What are the parking requirements for ADUs in Sunnyvale?

Building an Accessory Dwelling Unit (ADU) in Sunnyvale can be a rewarding project, adding both living space and value to your property. However, navigating parking requirements and other regulations can be complex. Let's address your questions about parking and provide a comprehensive overview of the process.

### Parking Requirements and Exemptions

1. **Proximity to Public Transit:** In California, certain exemptions from parking requirements apply under state laws like SB-1069 and AB-68. Specifically, if your property is within half a mile of public transit, you are typically exempt from providing additional parking for an ADU. Since your home is about half a mile from a VTA bus stop, this proximity should qualify you for the exemption. Be sure to confirm the exact distance with a map or a planning professional to ensure compliance.

2. **Parking Design:** If your project does not qualify for an exemption and parking is required, it doesn't necessarily need to be covered. An open space in the driveway can suffice. However, consider the layout and accessibility. A well-designed parking space can enhance usability without significantly increasing costs.

3. **Impact on Design and Costs:** Parking requirements, when applicable, can influence your ADU's design and placement. For instance, if you need to add a parking space, you might have to adjust the ADU's footprint or site it differently on your lot, potentially affecting landscaping or existing structures. Costs for adding a simple parking space can range from $5,000 to $10,000, depending on site-specific conditions.

### Local Regulations and Enforcement

Sunnyvale adheres to both state regulations and its municipal code. The city is generally proactive in enforcing these rules, so it's essential to get it right from the start. Here are a few key points:

- **ADU Size Limits:** Sunnyvale allows ADUs up to 850 square feet for one-bedroom units and up to 1,000 square feet for units with more than one bedroom. Your 6,500-square-foot lot should accommodate an ADU comfortably, but verify specific setbacks and height restrictions in local ordinances.

- **Process and Timelines:** The approval process for an ADU in Sunnyvale can take several months. Initial research and planning, including design work, can take 2-3 months. City review and permitting could take another 3-4 months, assuming all documents are in order. Construction timelines vary but typically range from 6-12 months.

### Common Pitfalls and Tips

1. **Incomplete Applications:** Ensure that your application is complete and accurate. Missing documents or incorrect information can delay the process significantly.

2. **Ignoring Lot Constraints:** Be mindful of utility easements, lot coverage limits, and setback requirements. Overlooking these can lead to redesigns and additional costs.

3. **Budget Planning:** Besides construction costs, account for soft costs such as design fees, permits, and utility hookups. In Sunnyvale, total project costs for an ADU can range from $150,000 to $300,000, depending on size, design, and materials.

### Next Steps

1. **Consult a Professional:** Engage with an architect or ADU consultant familiar with Sunnyvale regulations. They can guide design, permitting, and construction processes effectively.

2. **Visit the Sunnyvale Planning Department:** Their staff can provide personalized advice and ensure you're interpreting regulations correctly. They can also confirm your eligibility for parking exemptions.

3. **Research and Network:** Connect with local homeowners who have built ADUs. Their experiences can offer valuable insights and potentially help avoid common mistakes.

4. **Consider Financing Options:** Explore financing options early, such as home equity loans or specialized ADU loans, to ensure you have the necessary funds when needed.

5. **Plan for Flexibility:** Design your ADU with future adjustments in mind, such as potential expansions or changes in use, to maximize its long-term value.

In summary, while the process can seem daunting, careful planning and adherence to regulations can lead to a successful ADU project. Sunnyvale is a supportive environment for ADUs, given its alignment with state laws aimed at increasing housing options. Good luck with your planning, and feel free to reach out to local resources or professionals as needed!