An architecture studio for future environments.
CAHA [kä-hä] is an architectural design studio based in the California Bay Area, founded in 2018 by Casey Ramirez and Hallie Chen. With a core aim of creating contemporary spaces, our studio integrates our diverse backgrounds in design, construction, community development, art and ecology.

Casey Ramirez

is an interdisciplinary practitioner of built and beautiful things. Born and raised on a ranch in the Napa Valley, he later attended Cal Poly SLO and Rhode Island School of Design (RISD) where he honed his architectural and creative design skills. After graduating, he gained experience in the design and entitlement of public schools in California, and then with hands-on design/build residential and commercial building in Northern California, rural Idaho, and Philadelphia. In 2014 he returned to the Bay Area, working with a local design/build firm creating stunning residential spaces until founding Caha with Hallie in 2018. When not designing and making art, he can be found experimenting with fermentation and surfing or snowboarding around the North American continent most weekends.

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Hallie Chen

was born and raised in San Francisco.  While studying urban planning at UC Berkeley for undergrad, she discovered her interest in architecture as a means to create inspiring social spaces and as tool for progressive community development. After completing a Masters in Architecture from Harvard’s GSD, she spent time in upstate New York exploring the connections between ecology, farming and architecture.  Upon returning to the Bay Area she became an expert in commercial interior and office developments, before branching out to start CAHA. When not at our office or on-site, Hallie is a leader in youth design-build programs, bay area rock action and happens to be a pizza eater extraordinaire.

510 863 0012
Architecture and Design - translating your visions into a streamlined process.

Residential Building & Remodels

The spaces where we live and relax.

— single family homes
— remodel and additions
— adu
— multifamily
— project management

Commercial Projects & Tenant Improvements

Where we shop and play.

— tenent improvEment
— retail
— hospitality
— space branding
— interior design and custom fabrications

Development & Real Estate

Envisioning possibilities.

— site assessment
— project strategy and planning
— project management

Products & Installation

Custom Designs for Funiture or artwork.

— custom furniture
— site specific artwork
— conceptualization

Public Projects

This is a high level description of this service.







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Interested in collaborating?
contact us.