Hsu McCullough: custom residential design and development in California.

Hsu McCullough is a full service architecture studio based in Los Angeles specializing in custom home design rooted in comfort.  Led by principals Peggy Hsu, AIA and Chris McCullough, we envision and create exceptional places through a collaborative process with our clients.

Hsu McCullough’s meticulous approach offers thoughtful and elegant solutions for all budget and schedule challenges.  Our office engages every detail of the process that flows from initial project analysis through construction completion. A Hsu McCullough space reflects the personalities and lifestyles of our clients with a loyalty to natural light and an equal enjoyment of interior and exterior environments in all their many forms.



Peggy Hsu, AIA


Peggy received her Bachelor of Architecture degree from California State Polytechnic University, Pomona where she spent an year studying abroad in Copenhagen, Denmark. Prior to establishing Hsu McCullough, Peggy worked at several architectural and real estate development companies where she fully guided design and construction projects ranging from single family residences, executive suites in office buildings, mixed-use condominium developments, boutiques restaurants located throughout Southern California. Peggy is a licensed architect in California.

Chris McCullough


After receiving his Bachelor of Architecture degree from Carleton University School of Architecture in Canada, Chris’ career began in an architecture office in Osaka, Japan.  Later he worked for 12 years at well known design-build architecture firm in Los Angeles before forming Hsu McCullough, an idea born through the design and construction of their first home together with his wife Peggy Hsu.  Chris has over 20 years of architectural design experience with a specific focus on custom luxury homes as well as restoration of historic homes by architects such as Cliff May and Ray Kappe.

Soroush Sarang

Project Architect

A graduate of Cal Poly Pomona, Soroush’s command of design visualization along with incorporating the latest technology in project design and delivery provide integral success of each project.



More than 50 years’ combined experience


Over 160 proud homeowners living in Hsu McCullough designed homes


Over 40 publication features


Over 25 homes designed to co-exist with existing legacy trees: no trees sacrificed for “views”


Custom residential home projects completed since 2009


Worked in over in 36 jurisdictions (and growing)


Working with us

We work with homeowners to build their dream homes.

From assisting with finding the right plot to the finished home, our service is inclusive. So you don’t have to work out the details on your own.

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We celebrate the talented experts that we work with on all of our projects.

If you are a contractor, builder, developer, engineer, interior or landscape designer, photographer, videographer, or in another related field, and would like to work with us, get in touch.

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If you are interested in working at Hsu McCullough, and are a passionate and self-motivated individual with strong 3D visualization skills, please tell us about yourself.

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