How Fast Can I Permit an ADU in Sacramento?

Accessory dwelling units (ADUs) are one of Sacramento’s most effective solutions for adding affordable housing and creating new rental opportunities for homeowners. But many Sacramento homeowners ask the same question at the start of an ADU project: how fast can I permit an ADU in Sacramento? The answer depends on city departments, plan review requirements, and whether the project uses shelf-ready plans or custom designs. With the right preparation, property owners can move through the process quickly and begin construction without unnecessary delays.

The Permit Process in Sacramento

The permitting process for accessory dwelling units begins when property owners submit a complete application to the City of Sacramento or Sacramento County, depending on the property’s location. The city’s community development department oversees ADU projects, reviewing site plans, property lines, building codes, and compliance with local regulations.

A typical ADU permit requires:

• Completed application with details on ADU size, location, and type (detached ADU, one bedroom unit, garage conversion, or attached ADU).
• Site plan showing property lines, sewer and water connections, and utility placement.
• Construction drawings that meet applicable building code and safety guidelines.
• Payment of required fees for plan review and permits.
• Additional information if located in special zoning districts or historic areas.

How Fast Is the Review Timeline?

State law requires local jurisdictions to review and issue permits for ADUs within 60 days of receiving a complete application. In Sacramento, many ADUs can be reviewed and approved in as little as four to eight weeks, provided all required documents are submitted correctly and no major changes are needed. The timeline may vary depending on the complexity of the project, the size of the unit, and city staff workload.

• Faster approval: Using pre-approved or shelf-ready plans often shortens review time since the city has already confirmed compliance.
• Slower approval: Custom designs or projects requiring variances, zoning adjustments, or special utility connections may extend review beyond 60 days.

Steps Homeowners Can Take to Speed Up Permitting

Sacramento homeowners can prepare effectively to ensure the process is smoother:

1. Prepare complete documents: Submit plans, site details, and utility information together to avoid delays during plan review.
2. Meet local regulations: Ensure ADU size, setbacks from property lines, and design details comply with Sacramento city and county codes.
3. Use shelf-ready ADU plans: Pre-approved designs often move faster through plan review.
4. Contact city departments early: Clarify sewer, water, and utility requirements before applying.
5. Respond quickly: If city staff request additional information, reply promptly to keep the process moving.

Costs and Fees During Permitting

The cost of permits varies depending on ADU size, construction type, and location. Smaller units, such as one-bedroom ADUs under 750 square feet, may be exempt from certain impact fees, reducing overall expenses. Typical fees include plan review, building permit charges, and utility connection costs for water and sewer. Sacramento homeowners should budget for both permit fees and construction costs, which vary depending on site conditions and ADU size.

The Role of Inspections in the Timeline

Once permits are approved, construction can begin. However, inspections by city officials are required at different stages—such as foundation, framing, plumbing, electrical, and final safety review. Scheduling inspections promptly and ensuring compliance with building codes prevents delays and allows homeowners to move toward occupancy faster.

Grants and Programs That Assist Homeowners

Sacramento homeowners may be eligible for programs and grants designed to reduce costs and streamline ADU development. Some local programs provide assistance with design, permitting, or financing, making the process easier and more affordable. Exploring these resources before starting an ADU project can help property owners save money and avoid delays.

A+ Thoughts on Permitting Timelines

So, how fast can you permit an ADU in Sacramento? In most cases, homeowners can expect approval in four to eight weeks if they submit complete plans that meet all requirements. State law ensures permits must be processed within 60 days, which means Sacramento homeowners who prepare carefully and use pre-approved ADU plans can move from application to construction in just a couple of months. By working closely with contractors, responding promptly to city requests, and ensuring compliance with codes and regulations, property owners can start building sooner and enjoy the long-term benefits of ADU ownership.

A+ Construction & Remodeling helps Sacramento homeowners through every stage of the ADU process—from design and permitting to construction and inspections. By providing expertise in local regulations, building permits, and community development requirements, A+ ensures projects are completed efficiently, cost-effectively, and with high-quality results.