ADU Construction Services by Edri Construction, Inc. in Mill Valley
Edri Construction, Inc. is a Bay Area general contractor that specializes in full-service accessory dwelling unit construction. Based in Mill Valley, they manage ADU projects from initial design through to the final walkthrough. Their team is familiar with the specific zoning regulations and permitting requirements of the Bay Area, which can be a significant hurdle for homeowners navigating the process on their own.
An ADU can serve a variety of purposes — housing a family member, generating rental income, or providing a dedicated workspace. Edri Construction works with homeowners to identify the right type of unit for their property and budget, whether that's a detached ADU, a garage conversion, an attached addition, or a junior ADU (JADU).
Types of ADU Projects They Handle
Edri Construction offers several distinct ADU construction paths depending on the homeowner's goals and property layout:
- Garage Conversion Contractor: They convert underutilized garages into fully functional living spaces. This includes structural modifications, insulation upgrades, foundation work, and interior finishes to meet residential building codes.
- Detached ADU Builder: For homeowners wanting a standalone backyard cottage or Casita, Edri Construction handles everything from site preparation and utility trenching to foundation work and final finishes. These units are built as turnkey structures with full design flexibility.
- Attached ADUs and Additions: They also integrate new living spaces directly onto an existing home's structure. Their team assesses load-bearing capacity and matches exterior details — siding, roofing, and trim — so the addition blends with the original property.
- In-Law Suite and Granny Flat Builder: For multi-generational households, they design accessible living spaces suited for aging parents or adult children. This includes practical features like wider doorways and stepless entries.
As an ADU contractor, Edri Construction coordinates all subcontractors and manages project details in-house. This integrated approach is intended to reduce communication gaps and maintain consistent quality control throughout the build.
Design, Planning, and Sustainable Building
The process begins with a feasibility study and design consultation. Their architects work to maximize usable space within the allowable footprint while ensuring compliance with local regulations. They also handle permit applications and documentation on behalf of the homeowner.
Interior design is treated as an important part of the overall project. Edri Construction focuses on intelligent layouts that make smaller spaces feel functional and comfortable, incorporating quality materials for kitchens, bathrooms, and living areas.
Energy efficiency is also part of their building approach. They construct ADUs using advanced insulation, energy-efficient windows, and eco-friendly materials. Options such as solar-ready roofing and tankless water heaters are available for homeowners interested in reducing long-term utility costs.
Throughout the project, dedicated project managers keep clients informed on progress, timelines, and budget. Edri Construction positions itself as a full-service ADU builder for Bay Area homeowners looking for a managed, end-to-end construction experience.
