What is the process of building ADU, and what steps are involved?

Research and Planning

Local Zoning Laws and Regulations

• This is the most critical first step. Contact your local planning department to obtain detailed information on zoning ordinances related to ADUs.
• Inquire about size limitations, setback requirements, height restrictions, parking regulations, and allowable ADU types.
• Understand any specific design guidelines or aesthetic requirements that may apply.

Building Codes

• Familiarize yourself with local building codes, which dictate safety standards for structural integrity, fire safety, electrical, plumbing, and mechanical systems.
• These codes ensure that the ADU is safe and habitable.

Feasibility Study

• Conduct a feasibility study to assess the viability of your ADU project, considering factors such as cost, timeline, and potential return on investment.
• Evaluate your property's topography, utilities, and existing infrastructure.

Design Development

• Develop a preliminary design plan that aligns with your needs and complies with local regulations.
• Consider the ADU's layout, size, materials, and aesthetic appeal.
• Consider the ADU's purpose, such as rental income, multigenerational living, or a home office, as this will influence the design.

Financing

Budget Planning

• Develop a detailed budget that includes all anticipated costs, such as design fees, permits, materials, labor, and contingencies.
• Obtain quotes from contractors and suppliers to accurately estimate expenses.

Financing Options

• Explore various financing options, including home equity loans, construction loans, personal loans, and cash reserves.
• Research potential grants and incentive programs offered by local governments or organizations.

Financial Projections

• Develop financial projections to assess the potential return on investment, considering rental income and increased property value.

Design and Permits

Architectural and Engineering Design

• Hire a qualified architect or designer to create detailed construction plans that meet local building codes and zoning regulations.
• Engage a structural engineer to ensure the ADU's structural integrity.

Permit Application

• Submit permit applications to the local building department, including building, electrical, plumbing, and mechanical permits.
• Prepare all necessary documentation, including construction plans, site plans, and engineering calculations.

Permit Approval

• Work closely with the building department to address any questions or concerns and obtain permit approvals.

Construction

Contractor Selection

• Hire a licensed and insured contractor with experience in ADU construction.
• Obtain multiple bids and conduct thorough reference checks.

Site Preparation

• Prepare the construction site, including excavation, grading, and utility connections.

Foundation and Framing

• Pour the foundation and frame the structure according to the approved plans.

Utility Installation

• Install electrical, plumbing, and HVAC systems, ensuring compliance with building codes.

Interior and Exterior Finishing

• Complete interior and exterior finishing, including insulation, drywall, flooring, siding, and roofing.

Inspections

Scheduled Inspections

• Schedule inspections at various stages of construction to ensure compliance with building codes and safety standards.
• Standard inspections include foundation, framing, electrical, plumbing, and final inspections.

Inspection Approvals

• Address any deficiencies identified during inspections and obtain inspection approvals.

Occupancy

Certificate of Occupancy (CO)

• Obtain a certificate of occupancy from the local building department, confirming that the ADU is safe and habitable.

Final Walk-Through

• Conduct a final walk-through with the contractor to ensure all work is completed to your satisfaction.

Tenant Acquisition (if applicable)

• If you plan to rent out the ADU, advertise the unit and screen potential tenants.
• Create a rental agreement that outlines the terms of tenancy.

Move-In

• Move into the new ADU or allow your new tenants to move in.