ADU1

ADU1 is a California-based design-build firm specializing in helping multifamily property owners maximize the value and income potential of their properties through the development of accessory dwelling units (ADUs). By focusing on multifamily housing opportunities, ADU1 assists owners in identifying how many additional units can legally be added under current zoning and ADU regulations while navigating the complexities of planning, permitting, and construction.

With a team of experienced general contractors, engineers, and legal professionals bringing more than 30 years of combined industry experience, ADU1 provides end-to-end support throughout the entire ADU development process. Their expertise helps property owners unlock additional rental income, increase property value, and make the most efficient use of existing real estate assets.

Multifamily ADU Development Expertise

ADU1 specializes in working with multifamily properties located within eligible zoning areas. Under current California ADU regulations, multifamily property owners may be able to add:

• Attached ADUs equal to up to 25% of the existing unit count

• Up to 2 detached ADUs on the property

These opportunities can significantly increase the number of rentable units on a property. ADU1 evaluates each site individually to determine development potential while identifying any required upgrades or retrofits that may be necessary.

ADU Feasibility Report

For property owners exploring ADU development opportunities, ADU1 offers a comprehensive ADU Feasibility Report for $250. This report includes:

• Land use and zoning analysis

• Preliminary budget assessment

• Construction feasibility evaluation

• Review of site-specific constraints and challenges

• Development potential recommendations

The report provides owners with a clear understanding of project viability before making a larger financial commitment.

Full-Service Design and Construction

As a full-service ADU contractor, ADU1 manages every stage of the project through three primary phases:

Site Analysis

• Review of local ADU regulations

• Feasibility assessment

• Preliminary budgeting

• Site condition evaluation

Engineering, Planning & Design

• Architectural plans

• Structural engineering plans

• Mechanical, electrical, and plumbing (MEP) plans

• Permit preparation and submission

• Coordination with local building departments

Construction

• Full project management

• Construction oversight

• Dedicated project coordinator

• Ongoing communication and progress updates

• Budget and schedule management

Client-Focused Project Management

ADU1 emphasizes transparency, accessibility, and proactive communication throughout every project. Their team provides clients with direct access to knowledgeable professionals who can answer questions and provide project updates at every stage.

Their project management approach focuses on:

• Timely responses to calls and emails

• Clear budgeting and scheduling

• On-time project completion

• Cost control and transparency

• Tenant coordination during construction for occupied properties

Educational Resources

To help property owners better understand ADU development opportunities, ADU1 hosts a free weekly ADU Q&A session every Wednesday at 12:30 PM. Led by company principals Helen and David, these sessions provide valuable insights into zoning requirements, development potential, permitting processes, and construction considerations.

For multifamily property owners seeking to increase rental income and maximize property value through ADU development, ADU1 provides the expertise, planning, and construction services needed to successfully complete projects from concept to completion.