ACCESSORY DWELLING UNITS

FULL-SERVICE ADU DESIGN + BUILD

As a true design + build contractor, DFL eliminates the complexity of coordinating architects, engineers, and builders separately. Our streamlined approach allows us to deliver ADU projects faster, with fewer delays and greater cost control.

Our ADU services include:

• Site evaluation and feasibility analysis

• Architectural design and structural planning

• City and county permitting coordination

• Ground-up construction and garage conversions

• Final inspections and project close-out

We handle ADU projects across Los Angeles, Santa Monica, Culver City, Pasadena, Torrance, Redondo Beach, Manhattan Beach, Irvine, Newport Beach, Costa Mesa, Laguna Beach, Huntington Beach, and Inland Empire cities such as Riverside, Corona, Ontario, Rancho Cucamonga, and Redlands.

ADU TYPES WE BUILD

We design and construct all major ADU configurations, including:

• Detached ADUs

• Attached ADUs

• Garage conversion ADUs

• Junior ADUs (JADUs)

• Single-story and two-story ADUs

Each ADU is customized to your property, zoning requirements, and long-term goals while meeting all local building and safety codes.

SERVICE AREAS

DFL Design + Build provides Accessory Dwelling Unit (ADU) design and construction services throughout Los Angeles County, Orange County, and the Inland Empire. We work with homeowners across Los Angeles, Santa Monica, Culver City, Pasadena, Torrance, Redondo Beach, Manhattan Beach, and surrounding South Bay and Westside communities.

In Orange County, we regularly complete ADU projects in Irvine, Newport Beach, Costa Mesa, Laguna Beach, Huntington Beach, and nearby cities. Our team is also experienced with ADU permitting and construction across the Inland Empire, including Riverside, Corona, Ontario, Rancho Cucamonga, and Redlands.

Each city has unique zoning, permitting, and building requirements, and our local expertise allows us to navigate these regulations efficiently to keep your ADU project moving forward. If you’re located anywhere in Southern California and are considering an ADU, our team is ready to help.

FREE PLANS WITH OUR DESIGN + BUILD PACKAGE

When you move forward with our Design + Build service, your ADU plans are included at no additional cost. This means you avoid the expense and delays of hiring outside architects or engineers.

Our in-house team designs plans that are:

• Optimized for local permitting approval

• Aligned with your budget and timeline

• Tailored to your property layout and usage needs

This approach saves time, reduces risk, and ensures your ADU project stays aligned from day one.

ADU COST CONSIDERATIONS IN SOUTHERN CALIFORNIA

ADU construction costs can vary depending on:

• Size and layout

• Finish level

• Utility connections

• Site conditions

• Local city or county requirements

Our interactive project estimator below provides a helpful starting point, but for accurate pricing, we strongly recommend scheduling a personalized consultation so we can evaluate your property and goals.

WHY HOMEOWNERS CHOOSE DFL DESIGN + BUILD

• One-team accountability from design through construction

• Local expertise across Los Angeles County, Orange County, and the Inland Empire

• Transparent pricing and clear project timelines

• High-quality craftsmanship and premium materials

• Experience navigating complex Southern California permitting processes

We work with homeowners who value quality, long-term value, and a smooth construction experience — not shortcuts.

START YOUR ADU PROJECT WITH CONFIDENCE

If you’re considering building an ADU in Los Angeles, Orange County, or the Inland Empire, DFL Design + Build is ready to help you move forward with clarity and confidence.

Contact us today to schedule your personalized ADU consultation and take the first step toward expanding your property.

Our team of experts will work closely with you to design and build an ADU that meets your specific needs and preferences. We will consider all aspects of your property, including zoning and permitting requirements, to ensure that your ADU meets all necessary regulations.

Whether you want to create a separate living space for aging parents, provide a space for adult children or guests, or generate rental income, we can help you achieve your goals. Our ADUs are designed to be functional, comfortable, and stylish, with all the amenities necessary for modern living.

We use only the highest quality materials and employ skilled professionals who are dedicated to ensuring that your ADU is completed to the highest standards. Our construction process is transparent and efficient, with open communication throughout the project to ensure that you are completely satisfied with the end result.

At our construction business, we are committed to quality, safety, and customer satisfaction. We understand that building an ADU is a significant investment, which is why we offer competitive pricing and flexible financing options to make your project more affordable.

If you are considering an ADU for your property, contact us today to learn more about our ADU services and how we can help you achieve your goals.