Real Projects,
Real Results

Los Angeles homeowners and developers trust 121 Design Build to turn ideas into profitable realities. From unlocking rental income with ADUs to maximizing property value with SB9, our clients see tangible returns on their investments. These stories highlight what’s possible when design, permits, and construction support come together under one roof.

Frequently Asked Questions

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What makes 121 Design Build Inc. different from other design/build firms?
Are you licensed architects, or a design/build service?
How is 121 Design Build Inc. different from a traditional architecture firm?
Does 121 Design Build Inc. provide construction services?
Can I use my own contractor with 121 Design Build Inc.?
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