Home Decor

What Is an Accessory Dwelling Unit?

What is an accessory dwelling unit? An ADU is a second residence on the same property as an existing home. It typically has its own entrance and features a complete kitchen. Living in an ADU can add value to your home, provide an income stream, and allow you to age in place.

Have you ever thought about the possibility of home additions with a second dwelling? Find out all that an accessory dwelling unit can do for you by reading our in-depth guide below.

History of ADU

The history of accessory dwelling units dates back to ancient times when they were commonly used as servants’ quarters or guesthouses. In more recent history, the ADU interior guide had been used as a way to provide affordable housing options in desirable neighborhoods.

With the rise in popularity of tiny homes and the desire for more flexible living arrangements, ADUs are once again gaining popularity as a housing option.


An accessory dwelling unit definition, or ADU, is a small living space that is typically attached to or based on the same property as a single-family home. ADUs can provide many benefits to homeowners, such as additional income from rental income, extra living space for family and friends, and increased safety and security.

ADUs can also help to increase the value of a home and create a sense of community.

Costs of Accessory Dwelling Units

ADUs are often added to existing homes or built as part of new home construction. The costs of accessory dwelling units vary depending on the size and features of the unit but can range from $20,000 to $200,000.

In some regions, there may also be restrictions on the construction of ADUs, which can affect the cost.

Types of ADU

There are two main types of ADUs: attached and detached. Attached ADUs are typically built as an addition to an existing home, while detached ADUs are freestanding structures.

ADUs can provide much-needed additional living space for families, aging parents, or adult children. They can also be rented out if you’re hoping to generate income.


One of the biggest risks associated with ADUs is increased traffic and congestion. If an ADU is rented out to tenants, there will be more cars coming and going from the property, which can lead to problems with parking and traffic congestion. More people living on the property can also lead to increased noise levels and other nuisances.

Another risk to consider is the impact on building property values. While an ADU can add value to a property by providing additional rental income, it can also decrease the value of the property if it is not well-maintained.

Getting an Accessory Dwelling Unit

An accessory dwelling unit is a great choice to add extra living space to your home. They can be used as a guest room, granny’s flat, or even a home office. Know the risks, types, benefits, costs, and history of ADU.

If you’re thinking about adding an accessory dwelling unit to your home, contact your local planning department to see if it’s allowed in your zoning.

If you found this article useful and want to learn more about digital living, check out our other posts for more informational content!

Also read:

Expert Tips on How to Convert Your Garage Into an ADU

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