Differences Between Attached & Detached ADUs

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Accessory Dwelling Units (ADUs) are becoming increasingly popular as a way to add additional living space to a property. However, not all ADUs are created equal. One key difference between ADUs is whether they are attached or detached from the main residence. Attached ADUs are built as an addition to the existing structure, while detached ADUs are built as a separate structure on the property. Both types of ADUs have their unique benefits and drawbacks, and it's essential to understand the differences before deciding which kind of ADU is right for your property. In this article, we will explore the key differences between attached and detached ADU. So, continue reading to find out!

Maximum Size

Attached ADUs typically have smaller maximum size limits compared to detached ADUs. This is because they are built as additions to existing structures and must comply with zoning regulations for building size and setbacks. Detached ADUs, on the other hand, are freestanding structures and may have larger maximum size limits. Also, remember that it is essential to check with local zoning regulations for specific size limits for both attached and detached ADUs.

Construction Cost

Attached ADUs tend to have lower construction costs compared to detached ADUs, as they utilize existing infrastructure such as utilities and foundations. Detached ADUs require the building of new infrastructure and can be more expensive. Additionally, detached ADUs may require additional costs, such as grading and landscaping. It’s important to consider all costs when deciding between attached and detached ADUs and to consult with a contractor for an accurate estimate.

Potential Rental Earnings

Detached ADUs may have a higher potential rental income as they are separate living spaces and can be rented separately from the main residence. Attached ADUs may have a lower potential rental income as they may be considered part of the main residence. However, attached ADUs can also be used for other purposes, such as a home office or guest room which can increase the property’s value overall.

Parking Requirements

The parking requirements for attached and detached ADUs vary depending on local zoning regulations. Attached ADUs may have fewer parking requirements as they typically share parking with the main residence. However, detached ADUs may have more parking requirements as they are considered separate living spaces and require additional parking spaces. Also, it’s essential to check with local zoning regulations for specific parking requirements for both attached and detached ADUs.

Changes in Property Valuation

Attached and detached ADUs can have different effects on property valuation. An attached ADU may increase the property’s overall value. At the same time, a detached ADU may be considered a separate living space and may not have as much impact on the overall value. Additionally, zoning regulations and local market conditions can also affect the valuation of the property. However, it is best to consult a real estate professional to understand the potential impact on property value before building an ADU.

Final Thoughts

These are just a few key differences between attached and detached ADU. Understanding these differences can help property owners make an informed decision when considering adding an ADU to their property. Most importantly, consult a contractor like Nan Construction Inc or a real estate professional and check with local zoning regulations for specific requirements and guidelines for both attached and detached ADUs.

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