+1-562-972-9831

Young Trio
Designs

Design your next happy place!

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ADU Plans That Pass Review and Build Beautifully

We design ADUs, garage conversions, and additions with a builder’s mindset, so your plans are practical, code-aware, and ready for city submission.

Clear Plans. Clean Layouts. Confident Builds.

ADU Design Services

Blueprints and building plans created in collaboration with contractors, designers, and engineers—built for real-world construction.
Consultation
We start with a short call to review your property, your goals, and your timeline. You’ll get real answers about what’s possible—and what’s not.
Design & Planning
We create a fully custom or semi-custom ADU design based on your needs. We handle site planning, design development, and all the documentation needed for permit approval.
Permitting
We manage the entire city submittal and plan check process—including Title 24, engineering coordination, and revisions—until your permits are approved.
Construction Oversight
Once permits are in hand, we connect you with our partner builder and continue to oversee the process. We review schedules, help troubleshoot issues, and stay involved to ensure the project finishes on time and on budget.

Before and After

A Family agency since 1982

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The future of smart builds

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loyalty as a core value

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Connecting With The Client is Our Starting Point

City bungalows, hillside studios, garage conversions—you name it, we’ve designed and built it. Plain-English Process Clear pricing, clear timeline, clear next step—always. Family-First Mindset We understand the stakes: aging parents, growing kids, mortgage offsets. Your priorities guide every decision.

This Is What We Do

This Is What They Say

Greg is the best designer in town. I trust him and so should you."
Mark Mcmanus
Mark McmanusLong Beach, CA
“I was overwhelmed by the entire ADU process, but greg and his team handled everything.”
Mikayla Macgregor
Mikayla MacgregorHuntington Beach
“I trusted them and they trusted me. It was an easy decision to give Young Trio Designs the ownership of building my ADU and Yes, It was a success.”
Rick Sampson
Rick SampsonCerritos, CA

you are in good hands

BUILD YOUR NEXT HAPPY PLACE

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