Sin Hei Kwok is a Hong Kong-born architect, developer, and builder who has practiced in Hong Kong and Phoenix, Arizona. He is the founder of LOFTSPHX STUDIO, an architecture-led development practice focused on small-scale urban infill housing.

Working across architecture, development, and construction, Sin Hei takes an integrated approach to creating thoughtful multifamily housing. His work explores alternative housing typologies that introduce greater density while responding to the scale and character of established neighborhoods.

To date, Sin Hei has developed 22 ground-up residential units in Phoenix, with a new 27-unit infill development currently in planning. His work has been featured in publications including ArchDaily and Dezeen and recognized by AIA Arizona.

Sin Hei holds a Bachelor of Architecture from the University of Arizona and a Master of Real Estate Development from Woodbury University. He is a registered architect in Arizona and Hong Kong.