Square Three Inc. (CSLB Lic#1075734) is a California-based design-build construction firm offering end-to-end project delivery — from acquisition and design consulting to full-scale general contracting and trade execution.


With decades of combined experience in residential and mixed-use development, our team provides integrated solutions that balance design innovation, cost efficiency, and timely delivery. We bring together architects, engineers, and builders under one roof to streamline coordination and reduce project risks.


At Square Three Inc., we deliver value-driven, transparent, and scalable construction solutions — turning concepts into reality with precision and integrity.


Our Services


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Customer Testimonials



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