Craftsman-style home illuminated at dusk

Established 1995 · Pasadena

A trusted partner through
every step of the build.

Architecture, engineering, and construction management under one roof — so every project moves forward with clarity, consistency, and care.

Who We Are

Projects succeed when people feel informed, supported, and respected.

With over 30 years of combined experience, ATP Development & Construction was built on one simple belief — that the best outcomes come from clear communication and genuine accountability.

We work closely with homeowners, families, and investors across Los Angeles to transform ideas into well-executed spaces — from early planning and design through construction and final delivery. Our team brings architecture, engineering, and construction management together under one roof, letting us guide each project with clarity and consistency.

At every stage, we prioritize transparency and practical decision-making. Our goal isn't just to build structures — it's to help our clients move forward with confidence.

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ATP team members collaborating on a project

Our Approach

Built on experience.
Driven by accountability.

ATP was formed to bring clarity to a process that is often overwhelming, fragmented, and filled with uncertainty. Our leadership has spent decades across architecture, engineering, development, and construction management — seeing firsthand where projects break down when communication is missing.

By operating as a fully integrated team, we guide clients through complex decisions with foresight — reducing surprises, aligning expectations early, and keeping projects moving with purpose. Every project reflects our commitment to thoughtful planning and long-term relationships.

Leadership

Experienced leadership, hands-on at every stage.

Sergio Alvarez

Founder & Principal

Sergio founded ATP with a simple belief — projects succeed when people feel informed, respected, and supported. With decades of experience across development and construction, he remains closely involved in guiding clients through critical decisions and setting the standard for care, clarity, and execution on every project.

Al Penaranda

Managing Partner

Al brings extensive experience in construction management and operations, ensuring projects stay organized, transparent, and moving forward. As Managing Partner, he focuses on execution, coordination, and accountability — making sure clients experience a smooth, well-managed process from planning through completion.

Community Partnerships