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Napa Valley Design Studio



Relax in Wine Country

Welcome to our St Helena design studio, located in wine country’s quintessential town for culinary delights, delicious vintages, and relaxing getaways. With many years of experience, Mosaic is ingrained in the local design and building community and specialize in wine country estates, homes, retreats, wineries and tasting rooms. 


To begin your customized design project tailored to wine country living, we’ll first visit your site and get to know each other.

Thoughtfully-Designed Spaces


Mosaic Architects & Interiors approaches every project with a fresh mindset. Our award-winning designs reflect varied architectural styles, highlighting individual requirements. 


To inspire and visualize your design project, we create inspiration boards, display 3-D renderings, and curate material samples to bring your design project to life. 


Let us effortlessly guide you through an experience of thoughtfully designed spaces that reflect your style and lifestyle.

Begin Your Custom Architectural  & Interior Design Experience

Speak to an award-winning designer about your project

We are located within two blocks off Main Street, walking distance to St. Helena's dining, downtown tasting rooms and shopping. Our design studio is within easy travel to Napa Valley, Healdsburg, Sonoma, Alexander Valley, Lake & Mendocino Counties.


By Appointment Only


1328 Stockton Street
St. Helena, CA 94574 


Homes featured in


Green & Gorgeous

Beautiful Interiors


"The most passionate, professional and personal group of innovative timeless architect and design work ever imagined. Thanks to the dedication, a true value as well. Created a priceless home for a lifetime, and worthy investment. If I didn't love this home so much we'd do it over and over with Mosaic."

Project: Home for a Potter, Traditional Project

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