What is an ADU? A Complete Guide to Accessory Dwelling Units

Types of ADUs: Which One is Right for You?

There are several types of ADUs, each offering unique benefits depending on your space, budget, and needs. Here are the most common ADU house ideas:

• Detached ADUs (Backyard Cottages): Also called backyard cottages, granny flats, laneway houses, or DADUs, depending on the jurisdiction, these are freestanding units separate from the main house, providing complete privacy and flexibility.

A freestanding unit separate from the main house, providing complete privacy and flexibility. These units function as small independent homes with their own kitchen, bathroom, and living space. Ideal for rental income, guest houses, or multi-generational living, detached ADUs are a great option for homeowners with sufficient yard space.

• Attached ADUs (Home Extensions): A built-on addition to the main home that provides additional living space while maintaining direct access to the main house. This option is ideal for aging parents, adult children, or live-in caregivers. Attached ADUs offer convenience and affordability, as they can share utilities with the primary residence.
• Garage Conversions ADUs: Transforming an existing garage into a livable space is one of the most cost-effective ADU solutions. Since the structure is already in place, construction costs are often lower than building a new unit. Garage conversions are perfect for homeowners who no longer use their garage for parking and want to repurpose it into an office, rental unit, or guest suite.
• Basement ADUs: A basement conversion can turn an underutilized space into a fully functional apartment. Since the foundation and walls already exist, basement ADUs can be an affordable option. They work well for rental income, student housing, or extended family accommodations. Proper lighting, ventilation, and waterproofing are essential for a successful basement ADU.

Each type of ADU has its own set of zoning and construction requirements. Consulting Accessory Dwelling Unit Builders can help determine which option best suits your property.

Why Build an ADU? Key Benefits for Homeowners

Building an ADU provides multiple advantages beyond just extra living space. Here are the key benefits:

• Additional Rental Income: Renting out an ADU can provide homeowners with a steady income stream, making homeownership more affordable.
• Housing for Family Members: ADUs offer a great solution for elderly parents, adult children, or guests, ensuring privacy while keeping loved ones close.
• Increasing Property Value: Homes with ADUs typically have higher resale values, making them a solid investment.
• Sustainable and Affordable Housing: ADUs contribute to sustainable urban development by utilizing existing land more efficiently.

These benefits make ADUs an attractive option for homeowners looking to optimize their property’s potential.