Types of ADU – Find Your Perfect Backyard Solution

Choosing among the different types of ADU starts with understanding your property, goals, and lifestyle needs. At Goshen Tiny Homes, we specialize in creating accessory dwelling units that maximize your space and investment. Whether you're considering an attached unit that extends your main home or a detached ADU and DADU that stands independently in your backyard, we'll help you select the perfect configuration for your property.

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Understanding ADU Types

Accessory Dwelling Units come in two primary categories, each offering unique advantages. The types of ADU you can build depend on your property layout, local zoning regulations, and how you plan to use the space. Let’s explore both main ADU types and their variations to help you make the right choice.

Detached ADU (DADU) – Independent Backyard Living

A Detached Accessory Dwelling Unit, commonly called a DADU, is a separate structure built apart from your main home. This is the most popular type among our clients at Goshen Tiny Homes, offering maximum privacy and flexibility.

What Makes a DADU Special:

Complete separation from the main house provides privacy for both residents
Independent entrance and utilities create true standalone living
Can be positioned anywhere on your property with proper setbacks
Ideal for rental income, multigenerational living, or guest accommodations
Maintains the character of your existing home without major renovations

Common DADU Configurations:

Backyard Cottage: A standalone home built in your backyard with its own yard space. Perfect for creating rental income or housing family members while maintaining everyone’s independence.

Converted Garage ADU: Transform an existing detached garage into functional living space. This approach often reduces costs and construction time while maximizing existing structures.

New Ground-Up Construction: Purpose-built from scratch, these DADUs offer complete customization in design, layout, and finishes. Our B Series and C Series models are designed specifically for this type of construction.

Above-Garage ADU: Built on top of an existing or new garage structure, this two-story solution maximizes space efficiency while maintaining ground-level parking.

Attached ADU – Seamless Home Extension

An Attached ADU connects directly to your primary residence, sharing at least one wall with the main home. This type offers convenience and often lower construction costs due to shared infrastructure.

Benefits of Attached ADUs:

Lower construction costs through shared walls and utilities
Easy access between units—perfect for caregiving situations
Faster permit approval in some jurisdictions
Efficient use of existing property footprint
Integrated design that complements your home’s architecture

Popular Attached ADU Options:

Basement Conversion: Transform underutilized basement space into a complete living unit. Ideal for properties with existing basements and proper egress options.

Bump-Out Addition: Extend your home’s footprint with an attached unit that projects from the main structure. Creates defined separate space while maintaining connection.

Second-Story Addition: Build upward to add living space without consuming yard area. Perfect for smaller lots where ground space is limited.

Garage Conversion: Convert an attached garage into living quarters. Often the most affordable attached option, though you’ll sacrifice parking space.

Attached vs Detached: Which ADU Type Is Right for You?

Choose a Detached ADU (DADU) if you want:

Maximum privacy for occupants and your family
A standalone rental with separate utilities for easier tenant management
Flexibility in unit placement across your property
To preserve your existing home without major renovations
The option to customize design independent of your main house

Choose an Attached ADU if you need:

Lower overall construction costs through shared systems
Close proximity for caregiving or multigenerational support
To maximize a smaller lot without using backyard space
Faster construction using existing home infrastructure
A cohesive look that blends seamlessly with your current home

Start Your ADU Journey Today

Ready to explore which types of ADU work best for your property? Goshen Tiny Homes makes the process simple, transparent, and stress-free. Whether you envision a detached backyard cottage for rental income or an attached suite for aging parents, we’ll bring your vision to life with expert craftsmanship and dedicated support.

Contact us today to discuss your property, explore our ADU types and floor plans, and receive a personalized cost estimate. Transform your backyard into a valuable living space with a professionally built accessory dwelling unit from Goshen Tiny Homes.

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Have Questions?

What's the difference between an ADU and a DADU?

A DADU (Detached Accessory Dwelling Unit) is a specific type of ADU that stands separately from the main home. All DADUs are ADUs, but not all ADUs are detached—some are attached to or within the primary residence. The term “ADU and DADU” simply distinguishes between attached and detached configurations.

Which type of ADU is more expensive to build?

Detached ADUs typically cost more than attached units due to the need for separate foundations, walls, roofing, and utility connections. However, detached units often generate higher rental income and provide greater flexibility, potentially offering better long-term value despite higher upfront costs.

Can I build more than one ADU type on my property?

Most jurisdictions limit properties to one ADU, though some progressive cities now allow both an attached ADU (like a garage conversion) and a detached DADU on larger lots. Check your local zoning regulations, and we’ll help you understand what’s permitted on your property.

Do different ADU types require different permits?

All ADU types require building permits, but the specific requirements may vary. Conversions (garage or basement) might have different structural considerations than new construction. Goshen Tiny Homes has experience with permitting across various ADU types and will guide you through the process.

Which type of ADU adds more value to my property?

Both attached and detached ADU types increase property value, typically by 20-35%. Detached units often appeal more to buyers seeking rental income potential, while attached units attract those prioritizing multigenerational living. The best choice depends on your local market and property characteristics.