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Leading Design and Engineering
for ADU in San Jose California

ADUs are a secondary dwelling unit with complete independent living facilities for one or more person. 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.

Eligible Properties

  • Single-family lots that are 3,000 square feet or larger may qualify for an ADU.
  • Use the ADU Universal Checklist to learn about eligiblity, rules about location and size, and other development standards and requirements.


We provide the following services for all types of Accessory Dwelling Unit:

  • Detached: Detached Accessory Dwelling Unit is the Addition Spaces that are building not attached to the home but in your property area. These Detached ADU are many types of Tiny backyard home, Backyard Cottage, etc. Design Everest helps in design, Engineering, ADU permit process and construction administration support for your tiny backyard home or any detached ADU.
  • Attached: The unit is attached to the primary structure
  • Repurposed Existing Space: Space (e.g., garage) within the primary residence is converted into an independent living unit
Select Projects

Some of the Examples of Accessory Dwelling Units

Granny Flat

A granny flat is a self-contained living area for one or two persons usually located on the grounds of a single-family home. A granny flat can be detached and independent or it can be attached to the other dwelling. It is called a granny flat because it is a popular way for families to accommodate aging parents. Other terms include granny pod, mother-in-law unit, in-law apartment, bonus unit, casita, carriage unit, and ohana unit. Most granny flats fall into the tiny house category and the surge in interest in tiny house living.

As multigenerational housing becomes more accepted, granny flats are likely to become more prevalent. Realtors and builders report that they are already a good selling point.

Garage Conversions

Garage Conversion is a great way to increase your home’s value or increase the house living space and this new space can be used in a variety of ways. For homeowners adding a room is less cost efficient and stressful than having to sell their home and move to a bigger home. Design Everest can be helpful in helping you with the ADU design and ADU permit for your garage conversion into ADU and will help you navigate choices and decisions to find the balance of form, function, and budget.
Dominating the San Jose for the past decade Design Everest has accumulated years of experience and knowledge thus speeding up the process and successfully obtaining approval of our blueprints to perform garage conversion. Our team of Engineers, Designers, and Architects are well experienced and know all the city guidelines and limitations in any of our servicing areas.

Garage Conversions
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  • Architectural Plans for ADUs

    The first step of creating an ADU is to have an architectural plan. If you do not have a plan handy, we are happy to connect you with one of our trusted Architect partners in your area. Our partner architects specialize in various architectural styles and can create an Architectural Permit set for any design styles you have in mind.

  • Engineering Services for ADUs

    We have you completely covered when it comes to the engineering required for the ADU. Our engineers can take your ADU vision and iron out the details to ultimately create the ADU plans for construction. We then work with you across the ADU construction and oversee every step of the project.

  • Desing Everest
  • Desing Everest
Grow your space with affordable home additions through ADUs

We have huge 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.

Desing Everest
Desing Everest
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How it Works
  • Design Everest
    Free Consultation

    To start, a Design Everest associate schedules a consultation with you to fully understand your needs.

  • Design Everest
    Quick Turnaround

    Once we understand your needs, we deliver plans and structural engineering drawings for your project. We have quick turnaround time, with the option to track your project in real-time

  • Design Everest
    Easy Permit Process

    We will provide a set of drawings of the Accessory Dwelling Unit that you may submit to the city to obtain the required ADU permits. Our fixed fee includes addressing all city comments (if any) on our plans until the ADU permit is approved. Next, we can connect you with reputable ADU builders in your area, so you can get started with your ADU construction right away.

Why Design Everest?

We are a true one-stop architecture and s with expertise in a wide range of specializations in providing home ADU Services as listed above. Our experienced Engineers and Architect partners design efficient ADUs and are always looking for value engineering solutions so that customers pay less in construction, materials costs, etc.engineering in ADU service.

  • Highly experienced &
    value engineering

    We are a true one-stop architecture and engineering in ADU services with expertise in a wide range of specializations in providing home ADU Services as listed above in San Jose. Our experienced Engineers and Architect partners design efficient ADUs and are always looking for value engineering solutions so that customers pay less in construction, materials costs, etc.

  • Responsiveness and
    quick turnaround

    Unlike most firms, we leverage technology, and make every effort to get high-quality plans delivered in weeks -- not months. Hey, who said construction has to be painful?

  • Ability to take
    a project anytime

    Our proprietary data system ‘The Design Hub’ allows us to efficiently forecast and optimize our resources. This means our structural engineers in California can take on a project of any size at any time while maintaining quality and schedule.

Start your project with us today!
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