensation, and property coverage. Its service plans offer ongoing risk assessments and policy reviews to help businesses maintain appropriate protection levels. Regular maintenance plans ensure that coverage is adjusted as operations change. The company serves diverse properties, including single-family homes, apartments, retail locations, and restaurants, tailoring policies to the specific needs of each business type.

PL
3333 S Brea Canyon Rd STE 110
Patrick Lau - State Farm Insurance Agent
Commercial Insurance Agent · Diamond Bar, CA

Patrick Lau - State Farm Insurance Agent serves Diamond Bar and the surrounding communities in the San Gabriel Valley, handling commercial insurance needs for local businesses. It offers coverage options for various industries, including liability, property, and workers compensation policies designed to protect small to mid-sized companies. The agency takes a consultative approach, working with each client to assess their specific operational risks and tailor a policy that fits their budget. For a typical job, it analyzes the business's exposures and presents a few customized coverage plans for the owner to review.

AD
2843 S Diamond Bar Blvd
AAA Diamond Bar Insurance and Member Services
Commercial Insurance Agent · Diamond Bar, CA

AAA Diamond Bar Insurance and Member Services provides commercial insurance solutions tailored to local businesses in Diamond Bar, California. It works with small and mid-sized companies, helping them secure essential coverage such as general liability and property protection. Clients also access professional guidance on managing commercial risks unique to this region. The agency supports property managers as well, addressing their specific insurance needs. Its service area extends to the neighboring community of Walnut in the eastern San Gabriel Valley.

TG
1200 S Diamond Bar Blvd UNIT 212
Tita Guzman - State Farm Insurance Agent
Commercial Insurance Agent · Diamond Bar, CA

For businesses in Diamond Bar, CA, Tita Guzman - State Farm Insurance Agent assists with one-time policy setups for specific projects or recurring commercial insurance for ongoing operations. Coverage options typically include general liability and property protection tailored to local commercial needs. Claims support is available through the agency to help businesses recover from covered losses efficiently. Service is provided on an as-needed basis for policy modifications or new inquiries, with scheduled renewals arranged to maintain continuous protection.

TI
1397 S Diamond Bar Blvd
Topco Insurance
Commercial Insurance Agent · Diamond Bar, CA

Topco Insurance specializes in securing coverage for small and mid-sized businesses, such as liability, property, and workers compensation policies. It serves the Diamond Bar area with comprehensive commercial insurance options. The agency assists local companies in managing their unique risks, from retail shops to office complexes. As winter approaches, Topco helps business owners evaluate coverage for potential storm damage or liability from seasonal employee increases.

SS
556 N Diamond Bar Blvd Suite 210
Short Stop Insurance Agency, Inc
Commercial Insurance Agent · Diamond Bar, CA

As businesses in Diamond Bar prepare for wildfire season each fall, Short Stop Insurance Agency, Inc helps local operators secure adequate commercial coverage for their specific risks. The company specializes in commercial insurance agent services, working with clients to review liability, property, and business interruption needs. After identifying exposures through a detailed consultation, the agent schedules a physical inspection of the premises to confirm conditions before finalizing policy terms.

TB
1370 Valley Vista Dr Suite 200
Trucking and Business Insurance Services LLC
Commercial Insurance Agent · Diamond Bar, CA

Trucking and Business Insurance Services LLC, based in Diamond Bar, CA, provides commercial insurance solutions for businesses facing various operational risks. The agency focuses on general liability and property coverage while specializing in tailored policies for the trucking industry. Commercial clients can further add protections such as cargo insurance and workers’ compensation. In the local area, the agency serves a range of commercial sectors including offices, warehouses, and food service operations.

MA
3333 S Brea Canyon Rd STE 215
MEA & Associates Insurance Services
Commercial Insurance Agent · Diamond Bar, CA

MEA & Associates Insurance Services of Diamond Bar provides homeowners and renters insurance designed to protect residential property. The agency also offers a range of commercial insurance coverage tailored to meet local business needs throughout the region. Its agents work with clients to analyze risks and select appropriate policies from various carriers. After an initial policy is in place, the team typically contacts customers for an annual review. Regular follow-up between scheduled visits helps ensure coverage remains aligned with any changes in personal or business circumstances.

SV
21680 Gateway Center Dr #110
Sky Vision Insurance Agency
Commercial Insurance Agent · Diamond Bar, CA

Sky Vision Insurance Agency, based in Diamond Bar, California, is known for offering personalized commercial insurance guidance to local business owners. The company provides coverage options that protect against liability, property damage, and operational interruptions common in the region. It works closely with clients to assess their specific industry risks and secure appropriate policies from standard carriers. Contractors and retail operators in Diamond Bar benefit from tailored plans that address unique exposures. A specialty service it can add on is workers’ compensation insurance for small to medium-sized businesses.

DI
1340 Valley Vista Dr #200
DSG Insurance Services Inc
Commercial Insurance Agent · Diamond Bar, CA
(909) 396-9050
dsgpcins.com
WM
636 N Diamond Bar Blvd
Western Merchants Insurance Services Inc
Commercial Insurance Agent · Diamond Bar, CA
(909) 869-6150
westernmerchants.com/contact
LS
1930 S Brea Canyon Rd #115
Living Stone Insurance Services Inc.
Commercial Insurance Agent · Diamond Bar, CA
(909) 979-3713
livingstoneinsurance.com
CA
21671 Gateway Center Dr STE 110
CLAUDIAS AUTO INSURANCE AGENCY LLC
Commercial Insurance Agent · Diamond Bar, CA
(626) 494-2769
FO
1345 S Diamond Bar Blvd
FIRST OPTION INSURANCE
Commercial Insurance Agent · Diamond Bar, CA
(909) 612-0623
firstoptioninsure.com
CF
1249 S Diamond Bar Blvd UNIT 245
C&C Family Insurance Services
Commercial Insurance Agent · Diamond Bar, CA
(877) 520-2746
ccfamilyinsurance.com

What Does a a Commercial Insurance Agent in Diamond Bar Cost?

Typical costs for commercial insurance in California vary widely. A small business general liability policy may cost between $400 and $1,500 per year. Workers compensation premiums depend on payroll and industry class codes, often ranging from $1,000 to $5,000 annually for a small office. Larger risks or high hazard industries can cost significantly more. This is general information and not insurance advice.

About commercial insurance agents in Diamond Bar

Commercial insurance agents in Diamond Bar, California help business owners manage risks specific to the region, such as wildfire liability and earthquake exposure. California law requires certain coverages, including workers compensation insurance for most employers with one or more employees. A local agent can guide you through the California insurance code and find policies that meet your business needs.

Frequently Asked Questions

What types of commercial insurance are required in California?

California law requires workers compensation insurance for most employers. Commercial auto insurance is required if you have business vehicles. Other coverages like general liability are not legally required but are often mandated by landlords or contracts.

How do I choose a commercial insurance agent in Diamond Bar?

Look for an agent who holds a valid California insurance license and has experience with your industry. Ask about their familiarity with Diamond Bar specific risks such as earthquake zones and local fire hazards.

What information do I need to get a commercial insurance quote?

You will need your business type, annual revenue, number of employees, property details, and claims history. The agent will use this to assess risk and find appropriate coverage options.

Commercial Insurance Agents in Other California Cities

Listings are compiled from publicly available information. Inclusion does not constitute endorsement. Verify each commercial insurance agent's credentials and current standing with your state Department of Insurance.