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Callaghan Horiuchi

Architectural Designers

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We collaborate with our clients — we are thought-partners who engage early in the development process to help shape a project’s vision, not just its design.

Our strength lies in listening, not leading with a predetermined style, and in working with clients — whether owners or developers — as trusted advisors. We differentiate ourselves by operating upstream, bringing architectural expertise to strategic thinking, and developing design parameters that reflect both vision and practicality. With a foundation in cognitive science and a deep curiosity about how people experience space, our process is rooted in research, observation, and empathy.

Our approach is human-centered, focused on how people perceive and interact with their environment. We design for people, not for ourselves — responding to real needs and behaviors with humility and intention. For us, architecture is about asking the right questions, iterating thoughtfully, and applying the best knowledge and tools available to create spaces that create an experience. We believe the best outcomes come from co-creation, where clients are not just stakeholders but collaborators in shaping meaningful environments.

Feasibility

We begin by testing the viability of a project at the earliest stage. This includes exploring site conditions, zoning constraints, budgets, and program requirements to establish a foundation for decision-making. By analyzing opportunities and constraints, we provide clients with clarity on whether a project can move forward successfully and under what parameters. The result is a roadmap that balances vision with practical realities.

Programming & Strategy

Programming and strategy define the “why” and “how” of a project. We work with clients to transform broad ideas into measurable goals, ensuring all stakeholders are identified and engaged. This phase is about distilling the client’s vision into objectives that are both inspiring and achievable. We integrate data, user input, and scenario planning to create a framework that sets the stage for design excellence.

Concept Design & Design Management

During concept design, we synthesize the information gathered in strategy into creative solutions tailored to the project’s context and ambitions. The process is iterative and inclusive—testing scenarios, refining ideas, and aligning with the project’s goals.

As design managers, we assemble and guide the right team of collaborators, ensuring the client’s vision is carried through every stage of design and construction. This role includes acting as advisor, overseeing execution, and maintaining alignment of design intent with budget and schedule. 

Architectural Design

Our team provides comprehensive architectural services from schematic design through construction administration. This includes design development, construction documentation, bidding, and project oversight. At every stage, we balance creativity with technical expertise, ensuring the built project reflects the original vision while meeting financial and schedule constraints.

Interior Design

Interior design is treated as an extension of architecture, where we focus on the user experience of space. Our interiors balance aesthetics, functionality, and long-term adaptability. We design environments that support flexibility, embed identity, and enhance comfort - whether for residential, workplace, or hospitality projects. The goal is to create spaces that are not only visually compelling but also resilient and future-ready, able to evolve with user needs

Furniture, Furnishings and Equipment Design

Our FF&E design services focus on the essential elements that bring a space to life and shape the user’s day-to-day experience. We curate and specify furniture, finishes, and equipment that align with the project’s identity, performance goals, and budget.

This process goes beyond aesthetics—it ensures that every material and piece of furniture is durable, functional, and adaptable to future needs. We collaborate with clients to select items that reflect their brand and culture while balancing comfort, sustainability, and long-term value. From custom furniture solutions to integrated finish palettes, our approach creates cohesive environments that are both inspiring and practical.

Our Strengths

Ours is a human-centered design process informed by cognitive science and user research. We explore how people perceive and interact with their environments, applying research-driven insights to shape spaces that are responsive, functional, and meaningful. This approach allows us to design not just spaces, but experiences—environments that positively impact the people who inhabit them.

We lead with empathy and humility. Our work is driven by human experience, not by form or signature style. Each project is shaped by context, purpose, and the people it serves. We don’t believe in forcing a vision—we believe in uncovering one together with our clients and collaborators. The result is design that’s thoughtful, grounded, and impactful.

We bring curiosity and collaborative execution to every project. Our approach blends strategic thinking with deep respect for how things get built—working hands-on with fabricators, millworkers, and contractors to understand their processes and co-create smarter, more efficient solutions. Instead of prescribing, we ask questions. This spirit of partnership at every level fosters stronger relationships and better outcomes.

Services
FeasibilityProgramming & StrategyConcept Design & Design ManagementArchitectural DesignInterior DesignFurniture, Furnishing and Equipment Design

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Business details

Category:
Architectural Designers
Business focus:
Residential & Commercial
Verified ArchiPro member since:
2026
Award winning professional:
8 awards

Meet the Team

Christian Callaghan

Christian Callaghan

Partner

Haruka Horiuchi

Haruka Horiuchi

Partner