As Accessory Dwelling Units (ADUs) continue to rise in popularity across California, one common point of confusion among homeowners is: “Do I need to provide parking for my ADU?”
The answer isn’t always straightforward—but California state law has significantly relaxed parking rules for ADUs in an effort to make them easier and more affordable to build. Let’s break down the current ADU parking requirements, exemptions, and how they impact your project.
🚗 What Are ADU Parking Requirements?
Under California law (updated through legislation such as AB 68 and SB 1069), parking requirements for ADUs are much less strict than in the past. Here's a summary:
🔹 General Rule:
You may be required to provide one off-street parking space per ADU or per bedroom (whichever is less), but there are many exemptions.
✅ Parking Exemptions for ADUs
In many cases, no additional parking is required if your property meets one or more of the following criteria:
| Exemption | Details |
| Transit Proximity | Within 0.5 miles of a public transit stop (bus, train, etc.) |
| Historic District | Property is in a designated historic district |
| Existing Structure Conversion | ADU is built within the existing home or an accessory structure (e.g., garage conversion) |
| Car Share Location | ADU is located within one block of a recognized car share service |
| On-Street Parking Availability | Some cities may allow on-street parking instead of creating new spaces |
| Reduced Lot Size | Cities often waive requirements for small or narrow lots |
🏠 Parking for Junior ADUs (JADUs)
Parking is not required for Junior ADUs (JADUs). These units are internal to the primary residence and are designed to minimize construction impact—making them an even easier option for homeowners with limited space.
📐 Design & Placement Considerations
If your ADU does require parking, the space:
Can be uncovered (a simple parking pad is fine)
Must be accessible via driveway or alley
Cannot block emergency access or be placed in a front yard setback (depending on local code)
✅ Benefits of Building a Permitted ADU (Even If Parking Is Required)
Whether or not parking is needed, building a permitted ADU offers a host of benefits:
💰 Increased Property Value
ADUs often add 20–30% to your home’s market value, especially when they’re legally permitted and up to code.
🏘 Rental Income
Renting out an ADU provides consistent cash flow and can help offset your mortgage.
👨👩👧 Family Flexibility
Perfect for multigenerational living, live-in caregivers, or returning college students.
🔐 Legal & Financial Protection
Permitted ADUs are compliant with city and state laws, making them insurable, financeable, and protected from fines or demolition.
🌎 Efficient Land Use
ADUs support urban infill and reduce sprawl, making better use of California’s existing housing footprint.
