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About Us

Our Dual Roles: Inspired Design, Meticulous Preservation IS Architecture pursues two passions: creating beautiful, enduring homes in any style, and preserving historic structures. Our award-winning studio comfortably spans both worlds, offering inspired, timeless solutions whether clients are building anew or preserving the past. ABOUT: IS Architecture is a highly qualified award-winning firm dedicated to creating extraordinary homes and preserving our architectural heritage. Led by Architect Ione R. Stiegler, FAIA, our firm specializes in custom residential design with a unique expertise in historic restoration and the adaptive re-use of rare buildings. Our work encompasses all aspects of design, including aesthetics, building codes, and agency review, with solutions for technical, structural, and coastal challenges. VALUES: At IS Architecture, we follow this guiding principle: the purpose of architecture is to create buildings that are beautiful, enduring, and comfortable. We believe a home should be tailored to its owner as well as the setting, merging function and form. Scale and proportion are critical—both in the relation of the rooms to each other and the house to its environment. Our firm creates extraordinary, livable spaces that reflect each client’s unique preferences while maximizing the potential of the site or an existing structure.

Services Provided

Building Design, Custom Homes, Historic Building Conservation, Home Additions, Home Remodeling, Kitchen Design, Kitchen Remodeling, New Home Construction

Areas Served

Del Mar, Del Mar Heights San Diego, Hill Crest San Diego, La Jolla, Mission Hills San Diego, Ocean Beach San Diego, Point Loma San Diego, San Diego, Rancho Santa Fe, Muirlands, Fairbanks Ranch, Bird Rock, Sunset Cliffs


IS Architecture has won over 75 local and national awards for custom residential design, including a “Best in American Living” Home of the Year and a Gold Nugget Grand Award for Best Custom Home.) Our Houzz awards include Best of Houzz Design for 2016 and 2017.

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Business Details

Business Name

IS Architecture

Phone Number

(858) 456-8555


5649 La Jolla Blvd.
La Jolla, CA 92037

Typical Job Cost

$500,000 - 5 million

IS Architecture's projects are typically high-end major remodels and ground up construction in all areas of San Diego. Construction costs typically range from $500K - $5M. Architectural fees typically range from $50K - $500K. We also do a variety of other projects including kitchen remodels, additions.

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