Over the past decade, a new housing solution has taken the West Coast by storm: Accessory Dwelling Units (ADUs). These versatile, multifunctional structures have grown in popularity as they unlock solutions to some of today’s biggest challenges—affordable housing, multigenerational living, and even new income streams. With ADUs, homeowners are finding creative ways to maximize their properties while adapting to the changing needs of modern living.
What is an ADU?
An Accessory Dwelling Unit (ADU) is a secondary housing unit built on the same property as a primary residence. In Washington State, ADUs typically range from 300 to 1,000 square feet, and they come in two main varieties:
- Attached ADU (AADU):
Connected to the main home, sharing at least one wall. Examples include converting a garage, adding a second story, or expanding the back of a house.
- Detached ADU (DADU):
A standalone unit, separate from the primary residence, offering complete independence.
In Washington, homeowners can have up to two ADUs per property, configured as:
- Two AADUs.
- One AADU and one DADU.
- Two DADUs.
This flexibility allows homeowners to customize their properties to suit their specific needs.
What Are ADUs Used For?
Multigenerational Living
Did you know that over 60% of ADU installations are designed with multigenerational families in mind? ADUs strike the perfect balance between closeness and independence, making it easier than ever to keep loved ones nearby without sacrificing privacy.
Imagine providing a safe, comfortable space for aging parents or helping a young adult ease into independence while staying close to home. With rising housing costs in Washington, building an ADU is a cost-effective way to bring family together without breaking the bank.
ADUs are thoughtfully designed with self-contained living spaces that include private kitchens, bathrooms, and entrances. This setup allows families to share responsibilities, support one another, and still have the personal space they need. Whether it’s hosting Sunday dinners or finding a quiet corner to unwind, ADUs create the perfect environment for making lifelong memories while fostering independence.
A Source of Additional Income
Looking for a way to make your property work harder for you? ADUs are an excellent option for generating extra income, whether through long-term rentals or short-term hosting.
With housing demand skyrocketing in Washington, renters are willing to pay a premium for cozy, independent spaces like ADUs. Renting to long-term tenants provides a steady, reliable income stream that can help cover your mortgage, fund vacations, or bolster retirement savings.
If you prefer flexibility, short-term rentals on platforms like Airbnb or VRBO can deliver impressive returns, especially during peak travel seasons. Your ADU could welcome adventurers exploring Washington’s breathtaking landscapes or professionals seeking a temporary home base.
Beyond the immediate income potential, ADUs can significantly increase your property’s value, making it a smart investment for the future. Whether you’re using it now or selling it later, an ADU is more than an addition—it’s a game-changer for your financial future.
Extra Space for Anything You Need
Sometimes, a little extra space can go a long way. ADUs provide homeowners with a flexible solution for whatever life throws their way, from work and hobbies to hosting and storage.
Need a quiet home office to escape the chaos of remote work? Dreaming of a personal gym, art studio, or reading nook? An ADU can become the dedicated space you’ve always wanted. And when life evolves, so can your ADU—it’s the perfect guest house for visiting friends or family during the holidays.
An ADU can also help declutter your main home by offering additional storage for seasonal gear, keepsakes, or hobby supplies. With its adaptability, today’s home office could become tomorrow’s guest suite or even a rental unit.
The best part? An ADU isn’t just about adding square footage—it’s about creating possibilities. With an ADU, your home can grow, adapt, and meet your changing needs while adding charm, comfort, and value to your property.
ADUs are much more than just a housing trend—they’re a solution to modern living challenges. From providing affordable housing and multigenerational support to generating income and creating extra space, ADUs are helping Washington homeowners make the most of their properties. Whether you’re looking to invest in your future, support your loved ones, or simply expand your lifestyle, an ADU is the answer.