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Accessory Dwelling Units (ADUs)

Is an ADU home addition right for you?

The City of Seattle allows most homeowners to build two accessory dwelling units (ADU) on the same property as their home. Homeowners can combine different ADU types depending on the size and shape of their property:

  • Both ADUs can be attached or internal to the existing living space (AADUs).
  • There can be one AADU and one detached ADU (DADU).

An ADU is not just an opportunity to increase the value of your property. It’s an opportunity to get the most out of your home — supporting your family’s longevity in a single place or offering new financial freedoms when moving is the best option. 

ADU Types

Benefits of ADUs

Build Community

Provide a unique housing opportunity for a new neighbor.

Bolster Your Investment

Increase the value of your property.

Supplement Your Mortgage

Rent out your ADU for additional monthly income.

Maximize Your Space

Make sure your family has room to grow.

Get a consult on your property.

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Start adding to your home today.

There are two types of ADUs: attached accessory dwelling unit (AADU) and detached accessory dwelling unit (DADU). Both types must be established through a permit process.

It’s important to understand the value an ADU can bring to your property at any stage in life. As depicted by the graphic below, ADUs may accommodate older folks who are aging in place, teenagers who need more space, or young professionals seeking affordable rent.

Start adding to your home.

There isn’t as much space in Seattle as there used to be — that’s why it’s important to use yours as efficiently as possible.

If you want to learn more about how to get the most out of your property, give us a call today! We’re one of the few real estate agencies in Seattle that focuses exclusively on the ADU market.

The first step is requesting a free preliminary analysis from Urban Cottage. We’ll take an online snapshot of your lot and determine which custom solution would work best for you given your indicated resources and space.

Still in the market for a property with ADU potential or an existing unit? As a specialized real estate agency, we’re also here to answer any questions you may have while shopping.

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