Los Angeles County
Where Vision
Meets Structure
Decade-proven expertise in residential building design. Over 1,500 projects delivered across Los Angeles County — from custom homes and ADUs to additions, remodels, and small multi-unit residential.
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Years in Business
Projects Completed
County-Wide Service
Project Completion Rate
About the Studio
Built on a Decade
of Delivering
Design 1 Studio didn’t become one of LA County’s most trusted design firms by accident. For over ten years, we’ve been the team that owners, developers, and investors call when the project has to be done right — and done completely. We don’t walk away. We don’t hand off. We see every single project through from first concept to final approval.
While other firms come and go, we’ve remained a constant in this industry because we understand something fundamental: your project is your livelihood, your investment, your future. We treat it that way. With over 1,500 projects behind us, we bring the kind of experience that can’t be faked or fast-tracked.
We’re not a one-person operation working out of a spare bedroom. Design 1 Studio Inc. is a fully established, incorporated design firm with the track record, the expertise, and the staying power to prove it.
“We don’t start projects. We finish them.”
Our Work
A Decade of
Delivered Projects
From modern ADUs to Spanish Revival estates, every project reflects our commitment to thoughtful design and meticulous execution.
What We Do
Full-Scope Design
Services
From initial sketches to permit-ready construction documents, we handle every phase of the design process for residential projects throughout Los Angeles County — and we coordinate commercial interiors and permitting from first review to final approval.
01
Custom Home Design
Ground-up residential design for single-family homes, from modern minimalist to Mediterranean revival. Complete plan sets prepared for LA County permitting and construction.
02
ADU & Guest House Design
Pioneers in Accessory Dwelling Unit design since California’s landmark legislation. Garage conversions, detached units, and junior ADUs — we’ve done them all, hundreds of times over.
03
Duplexes, Triplexes & Fourplexes
Small multi-unit residential of up to four units. We understand density, zoning, and how to maximize value on every square foot of your lot. For larger developments, we coordinate the project team and manage the permit process.
04
Commercial Interiors & Permit Coordination
Nonstructural interior layouts, storefronts, and fixture plans for retail and office spaces. When a project calls for stamped plans, we coordinate the California-licensed professionals who prepare them and manage submittals through permit issuance.
05
Home Remodels & Additions
Room additions, second stories, kitchen and bath redesigns, and whole-home renovations. We seamlessly blend new construction with existing structures.
06
Permit & Plan Check
We prepare complete construction document packages and navigate the plan check process with LA County, City of LA, and surrounding jurisdictions. No surprises, no delays.
ADU Specialists
LA’s Most
Experienced
ADU Design Firm
When California passed its groundbreaking ADU legislation, most firms were scrambling to figure out the rules. We were already drawing plans. Design 1 Studio was among the very first to specialize in Accessory Dwelling Units, and we’ve been at the forefront of every regulatory update since.
From 400-square-foot junior ADUs to two-story detached units, from garage conversions to new construction — we’ve designed hundreds of ADUs across virtually every city and jurisdiction in LA County. We know the setbacks, the height limits, the parking exemptions, and the utility requirements inside and out.
2017
Designing ADUs Since
I00S
ADU Projects Completed
Our Process
Start to Finish
Every project follows our proven four-phase process — a system refined over ten years and 1,500+ projects to eliminate guesswork and keep your build on track.
I
Consultation
We listen first. Free initial consultation to understand your vision, evaluate your property, and discuss feasibility, budget, and timeline.
II
Concept Design
Preliminary layouts, site plans, and design concepts developed in close collaboration with you. We refine until it’s exactly right.
III
Construction Documents
Complete, permit-ready plan sets, coordinated with licensed structural, mechanical, electrical, and plumbing engineers where required. Ready for submission.
IV
Permit & Beyond
We submit, we handle plan check corrections, and we support you through construction. We don’t disappear after the plans are drawn.
Our Promise
This Is Not a Side Hustle
Design 1 Studio was built to last. We’ve been here for ten years, we’ll be here for ten more, and every project we take on gets the full weight of our experience and commitment. Period.
We Finish What We Start
100% project completion rate. Every project. Every time. We don’t abandon timelines and we don’t leave clients hanging.
We Know the Code
A decade navigating LA County’s building codes, zoning laws, and permitting processes. We know what gets approved and what doesn’t.
We’re Accountable
Incorporated. Insured. Established. We put our name on everything we produce because we stand behind the quality of our work.
Get Started
Let’s Build
Something
Ready to move forward? Whether you have a fully formed vision or just the seed of an idea, we’re here to help you develop it into a reality. Your first consultation is free.
Phone
Service Area
All of Los Angeles County
Availability
Mon – Fri, 8am – 6pm
Weekends by appointment