Decades of Partnership in Design

Founded on resourcefulness and driven by a commitment to our clients, API has been turning architectural ambitions into reality since 1982.

Explore our heritage

Our Approach

Your vision, our guidance

Our work starts and ends with you. We believe the most successful projects are born from a deep understanding of our client's needs, which is why every engagement begins with listening and learning. Headquartered in Modesto, California, we have grown to serve a diverse range of clients, including local businesses, national brands, and public entities across the U.S.

At API, we guide you through every stage of the architectural process, from Preliminary Design through Construction Administration. Our role is to provide expert counsel and navigate the complexities of design and construction on your behalf. We are proactive problem-solvers; when challenges arise, they aren't your problems to worry about—they are our problems to solve. This approach ensures a smooth, predictable process, freeing you to focus on the vision for your project.

While we bring decades of expertise to the table to recommend the best path forward, we always respect that the final decision rests with you. Our goal is to empower you to make informed choices that lead to outstanding results.

Why Partner with API?

Four pillars of our practice

Principal led projects

You will have direct, productive interaction with one of our firm's principals from start to finish.

A reputation for reliability

We are recognized for meeting project timelines and delivering clear, thorough plans that simplify the work of contractors and stakeholders.

Collaborative spirit

We have earned the respect of clients and builders alike for our helpful, cooperative approach to achieving results.

Inspirational, functional design

Our team is committed to creating spaces that go beyond meeting functional purposes to inspire the people who work in, live in, and visit them.

Our Leadership

The team behind your project

API Architecture is led by four principals who bring a combined 140+ years of experience to every project. Our team includes dedicated project managers, architects, and technical staff who work together to deliver exceptional results.

Joseph L. Smith, AIA

Principal Architect | President

Over 40 years of experience across office, medical, retail, and residential projects.

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Rodney C. Alonzo, AIA

Principal Architect | CEO

Over 40 years specializing in retail centers, office buildings, and recreational facilities.

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Brian Rosenberger

Principal Architect | Secretary

Over 40 years of hands-on experience across commercial, government, and school projects.

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Heidi Van Dyk, AIA | LEED AP

Principal Architect

Over 25 years of experience including 20 years in the public sector.

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Ready to Discuss Your Project?

Let's bring your vision to life

Let's talk about how we can assist you in achieving your goals and enjoying the process.