YDS Architects

YDS Architects Architecture Design Firm. We design and permit Accessory Dwelling Unit (ADU), TOC Condos, and SB9. Contact us today for a free consultation.

YDS Architects is a leading architecture firm in Monrovia, California, specializing in ADU & multifamily residential architecture design. We guide clients through the entire process, from architectural design and building plans to obtaining building permits in Southern California. Whether you're looking for ADU, apartment building, and residential home design in Southern California our team of loc

ally experienced architects led by architect Yifu Pan, can help. We serve clients throughout San Gabriel valley area to Greater Los Angeles and Southern California offering architectural design services and expertise in permit expiditing for both residential and commercial architecture. Our services include:

- Architectural design from Monrovia, San Gabriel valley area, Greater Los Angeles to Southern California
- Apartment building design and permitting Monrovia, San Gabriel valley area, Greater Los Angeles to Southern California
- Building plans Monrovia, San Gabriel valley area, Greater Los Angeles to Southern California
- Design and permits Monrovia, San Gabriel valley area, Greater Los Angeles to Southern California
- Home design Monrovia, San Gabriel valley area, Greater Los Angeles to Southern California
- ADU design and permitting Monrovia, San Gabriel valley area, Greater Los Angeles to Southern California
- Architectural drafting Monrovia, San Gabriel valley area, Greater Los Angeles to Southern California

Have questions about modern home design in Monrovia or need an architect for restaurant design in Monrovia? We're here to answer your questions:

How much does an architect cost in SoCal? What permits do I need to remodel in Socal? YDS Architects, Your trusted local partner for architectural design and building permits in Monrovia and SoCal.

Residence M — Altadena RebuildClear volumes, California landscape, and a material palette that feels distinctly YDS: tea...
08/27/2026

Residence M — Altadena Rebuild

Clear volumes, California landscape, and a material palette that feels distinctly YDS: teal Hardie panel, warm terra-cotta stucco, and charcoal accents.

A new page for our Altadena rebuild work. Too bad we didn’t get the chance to feature this one in the rebuild competition.

We’re honored to be nominated by Volume Zero Architecture Competitions for the . Thank you for the recognition.This pro...
08/25/2026

We’re honored to be nominated by Volume Zero Architecture Competitions for the . Thank you for the recognition.

This project explores a leap toward autonomous architecture for extreme environments—combining modular design with aerial robotics to address the “sunlight and access” paradox of canyon-floor living.

Rather than forcing architecture onto a difficult site, the concept asks how architecture itself can become adaptive, deployable, and responsive to its environment.

We’ll be sharing more of the design process, diagrams, and ideas behind the project in the coming weeks.

By separating the building into layers, it shows how the massing, floor layout, circulation, and roof work together befo...
08/09/2026

By separating the building into layers, it shows how the massing, floor layout, circulation, and roof work together before the project is built. It offers a closer look at the planning behind the final design.

More to come at YDSArch.com.

Material selection plays an important role in defining the character of a project. Vertical wood siding, white and grey ...
08/07/2026

Material selection plays an important role in defining the character of a project. Vertical wood siding, white and grey stucco, perforated brick, and a restrained natural color palette work together to create a cohesive exterior while reinforcing the building's massing and proportions.

A palette developed to support the architecture, not compete with it.

For this project, the challenge was to maximize the buildable footprint within SB 684 and Culver City guidelines while m...
08/04/2026

For this project, the challenge was to maximize the buildable footprint within SB 684 and Culver City guidelines while maintaining efficient access across the site.

The design uses a combination of building forms, massing, and material transitions to shape the development while responding to the site's constraints. This approach accommodates four residential units, each with its own ADU and private garage, maximizing both housing capacity and the property's development potential.

More to come at ydsarch.com.

This proposal increases the property's development potential by transforming one residential unit into four residences, ...
08/02/2026

This proposal increases the property's development potential by transforming one residential unit into four residences, with each home paired with its own ADU and private garage.

Through a careful combination of materials, complex forms, and strategic planning, the design maximizes the site's potential while creating a cohesive residential development.

Swipe through to discover the ideas behind the design.

A shared courtyard pool sits at the center of the community, helping reduce the surrounding temperature through evaporat...
07/31/2026

A shared courtyard pool sits at the center of the community, helping reduce the surrounding temperature through evaporative cooling while creating a natural gathering space for residents.

Private side yards provide dedicated spaces for sunbathing and outdoor living, while the four-bedroom residences support communal living without sacrificing privacy.

Natural materials and a desert-inspired color palette reinforce the project's architectural character and respond to the Southern California climate.

More to come at ydsarch.com.

The fire was devastating, but in its aftermath, certain parcels in Altadena now have an opportunity to reimagine housing...
05/16/2026

The fire was devastating, but in its aftermath, certain parcels in Altadena now have an opportunity to reimagine housing through SB1123 and a more thoughtful, community-oriented density.

Our design proposal explores how new multifamily development can still preserve the character of Altadena. We retained the iconic front-facing gable roof as a tribute to the neighborhood’s architectural language, while transforming the upper roof area into accessible roof gardens and shared outdoor space.

We’re honored that this project received the “Most Collaborative Design” award in the Multifamily Category at the AIA Altadena Rebuild Competition.

More to come in the upcoming days.

The Ultimate Rooftop RetreatWhy settle for a backyard when you can have a private oasis in the sky? The Mariposa Complex...
04/25/2026

The Ultimate Rooftop Retreat

Why settle for a backyard when you can have a private oasis in the sky?

The Mariposa Complex features staggered rooftop terraces that offer every resident a slice of the outdoors with panoramic views. Whether it’s a morning coffee under the umbrella or an evening hosting friends above the treeline, these spaces are designed for the ultimate SoCal lifestyle. This is high-density living without the compromise. ✨

Big milestone in Monrovia 🎉Our project has officially received Conditional Use Permit approval from the City of Monrovia...
03/21/2026

Big milestone in Monrovia 🎉
Our project has officially received Conditional Use Permit approval from the City of Monrovia. From site planning to interior layout, this design brings new life to a local destination—home to Rigo’s Fiesta Mexican Food.

Excited to keep moving this one forward.

Address

177 N Primrose Avenue
Monrovia, CA
91016

Opening Hours

Monday 8am - 6pm
Tuesday 8am - 6pm
Wednesday 8am - 6pm
Thursday 8am - 6pm
Friday 8am - 6pm
Saturday 8am - 6pm

Telephone

+16266600206

Website

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