Best Builders in Oakland, CA

Inspired ADUs, based in Oakland, CA, specializes in architect-designed Accessory Dwelling Units (ADUs) for homeowners across the Bay Area and Southern California. They offer a range of services including architecture, permitting, interior design, aging-in-place solutions, construction administration, and procurement, along with panelized and modular ADU options. Inspired ADUs provides flexible paths across design and construction methods to help clients create an ADU that reflects their lifestyle and long-term goals. They also offer services for SB9 lot splits, infill development, custom homes, renovations, and additions.

Nestadu, founded in Mill Valley, CA, aims to transform the residential construction experience for California homeowners. Frustrated by uninspired designs and cumbersome processes in the ADU market, the founders set out to offer superior solutions in ADUs, custom homes, and renovations. Nestadu blends innovation with precision to elevate craftsmanship in every project, focusing on thoughtful design and quality. They offer both custom site-built units and prefab modular options, prioritizing premium materials and efficient layouts. Nestadu is committed to client satisfaction, transparent pricing, and meticulous attention to detail, ensuring a smooth, hassle-free experience. Nestadu designs, permits, and builds high-quality ADUs for all budgets, backyards, tastes, and timelines. They manage every aspect of construction, from foundations to utility hook-ups, ensuring a seamless, stress-free experience. The company also handles the permitting process, from drawing submittal to communication with the municipality. Nestadu serves regions across California, including the Bay Area, Sacramento, Los Angeles, and San Diego. Nestadu's prefab ADUs include the Nest (starting from $115,000), Nest Studio (from $225,000), Nest One (from $263,000), and Nest Two (from $317,000). They focus on architectural integration, making them a go-to choice for homeowners who want cohesive backyard homes that feel like natural extensions of their primary residences. Nestadu is dedicated to delivering excellence, tailored to echo the unique aspirations of their clients. Nestadu is a top-rated ADU builder specializing in custom and prefab accessory dwelling units. They are committed to sustainable living by incorporating efficient building practices and eco-friendly materials. Nestadu also donates 10% of all profits to housing the homeless.

McDunn ADUs, based in Berkeley, California, specializes in the new construction of custom accessory dwelling units (ADUs) in the San Francisco East Bay Area. Originally McDunn Construction, the company has been based in Berkeley since 2011, building and remodeling homes throughout the area. Principal-owner Dan McDunn has two decades of experience in residential construction, ranging from production homebuilding to luxury condominium construction. Since transitioning to focus on ADUs in 2017, McDunn ADUs has completed over 50 ADUs, earning rave reviews from clients and architect partners. The company focuses on custom, detached ADUs in Berkeley, Albany, El Cerrito, Oakland, and Alameda. They have completed nearly two dozen ADUs ranging from multi-bedroom tiny homes and aging-in-place cottages to open-concept studio spaces and garage conversions. One of McDunn's projects won the Bay Area Remodeling Award for Best Detached Residential Structure from NARI in 2019. This single-story backyard cottage, in collaboration with Larson Shores Architecture, was designed to allow a grandmother to live with her family while maintaining independence. McDunn ADUs is committed to providing the best possible value in the shortest possible time. They navigate local red tape and maintain open communication throughout the design, permitting, and building process. The company has also received several awards, including the 2019 and 2020 Bay Area and West Region NARI Award for ADUs, the 2021 Bay Area and West Region NARI Award for Whole House Remodel, and the 2021 City of Piedmont Best ADU award.

A construction company that has been serving the East Bay for more than 10 years, offering ADUs, including additions, conversions, and backyard homes.

Acton ADU is a Campbell-based design-build firm serving the East Bay — including Oakland — with over 35 years of construction experience. Founded by Stanley Acton, the company is Bay Area ADU-only, managing every stage from feasibility and custom design through permitting, construction, and final warranty. Units are site-built to California residential code, not prefab or modular. Oakland is one of 40+ cities in Acton ADU's service territory. The company brings strong knowledge of East Bay jurisdictional requirements and manages the full permitting process, which is particularly valuable in Oakland where ADU regulations and permitting timelines can be complex. Their Build Ready product line includes pre-designed plans that can reduce permitting time, while custom ADUs are also available for unique lots. Typical detached ADU projects in the Oakland/East Bay area range from $225K to $475K, with the full process — design through construction — taking 9–14 months. Financing guidance and curated interior packages are part of their service. Reviews highlight reliable communication, attention to detail, and competent handling of California's often challenging ADU permitting environment. A strong choice for Oakland homeowners who want a fully managed, site-built ADU without prefab compromises.