Every new California filing, every dayNew Businesses Filed in Diamond Bar, CA
180 newly registered businesses tracked in Diamond Bar, California. Browse by category or see the latest filings below.
Updated August 5, 2026 · Most recent filing Jul 31, 2026
180
Total Filings
19
Last 30 Days
20
Categories
Every new California filing, every day
See how it worksAbout New Diamond Bar Businesses
Diamond Bar, CA has 180 newly registered businesses in our database. 19 of those landed in the past 30 days. We refresh this page daily as new Diamond Bar companies appear in the California Division of Corporations records.
The most active industries in Diamond Bar are Holding Company (11), E-commerce (4), and Technology (4). Use the category list below to narrow the results to a single industry, or scroll down for the most recent filings of any type.
Every entry shows the business name, filing date, and category, plus verified owner and contact information where we have it. The latest Diamond Bar filing was on Jul 31, 2026. You can jump back to the full California view any time to compare Diamond Bar against other markets.
Business Categories
Holding Company11E-commerce4Technology4Medical Practice3Real Estate Investment3Home Health Care3Consulting3Manufacturing3Media Production2Other2
See all categories ›Recent Filings
K&L Construction & DesignVerified
Construction·DIAMOND BAR, CA
B&D Sales and ServiceVerified
Industrial Equipment Sales·DIAMOND BAR, CA
Forklifts GroupVerified
Material Handling Equipment·DIAMOND BAR, CA
Waynes Plumbing ServiceVerified
Plumbing·DIAMOND BAR, CA
Ti-Master & Sixweel USAVerified
Bicycle Parts Manufacturing·DIAMOND BAR, CA
Quark LA HVAC & ElectricalVerified
HVAC & Electrical Contractor·DIAMOND BAR, CA
Black Swan ConsultingVerified
Consulting·DIAMOND BAR, CA
SJT CreativeVerified
Marketing & Branding Agency·DIAMOND BAR, CA
RLX CoffeeVerified
Coffee Roaster & Online Store·DIAMOND BAR, CA
TJ Douglas ConsultingVerified
consulting·DIAMOND BAR, CA
Frequently Asked Questions
How many new businesses are registered in Diamond Bar, CA?
DayOneLead tracks 180 newly registered businesses in Diamond Bar, with about 19 added in the last 30 days.
How fresh is the Diamond Bar business data?
We refresh this page every day from the California Division of Corporations. The latest Diamond Bar filing we recorded was on Jul 31, 2026.
What are the most common new businesses in Diamond Bar?
The most active industries among new Diamond Bar registrations are Holding Company, E-commerce, and Technology. You can filter by any category to narrow the list.
What information is included for each Diamond Bar business?
Each entry shows the business name, filing date, and category, plus a verified owner name, phone, email, and website wherever we can confirm them.
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