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Accessory Dwelling Unit

Ready to build your ADU? 
Contact us today for a free consultation, and let’s discuss how we can bring your vision to life.

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Maximize the value and functionality of your property with a custom Accessory Dwelling Unit (ADU) built by Four SD Construction, San Diego’s trusted ADU contractor. ADUs, also known as granny flats, casitas, or backyard cottages, are a smart and versatile solution for creating additional living space, generating rental income, or accommodating family members. Our team specializes in designing and building high-quality ADUs that meet local regulations and exceed your expectations.

With San Diego’s increasing demand for housing, an ADU is not just an investment in your property—it’s an investment in your future. Whether you’re looking for a standalone unit, a garage conversion, or a home addition, Four SD Construction has the expertise to bring your vision to life.

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Why Choose Four SD Construction as Your ADU Contractor?

Building an ADU requires careful planning, specialized knowledge, and a contractor you can trust. Here’s why homeowners across San Diego choose Four SD Construction for their ADU projects:

ADU Expertise

We have extensive experience designing and building ADUs that comply with California’s regulations and San Diego’s zoning requirements. Our team stays up-to-date on the latest ADU laws, ensuring a smooth approval process.

Custom Designs

Every ADU we build is tailored to your specific needs and preferences. Whether you want a sleek, modern design or a cozy, traditional layout, we’ll create a space that fits your vision and enhances your property.

Turnkey Services

We handle every aspect of your ADU project, from initial design and permitting to construction and final inspections. With our end-to-end solutions, you can enjoy a hassle-free experience.

High-Quality Craftsmanship

Our skilled team uses premium materials and proven techniques to deliver ADUs that are durable, functional, and aesthetically stunning.

Transparent Communication

We prioritize clear and consistent communication throughout your project. You’ll always know what to expect, with regular updates and detailed timelines.

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Types of ADUs We Build

At Four SD Construction, we offer a variety of ADU options to suit your property and lifestyle:

1. Detached ADUs

A detached ADU is a standalone structure built on your property. These units provide maximum privacy and flexibility, making them ideal for rental income, guest accommodations, or home offices.

2. Attached ADUs

Attached ADUs are connected to the main house, sharing at least one wall. They offer a more integrated solution while still providing a separate living space for family members or tenants.

3. Garage Conversions

Turn your unused garage into a fully functional ADU. Garage conversions are a cost-effective way to add living space without increasing your home’s footprint.

4. Basement ADUs

If your home has an unfinished basement, we can transform it into a stylish and functional ADU. Basement conversions maximize underutilized space and add significant value to your property.

5. Above-Garage Units

An above-garage ADU makes use of vertical space, combining convenience with privacy. These units are perfect for creating a rental property or a private guest suite.

6. Junior ADUs (JADUs)

Junior ADUs are smaller units (up to 500 square feet) that are typically converted from an existing bedroom or living space. JADUs are an excellent option for homeowners looking to add affordable housing without major construction.

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Benefits of Building an ADU

A well-designed ADU can significantly boost your home’s resale value. In San Diego’s competitive real estate market, an ADU is a highly desirable feature. Renting out your ADU provides a steady source of passive income, helping you offset your mortgage or increase your savings.

ADUs offer versatile living spaces for a variety of purposes, such as housing for aging parents, adult children, or guests. By making use of existing land and resources, ADUs are an eco-friendly solution to San Diego’s housing challenges.

Compared to building a larger home or relocating, an ADU is a more affordable way to add living space to your property.

Our ADU Design and Build Process

At Four SD Construction, we’ve streamlined the ADU construction process to ensure efficiency, transparency, and exceptional results. Here’s how we bring your ADU project to life:

Step 1: Consultation

We start with a free consultation to discuss your goals, budget, and property layout. Our team provides expert advice on ADU types, sizes, and features that align with your vision.

Step 2: Site Assessment

We conduct a thorough assessment of your property to determine the best location and layout for your ADU. This includes evaluating zoning requirements, utility connections, and site access.

Step 3: Custom Design

Our design team creates a custom plan for your ADU, including:

  • Floor plans and layouts
  • Exterior and interior design
  • Energy-efficient features
  • Material selection

We also provide 3D renderings to help you visualize the finished space.

Step 4: Permitting

Navigating permits and approvals can be complex, but we handle it all for you. Our team works with local agencies to ensure your project complies with San Diego’s ADU regulations.

Step 5: Construction

Once the permits are approved, our skilled builders get to work. We manage every aspect of construction, including:

  • Foundation and framing
  • Electrical and plumbing systems
  • Interior finishes and fixtures
  • Landscaping and outdoor features

Step 6: Final Inspection and Handover

Before completing the project, we conduct a final walkthrough to ensure everything meets your expectations. Your satisfaction is our top priority.

ADU Regulations in San Diego

San Diego has embraced ADUs as a solution to the region’s housing shortage. Here are some key regulations to keep in mind:

  • Size Limits: Detached ADUs can be up to 1,200 square feet, while attached ADUs are limited to 50% of the main home’s size.
  • Setbacks: ADUs must meet specific setback requirements, typically 4 feet from side and rear property lines.
  • Parking: Many ADUs are exempt from parking requirements, especially if they’re near public transit.
  • Zoning: ADUs are permitted on most residential properties, but specific zoning laws may vary.

At Four SD Construction, we navigate these regulations for you, ensuring your project complies with all local laws.

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ADU Regulations in San Diego ​

Serving All of San Diego

From the vibrant neighborhoods of Hillcrest and North Park to the coastal communities of La Jolla and Carlsbad, Four SD Construction proudly serves homeowners throughout San Diego County. No matter where your property is located, we’re here to help you create the perfect ADU.

Start Your ADU Project Today

At Four SD Construction, we’re passionate about helping San Diego homeowners unlock the full potential of their properties with custom ADUs. With our expertise, dedication to quality, and commitment to customer satisfaction, we make the process seamless and rewarding.

Ready to build your ADU? Contact us today for a free consultation, and let’s discuss how we can bring your vision to life.