Accessory dwelling units (ADUs) are a versatile and affordable way to increase the livable space on your existing property. These permanent secondary living spaces (often called granny units or in-law units) are generally detached from the main home and can be designed to meet an array of needs and uses, from remote work and multi-generational housing to wellness and art studios. ADUs are typically between 500-800 square feet, but they can be built as large as 1,200 square feet. As experienced ADU contractors with over 27 years in the construction industry, Sightline Builders can help you create a beautiful custom ADU that will bring lasting value and enjoyment to your property.


Accessory dwelling units have become increasingly popular over the years, driven in part by the need for additional housing. This has also led to increased approval from planning and building departments, which has boosted their constructibility. ADUs are relatively straightforward to build, making it easy to have the new space you’ve been dreaming of.

ADUs have many benefits, including: 

  • Flexibility: Use your ADU as you see fit! It can be a private home office, a rental, a guest home, or even a home for elderly parents or caretakers.
  • Low environmental impact: Due to their smaller size, ADUs generally produce fewer emissions than most traditional single-family homes. Less space also means less electricity and water usage.
  • Improved infrastructure: ADUs increase your property’s occupancy levels, which can be a more viable solution for expanding households than finding a new place to live.
  • Convenience & communal living: Multi-generational families can stay close to each other while still enjoying the privacy of their own living spaces.
  • Additional income: If you choose to rent your ADU, it can be an excellent source of additional income.
  • Increased property value: Adding additional livable square footage to your property can often increase its value.

Although accessory dwelling units are often built adjacent to the primary residence, they can also be attached (such as an apartment above the garage) to better suit your needs.

Our Passionate ADU Contractors Bring Your Vision to Life

Whether you’re planning to use your ADU as a home office or a rental, our ADU contractors are dedicated to helping you bring your vision to life. We’re passionate about the details and stay on top of all the latest trends, from built-in storage space to high-tech smart devices. With decades of experience in remodeling, rebuilding, and renovation, our ADU builders will help you navigate all your options to create the perfect space you’ve always wanted.