As more Tacoma homeowners look for ways to add value and flexibility to their properties, Accessory Dwelling Units (ADUs) have become a popular solution. But one common question is: What’s the difference between an ADU and a DADU—and which one should I build?
Let’s break it down.
What is an ADU?
An ADU, or Accessory Dwelling Unit, is a smaller, self-contained living space built on the same lot as a single-family home. It includes everything needed for independent living: a kitchen, bathroom, bedroom, and private entrance. ADUs are typically attached to the main house—like a converted basement, attic suite, or side addition.
ADUs are ideal for:
- Homeowners with limited yard space
- Creating a private unit for a family member
- Generating rental income without building a new structure
- Improving home value by making use of existing square footage
What is a DADU?
A DADU, or Detached Accessory Dwelling Unit, is a completely separate structure—think backyard cottage or garage conversion. DADUs are fully independent buildings located elsewhere on your lot, o
ffering more separation and privacy.
DADUs are great for:
- Properties with larger backyards or alley access
- Hosting long-term tenants or guests without shared walls
- Increasing property versatility and appeal
- Creating a true “home away from home” setup for family
Which Option Is Best for Your Lot?
The right choice often comes down to your property layout and your goals.
- Smaller lots or those without much yard space may be better suited for an attached ADU, especially if you have a basement or unused portion of your home.
- Larger lots or corner and alley-access lots are often perfect candidates for a detached unit.
- If you value privacy or plan to rent the unit out, a DADU can offer more separation between you and the occupant.
- If you’re looking for a lower-cost build or want to use existing space, an attached ADU may be more efficient.
The good news? Tacoma’s zoning now allows up to two ADUs per property, giving homeowners more options than ever to maximize their space and increase value.
Ready to Explore Your Options?
Tacoma DADU is a full-service ADU & DADU builder serving Pierce County. We’ll take a look at your property and design a custom ADU to fit your property and your needs for extra space. From there – we handle permitting, planning, construction, and everything in between. From brainstorming your space, to handing you the keys – we do it all.
With the new House Bill HB1337, condo’ing the property is a huge return on investment. Holding the DADU is absolutely valuable, but now you can condo and sell it separately from the existing home. It brings instant equity and allows for more home sales at a more affordable price. It’s just another benefit to building a DADU on your property.
If you’re in the Tacoma area and are interested in exploring your ADU/DADU options – give us a call or fill out our form right here to get in touch! We’re happy to discuss, educate, and explore how we can maximize your Pierce County property potential.
