Types of Accessory Dwelling Units: Choose the Perfect ADU for Your Property

An accessory dwelling unit (ADU) is an excellent addition to any Southern California property, providing versatile living spaces, rental income opportunities, and increased property value. With a plethora of ADU options available, selecting the perfect one may seem overwhelming. To help you navigate the decision-making process, we have highlighted some popular ADU types, alongside relevant factors such as functionality, space utilization, and construction costs.

Turnkey ADU is a trusted partner in Southern California, offering tailored ADU solutions that match your unique requirements, style preferences, and budget. Our proven expertise and dedication ensure that your ADU realizes its full potential, while seamlessly complementing your existing property.

We will provide insights into the unique characteristics and advantages of each ADU type, empowering you with the knowledge required to make an informed decision on the ideal ADU for your property. Leverage Turnkey ADU’s unparalleled experience and resources to turn your ADU dream into an impressive reality that enhances your home and lifestyle like never before.

Detached ADUs

Detached ADUs are standalone buildings separate from the main residence. This type of ADU offers maximum privacy and independence, making it an ideal choice if you plan to rent out the unit or want to provide a private space for extended family members. Some popular forms of detached ADUs include tiny homes, cottages, and modular units.

Building a detached ADU involves constructing from the ground up on a separate foundation. This allows for customizable floor plans and designs that cater to your specific requirements. However, it is essential to consider zoning and setback requirements, as well as additional utility connections that may affect the overall project cost. Partnering with Turnkey ADU, Southern California’s premier ADU builder, ensures that your detached ADU project adheres to local regulations and maximizes functionality, without compromising aesthetics.

Attached ADUs

Attached ADUs, as the name suggests, share a wall or section of the main residence. This type of ADU is a great option for homeowners looking to expand existing living spaces or create accommodations for guests or family members who require easy access to the main house. Attached ADUs often share utilities with the primary residence, which can help reduce overall construction costs.

Designing and constructing an attached ADU requires a thorough understanding of the existing home’s structure, layout, and systems to ensure seamless integration. Turnkey ADU’s team of experts collaborates with you, meticulously planning and executing the construction process to create a high-quality attached ADU that complements your current property both aesthetically and functionally.

Garage Conversion ADUs

A popular and cost-effective choice among Southern California homeowners is to convert an existing garage into an ADU. Garage conversion ADUs make efficient use of available space and effectively repurpose underutilized areas of your property. This option is also advantageous for properties where space constraints prevent constructing a detached or attached ADU.

Garage conversion ADUs require a carefully planned design that considers factors such as insulation, plumbing, and electrical systems to ensure a comfortable and functional living space. Turnkey ADU’s comprehensive approach to garage conversions evaluates these factors, delivering a finished unit that expertly marries form and function. With our guidance, transform your unused garage into a desirable living space, generating substantial rental income or providing a comfortable environment for your loved ones.

Interior Conversion ADUs

An interior conversion ADU involves converting an unused or underutilized area within your existing home into a fully functional independent living space. Common examples include transforming attics, basements, or extra rooms into ADUs. This alternative is perfect for homeowners looking to minimize construction costs while still reaping the benefits of an ADU.

Interior conversions come with unique challenges, such as ensuring adequate privacy, ventilation, and ingress or egress access. Turnkey ADU possesses the expertise and resources to navigate these complexities, guaranteeing that your interior conversion ADU meets all local and state requirements while meeting your expectations.


Choosing the ideal ADU type for your Southern California property is a multifaceted decision, requiring careful evaluation of factors like budget, available space, and intended use. Understanding the distinct characteristics of each ADU type is vital in making an informed decision that best serves your needs and goals.

Turnkey ADU is your trusted partner in this endeavor, offering unparalleled expertise and resources to help you plan, design, and construct the perfect ADU for your property. As your one-stop ADU builder in Southern California, rest assured that our team will guide you through every step of the process while prioritizing your satisfaction and project success. By partnering with Turnkey ADU, you can confidently create an exceptional ADU that caters to your unique vision and enhances your property like never before.

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