What is an ADU?

ADU is an abbreviation for Accessory Dwelling Unit. It has been referred to as a “casita”, “granny-flat”, “backyard home”, etc.

The process for building an ADU has just recently become easier, quicker, cheaper, and incentivized.

Potato Construction Inc. has the best team in the industry. We will not only build the ADU perfectly, but also make sure you will have the best experience with lower costs!


Why build an ADU?

Value Appreciation

Increase Your Home Value By up to 500K+

Rental Income

Net more than $3,000 a month from an ADU rental

Home Office

Work, Create, or Workout at Home Space adaptability for everyday activities

Family Members or Guests House

Flexible space for visitors, and be closer to family


Types of ADUs

Detached ADU

Garage Conversion

Attached ADU

Detached ADU + JADU

Detached ADU

A stand-alone structure separate from the primary home. A detached ADU can be built as entirely separate unit or constructed over an existing accessory structure, such as a detached garage.

Garage Conversion

Convert your garage into living space – can be one of the quickest and most affordable ways to add usable space to a home.

Attached ADU

These additions adjoin the primary home – to the side or rear of the home, or constructed on top of an attached garage.

Detached ADU + JADU

An JADU may be permitted inside a proposed detached ADU (“The accessory dwelling unit may be combined with a junior accessory dwelling unit”). Junior accessory dwelling unit” means a unit that is no more than 500 square feet in size and contained entirely within a single-family residence

Project Timeline

We’ve reimagined the ADU process to save you time and money, without sacrificing customization or quality.

Understand
what’s possible

Provide feasibility with CITY requirement.

Meet with us

1. Contract
2. ADU layout
3. Contract

Planning Department/
Building Department

1. Layout for approval. 
2. Submit to planning Dept. for approval.
3. Prepare full set of plans.
4. Submit to Building & Safety Dept. for approval.

Construction Phase

1. Site PREP
2. Demolition
3. Foundation
4. Framing
5. Roof

6. MEP
7. Exterior
8. Finishing
9. Final Inspection


Designed ADU to fit your space.
Customizable to fit your lifestyle.

Frequently Asked Questions

What is an ADU?

An ADU (Accessory Dwelling Unit) is a secondary, self-contained living space built on the same lot as an existing home, also known as a granny flat, casita, or backyard home. It has its own kitchen, bathroom, and entrance.

How much does it cost to build an ADU in San Gabriel Valley?

Every ADU is different, so cost depends on size, design, and finishes. Potato Construction provides a free, no-obligation quote so you know your exact investment before committing. Call (626) 777-6666 to get started.

Do I need permits to build an ADU?

Yes. ADUs require permits, and the process can vary by city within San Gabriel Valley. Potato Construction manages design and permitting for you, so you don’t have to navigate city requirements on your own.

How long does it take to build an ADU?

Timelines vary by project scope, but Potato Construction’s streamlined process is designed to save you time compared to a typical build, from design and permitting through final inspection. We’ll give you a realistic schedule during your free consultation.

Can I rent out my ADU?

In most cases, yes. ADUs are commonly used as rental units, guest houses, or space for extended family. Local zoning and rental rules can affect specific use, so it’s worth discussing your goals with Potato Construction during your free consultation.

Does Potato Construction handle the entire ADU process?

Yes. Potato Construction manages the full process, from initial design and permitting through construction and final inspection, so you have a single, licensed and insured team accountable from start to finish.