If you’ve been researching ways to add extra living space or income to your property, you’ve probably come across the terms ADU and DADU. They sound similar (and they are!), but there are a few key differences that are important to understand before you start planning a project.

Let’s break it down in simple, real life terms so you can decide what might work best for your property, goals, and lifestyle.

What Is an ADU?

ADU stands for Accessory Dwelling Unit. It’s a legal, self-contained living space that’s located on the same lot as a main home. ADUs typically include a kitchen, bathroom, sleeping area, and a separate entrance.

But here’s the catch: ADU is an umbrella term. It includes both attached and detached units. So not all ADUs are DADUs but all DADUs are ADUs.

What Is a DADU?

DADU stands for Detached Accessory Dwelling Unit. It’s a specific type of ADU one that’s separate from the main house.

You might know them by names like:
– Backyard cottage
– Guest house
– Carriage house
– Laneway home
– Granny flat

It’s a stand-alone building think of it like a tiny home or small apartment that lives in your backyard.

ADU vs. DADU: What’s the Real Difference?

ADUs can be attached to your home like a basement apartment or converted garage. DADUs, on the other hand, are fully detached and sit elsewhere on the property.

Here’s a simple comparison to help you understand the key differences between attached and detached ADUs:

Feature	ADU (Attached)	DADU (Detached)
Location	Inside or connected to the main home	Freestanding unit elsewhere on the lot
Common types	Basement apartment, garage conversion	Backyard cottage or separate tiny home
Privacy	Shares walls or entry points	Fully separate ideal for privacy
Construction cost	Often lower (reuses existing structure)	Higher cost, but more flexibility
Design freedom	Limited by main home layout	Fully customizable floor plan and style
Rental appeal	Moderate (shared space concerns)	Higher (private entrance, separation)

Why It Matters

Understanding the difference isn’t just about terminology it’s about making the right choice for your situation, goals, and property.

>You might have more options than you think.
>Detached units often have higher rental potential.
>Each type involves different permitting and design steps.
>Each has pros and cons to weigh based on your property.

So… Which One Is Right for You?

Ask yourself:
– Do you need maximum privacy? → Consider a DADU.
– Do you want to convert a basement or garage? → An ADU may be easier.
– Have backyard space? → A DADU could be a smart long-term investment.
– Want a full custom build? → A DADU is your blank canvas.

Final Thoughts

Understanding the difference between ADUs and DADUs is the first step in making a smart plan for your property. Whether you’re dreaming of space for family, rental income, or just a little more breathing room there may be more possibilities than you think.

Curious what might work on your land? I’d love to help you explore the options. Just get in touch and we’ll walk through it together no pressure, just possibilities. Contact me HERE