Build an ADU Now, Pay Later with Multitaskr. Generate monthly income with Multitaskr 100% ADU financing for qualifying homeowners. See If You Qualify

Why Multitaskr

Our Process

Quick Facts

Area of Coverage


Your trusted ADU contractor in Fullerton

If you're considering building an Accessory Dwelling Unit (ADU) in Fullerton, you can enjoy several benefits with Multitaskr.

Start Your ADU Project Today

Book a Free Consultation!

We're your one-stop-shop home solutions marketplace

Fullerton, California.



Persons per Household


Median Household Income


Average Property Value


We make Building your ADU in Fullerton simple and transparent.

Enjoy the benefits of rental income, reduced mortgage expenses, and increased property value with an ADU, while we handle financing, feasibility, design, permits and construction.

Our Simplified ADU Process.

We make ADUs easy so you can enjoy peace of mind!






We handle every aspect of your ADU from financing, feasibility, permits, and construction.

Why Choose Multitaskr as your ADU Contractor?

We are committed to providing you with an efficient and stress-free experience for your ADU project. We seamlessly integrate financing, architectural design, permitting, and construction to prioritize your needs. By working with us, you can take advantage of cutting-edge technology, such as virtual reality and artificial intelligence, to create a realistic visual representation of your ADU before we build it. Our ultimate goal is to revolutionize the ADU construction process, improve your satisfaction, and enhance your overall customer experience.

Multitaskr ADU Customers

Latest ADU Customers

Multitaskr purple home icon
Maximize your ROI with our 100% financed ADU models

Fullerton Quick Facts

Learn more about ADU potential in Fullerton, from population, median home prices, zoning regulations and rental potential.

Median Household Income


Fullerton Population*


*Source: 2023
Total ADUs built


Rental Potential for ADUs in Fullerton

All Accessory Dwelling Units located in Fullerton are authorized to be used as long-term rentals. Here’s how much you could potentially earn by renting out your ADU.

# Bedrooms
Average Rent

Run a comparative market analysis or consult a real estate agent to learn more about rent prices in your area.

Basic ADU Regulations in Fullerton

Thinking about constructing an ADU in Fullerton? Explore our comprehensive guide on ADU regulations specific to Fullerton, offering in-depth insights into the building code and prerequisites for various ADU types.

ADU Regulations
Max ADU Size:
1200 sq ft
Max height:
16 feet
4 feet
Two Story Allow:

Neighborhoods we cover in Fullerton

Artisan Walk, Downtown Fullerton, Santa Fe, SoCo, University Heights, West Coyote Hills

92831, 92832, 92833, 92835

Multitaskr purple home icon
Maximize your ROI with our 100% financed ADU models

Frequently Asked Questions

The following list of frequently asked questions on ADUs might provide the answers regarding financing, zoning feasibility, city regulations, site preparation and construction.

What is an ADU?

An Accessory Dwelling Unit (ADU) is an additional or secondary residential dwelling, either attached or detached, located on the same lot as the primary residence.

What types of ADUs are allowed to be built in Fullerton?

1) Detached: Are standalone structures separated from the main residence. 2) Attached: Are integrated into the primary dwelling. 3) Garage Conversion: Consists of turning an existing garage into a fully equipped living space. 4) JADU: Are independent units up to 500 square feet, located within existing homes.

How much time is required to plan, design, and construct an ADU?

The timeframe can fluctuate depending on various factors, such as the chosen design, construction process, and the scheduling availability of your builder.

What is the price range for an ADU?

The cost of an ADU can vary significantly, taking into account factors such as the ADU's dimensions, design, construction, and the expenses associated with materials and labor.

What are the reasons for considering an ADU as an investment?

Rental Income, Property Value Appreciation, Housing for Family, Friends, or Caregivers and, Opportunity for Downsizing within Your Community.

What are the financing options available for ADU construction?

An Accessory Dwelling Unit (ADU) can be financed through various means depending on your financial situation and preferences. Contact us today to discuss your options and find the best solution.

If you have any further inquiries, please contact us at [email protected] or give us a call at (619) 514-4023. We will be happy to assist you.

Five steps to simplify your homeowner experience

Streamline your ADU project in five stages.

Complete your ADU stress-free with Multitaskr


ADU Feasibility

Our team will help you understand the potential of your property and identify the best location for your ADU.


ADU Design

Design and experience in VR your new ADU, starting with the right floor plan, dimensions, and finish selection.