Accessory dwelling units (ADUs) have risen in popularity in recent years due to the additional space they provide and their ability to increase property value.

ADUs can be attached to a residential property, be an extension of it or serve as a stand-alone structure in the same lot. Either way, when planning to build an accessory dwelling unit for your home, you must choose between custom and pre-approved ADUs.

Custom vs. Pre-Approved ADUs

Custom ADUs are constructed according to your unique specifications and made to meet your needs. From the initial planning phase to construction and completion, this type of accessory dwelling unit is built and altered based on your requirements. Pre-approved ADUs, on the other hand, are constructed based on plans already designed and approved by the city.

Custom ADUs

When considering a custom ADU for your property, it is essential to understand its advantages and disadvantages to determine whether it is the right choice for you.

Pros

Here are some of the benefits of custom ADUs:

You work closely with the designer to build an accessory dwelling unit that meets your needs.
The finishing touches, such as fixtures, countertop finishes and other parts of the design, are all based on your style preferences.
A custom ADU can be designed to accommodate factors like privacy, space and strategic placement for better views.

Cons

Here are a few drawbacks of custom ADUs:

The project can take a significantly longer time to complete, especially during the design process.
It is not easy to estimate the cost of the whole project before it is complete.
Custom ADUs can cost more due to the design fees.

Pre-Approved ADUs

Pre-approved ADUs also have advantages and disadvantages you’ll want to consider before you choose between these two different ADUs.

Pros

Consider the following benefits of pre-approved ADUs:

Pre-approved ADUs take less time to complete, and the design fees are less costly than custom ADUs.
The designs are tested for performance and approved by the city.
You will have an accurate cost estimate before the project begins.

Cons

Pre-approved ADUs also have the following shortcomings:

You have to pick an existing design, which may require a few compromises on your part.
Making changes to the design may require additional costs and time.
You must ensure that the pre-designed unit aligns with regulations for ADUs in your specific area.

Trust Valley Home Builders for Your ADU Needs

At Valley Home Builders, we will help you turn your dream into a reality. From design to construction, you can rely on our expert team to build an accessory dwelling unit that meets your needs. Contact us to get started.