How to Obtain an ADU Permit in Oakland
What Is an ADU?
An Accessory Dwelling Unit (ADU) is a self-contained housing unit located on the same lot as a single-family or multi-family home. It must include a separate entrance, living area, kitchen, and bathroom.
Types of ADUs in Oakland:
Detached ADU: Separate structure, often in the backyard
Attached ADU: Shares a wall with the main home
Garage Conversion ADU: Converts an existing garage into living space
Junior ADU (JADU): Up to 500 sq. ft., located within the main home with a small kitchen
📝 How to Apply for an ADU Permit in Oakland – Step-by-Step
Step 1: Determine Your ADU Type
Is it detached? Attached? A conversion? Knowing this impacts the process and fees.
Step 2: Prepare Plans
Use an architect or pre-approved “off-the-shelf” ADU plans provided by the City of Oakland to save time and money.
Step 3: Submit a Zoning Worksheet
Step 4: Apply for a Building Permit
Once zoning is approved, submit building permit documents—this includes construction drawings, energy compliance forms, and more.
Step 5: Review and Revisions
City staff will review your application. If revisions are needed, you’ll be notified.
Step 6: Pay Fees & Get Permit
Once approved, pay all fees and receive your permit to begin construction.
📜 Key ADU Regulations in Oakland
| Regulation Type | Rule in Oakland |
| Lot Size Minimum | No minimum required |
| Maximum ADU Size | Detached: up to 1,200 sq. ft. |
| JADU Size Limit | 500 sq. ft. maximum |
| Setbacks | 4 ft side and rear for detached ADUs |
| Height Limit | Up to 16 ft (more allowed in some cases) |
| Parking | No additional parking required if near transit |
| Rental Restrictions | Short-term rentals (<30 days) not allowed for ADUs |
💰 How Much Does an ADU Permit Cost in Oakland?
| Fee Type | Estimated Cost Range |
| Zoning/Planning Review | $300 – $1,200 |
| Building Permit | $1,000 – $5,000+ |
| Plan Check Fees | $500 – $2,000 |
| School Impact Fees | $0 – $4,000 (waived for ADUs ≤ 750 sq. ft.) |
| Sewer/Water Connections | $0 – $5,000 |
| Total Estimated Fees | $3,000 – $12,000+ |
✅ Benefits of Building a Permitted ADU
- 💵 Legal rental income
- 🏠 Increased property value
- 🚫 Avoid fines for unpermitted construction
- 🔧 Access to rebates and financing (like CalHFA ADU grants)
- 🏘️ Long-term housing flexibility
