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Local Trusted Builders

Serving Pasadena, Altadena, and Greater Los Angeles — We delivers full-service residential, multifamily, and commercial building solutions from concept to completion.

Start Your ProjectView Our Work
Craftsman-style single-family home with front porch and landscaped walkway.

Let Us Do the Heavy Lifting

From planning and permitting to construction and final completion — we handle the details so you don’t have to.

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Development & Consulting

Feasibility, budgeting, planning, permitting — we set your project up for success.

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Full-Service Construction

From foundation to finishes, we manage the entire build with craftsmanship and care.
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Acquisition & Planning

Real estate evaluation, due diligence, and development strategy tailored to your goals.

Our Services

Custom Home Construction

Ground-up builds for luxury and hillside properties across Pasadena and the Greater LA area.

ADU Design & Development

From city permitting to final inspection — complete ADU solutions that add value and livable space.

Commercial Projects

Full-scale construction for retail, office, and multifamily developments, managed from start to finish.

Architectural & Engineering Design

Collaborate with ATP’s in-house and partner architects for efficient, code-compliant designs.

Permitting & Expediting

Navigate complex regulations with ATP’s experienced permit coordination team.

Project Management

Comprehensive oversight to ensure budget, timeline, and quality targets are met.

Free Consultation
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Let’s Build Your Vision Together

Speak with our team today and take the first step toward your new home or development project.

Your Trust Experts

Meet the Team Behind ATP

Portrait of Sergio Alvarez, Founder of ATP Development & Construction.

Sergio Alvarez - Founder of ATP

Passionate about empowering local communities through construction and development. Over 30 years of experience leading high-value residential and commercial projects.
Portrait of Al Penaranda, Managing Partner at ATP Development & Construction.

Al Penaranda - Managing Partner

Focused on precision, efficiency, and craftsmanship — ensuring every ATP project exceeds expectations.

The numbers speak for themselves

30+
Years Experience
650+
Projects Completed
300+
Clients

Our Projects

From hillside projects to large-scale multifamily developments — explore our recent work across Los Angeles and Pasadena.

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What Our Clients Say

Hear from homeowners and developers who trusted ATP for their residential and multifamily projects.

“Incredibly knowledgeable and relentlessly hardworking — I can’t recommend them more.”

ATP helped navigate everything from home renovations to complex commercial development. They truly care about clients and collaborators.

★★★★★
Alex Ashbaugh,
Google review

“First-class supervision and craftsmanship on our 13-unit build.”

ATP served as GC and delivered beyond scope. Integrity, attention to detail, and real ownership — a rare and valuable trait. Highly recommend.

★★★★★
Ben Rocca,
Google review

“Rare to find someone so transparent and genuinely dedicated.”

Thanks to Sergio and the team for professionalism, sincerity, and client-first support throughout the process.

★★★★★
Dexter C.,
Google review

“High-quality work that exceeded my expectations.”

Professional, reliable, and clear communication. The team kept us on schedule and made the entire process smooth and stress-free.

★★★★★
Luis Bañuelos,
Google review

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