Every new California business filing, every dayNew Construction Businesses in Diamond Bar, CA
1 construction businesses recently registered in Diamond Bar, California.
Updated September 28, 2026 · Most recent business filing Jul 31, 2026
Every new California filing, every day
See how it worksAbout Construction Businesses in Diamond Bar
This page lists new construction businesses registered in Diamond Bar, California. We currently track 1, sourced directly from the California Division of Corporations and refreshed daily as new construction companies file.
Recent additions include K&L Construction & Design. The most recent construction business filing was on Jul 31, 2026.
Each entry shows the filing date and, where we can verify it, the owner name and contact details. If you sell to construction businesses in Diamond Bar, this is one of the freshest prospect lists in the market.
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