Reliable ADU Design & Permits In SoCal​

Consult with licensed Master Architect Yifu Pan. Get expert ADU advice, custom design, project cost estimates, and ROI analysis. Secure your ADU plans, and permits with YDS Architects.
7 unit apartment building addition to an existing home through Senate Bill 9 two-unit development and ADU provision in Torrance South California by YDS Architects

ⓘ Architect Consultation fees (valued at $500!) waived for projects over 500 sqft

Let’s talk About Your ADU​

Share a brief detail of your project and we’ll conduct a feasibility study & property assessment for your architect consultation. 

Hear what others have to say...

Hear it from others:

”Love its design, modern and delightful, and customer-oriented! It’s easy to reach the team and the response appears quick and efficient. Great job, Yifu team, appreciate your great work!!”

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Mulan W

detached adu

”YDS demonstrated a thorough understanding of the local regulations and requirements, which greatly expedited the approval process, I didn’t have to talk to any consultants or building officials from start to finish.”

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GRACE S

permitting existing adu

”Yifu has done the fantastic job on my major project. He responds quickly and frequently contact to the city to make sure we are on the right track. I’ll definitely refer to my friends and family members.”

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SHANE T

home remodel

”I also went with Yifu. He and his team has been nothing but super helpful!

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Angeline T

garage conversion adu

Why work with YDS Architects

1

PLAN

We assess your property’s ADU potential, considering local codes, zoning, and structural factors that impact costs. Our architect collaborates with you to understand your vision, providing clear development options, design choices, and cost estimates to streamline decision-making.

3

PERMIT

We streamline the permit preparation process by collaborating with our network of vendors, including structural and Title 24. We handle the intricacies of various municipal departments, ensuring a smooth and rapid approval process. Our expertise extends to complex areas like Los Angeles, Riverside, and Orange County,

Introduction

What are accessory dwelling units?

Accessory Dwelling Units (ADUs) are small, self-contained living units that are typically located on the same property as a larger, primary residence. They are also known as in-law suites, granny flats, or backyard cottages. ADUs can be attached or detached from the primary residence and can be used to provide additional living space for family members or to generate rental income. They have become increasingly popular in recent years as a way to address housing shortages and provide more affordable housing options.

Affordable ADU Design

We believe that Accessory Dwelling Units (ADUs) can play a vital role in providing affordable housing options, and we’re passionate about making ADU design accessible to everyone.

PERMITTING SERVICES

We specialize in the ADU design and permitting process of ADUs, making it easy and stress-free for you. From concept to getting the permits, we’ll be your advocates  every step of the way.           

Your architectural project is a significant undertaking, but it does not have to be complicated. You just need to take the first step, we’re here to get you the help you need.

it all start with
an idea

Residential Projects

ADU • SB9 • Multifamily • Yard

Explore our recent projects, showcasing innovative designs and diverse solutions tailored to Southern California homeowners.

Latest ADU Resources​

This Labor Day, dream bigger for your home. Interested in adding extra space or income with an ADU in California? This beginner's guide covers financial benefits, design options, regulations, and real homeowner stories. Discover how ADUs can transform your home and create new possibilities for your family and community.
Discover how Accessory Dwelling Units (ADUs) are transforming Monrovia's housing landscape. Learn about the benefits, regulations, and design considerations for building an ADU on your property.
If you're intrigued by the potential of multigenerational living, contact Yifu Design Studio for a free consultation. Let's explore how design can make your dream of a multigenerational home a beautiful and functional reality.

Whether you're looking for a place to accommodate growing children, senior parents, or earn rental income, ADUs are a lucrative investment.

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