Building an Accessory Dwelling Unit (ADU) is a significant investment that provides great value. We understand that prospective homeowners need clarity on the financial details. As leading ADU builders and ADU contractors, we believe in complete transparency. Here is a breakdown of what to expect from the key cost drivers in your ADU construction project.
Cost Breakdown: What to Expect When Building an ADU

Essential Costs: Planning, Permits, and Design
The initial cost phase covers essential services like architectural design, engineering plans, and securing necessary permits. We manage this crucial step to ensure compliance, minimizing surprises later. This phase is non-negotiable for a successful build, and choosing the right ADU construction services here sets a solid foundation for the overall budget of your project.

Site Preparation and Utility Connections
Site work includes preparing the land and establishing utility connections, which can vary based on your property’s existing infrastructure. We meticulously assess the site conditions and manage any required excavation or grading early on. This preparation ensures a smooth build and allows us to provide an accurate and affordable adu cost to build estimate for the structural phase.

Structural Shell: Framing, Roofing, and Siding
This phase involves constructing the physical structure—the framing, roofing, windows, and exterior siding. The materials chosen here greatly influence durability and the final adu construction timeline. As dedicated adu contractors, we source high-quality components to guarantee longevity and energy efficiency, optimizing this significant portion of the total investment.

Interior Systems and Custom Finishes
The final costs revolve around the interior, including electrical, plumbing, HVAC systems, and aesthetic choices like flooring and cabinetry. We guide our clients through selecting finishes that balance budget and style, ensuring the ADU feels like a true extension of your home. These final choices are where we demonstrate how we are truly affordable adu builders.
Understanding the financial journey of an ADU makes the process less daunting. From initial plans to final finishes, we manage every detail to deliver exceptional results. Edri Construction provides trusted ADU construction services and clear communication every step of the way. If you are ready to explore your options or need a detailed estimate, we encourage you to contact our expert team.
