ADUs: Accessory Dwelling Units

ADUs are a secondary dwelling unit with complete independent living facilities for one or more persons. Up to 1200 Sq.ft of additional space can be added to your home with an ADU. They are an innovative, affordable, effective option to increase the value and space of your home. Today, ADUs are known by different names: granny unit, granny flat, in-law unit, in-law cottage, mother-in-law apartment, sidekick home, laneway home, backyard guesthouse, backyard cottage or secondary dwelling unit. ADUs are affordable in California as they do not require paying for land, major new infrastructure, structured parking, or elevators. Furthermore, ADUs can provide an additional source of income for homeowners.

We serve all types & forms of ADUs

Detached
Attached
Repurposed
ADUs
JADUs
Multifamily

GROW YOUR SPACE WITH AFFORDABLE OPTIONS

We have expertise and experience in the ADU space and have helped many of our clients by transforming their current house into their dream space with ADU additions. Each ADU we create is custom built and tailored to your specific needs by our trusted team of engineers.

ADUs Update

New California ADU Bills AB68, SB13, AB881, AB670 have passed. These new laws create more flexible options for building an ADU.

Connect with us to learn more about your options.

Ready to Get Started?

Get high quality ADU engineering plans on-budget and in a quick turnaround time. Our scalable engineering resources enable building design projects to be completed faster, and our years of experience ensures quality work that results in quicker building permit approvals. We also practice “value engineering” best practices which helps our customers save on construction costs.

Featured Projects

Addition and Interior Remodel

San Jose, CA

Additions & Interior Remodel

Oakland, CA

Interior and Exterior Remodel

Morgan Hill, CA

New Custom Home

Castro Valley, CA

LEARN MORE ABOUT ADUS & JADUS

Pre-Approved ADU Plan: Good or Bad

ADUs (sometimes known as secondary dwellings) are compact, attached or detached homes located on the same property as the primary residence. Pre-approved

How to Build an ADU – The Complete Guide

Adding an extra dwelling unit to your house is an excellent way to increase your living space. Auxiliary apartments are inexpensive housing for independent

Want to Build an ADU? Here’s Everything You Need to Know

Accessory Dwelling Units (ADUs) are fondly called in-law units, secondary units, granny flats, backyard cottages, etc. Whatever you call them, ADUs have

WHAT OUR CLIENTS ARE SAYING

"I have used Design Everest for several houses and the experience has been great each time. They have a team of designer, architects, structural engineers, and project managers to make sure things are constantly being completed and moving forward. Their guidance and experience helped navigate through issues before they arose, bringing our dream into reality. I will recommend Design Everest to anyone looking to complete the plans of their dreams quickly with a team of experts at a reasonable price."

"It's probably one of the few firms you can fully trust in the Bay Area. I got referred by a friend to Design Everest for a kitchen and bathroom remodel of my condo. They sent an architect to map out the current conditions of our house. The architect was very patient as we took our time to go through the plans, and he also suggested which complemented the way we wanted to remodel our home. They completed the plans within two weeks, and overall it was a very satisfying process. We are very happy to go with Design Everest. We will surely go with them if we need any engineering work in the future!"

"Design Everest provided timely and accurate Mechanical and Plumbing drawings which were approved by the local jurisdiction the first time they were submitted. This was a short-notice commercial permit which made timing even more crucial, and they came through big time for us."

"When I found Design Everest on the web, I sent a short email and had a response immediately. They took the time to explain the process of designing and structural engineering. This was my first project and had a ton of questions and got all of my questions answered. I will use them on future projects!"

"We worked with a designer, a PM, a structural engineer, and a Title 24 expert from Design Everest to design an ADU. Their close coordination allowed us to remotely design a custom ADU during the coronavirus epidemic. They were patient and allowed the design to iterate many times"

"I ordered an engineering report for a real estate transaction for the foundation portion of inspections. Great company, easy scheduling, great report that was complete and concise. The engineer reported on the foundation as well as the structure itself. Highly recommend."