What are the parking requirements for ADUs in San Jose?

Linda Taylor

October 20, 2025 at 03:14 AM

Design & Planning San Jose, CA

Hi everyone,

I'm looking into adding an ADU to my property in San Jose and am trying to get a handle on the parking requirements specific to our area. Our lot is about 6,000 square feet, and we want to build a 700-square-foot ADU with a budget of around $150,000. I've read through some city guidelines, but I'm still a bit confused about the parking rules.

From what I understand, San Jose might have relaxed some parking requirements, especially if you're near public transit, which we are. We're about a 10-minute walk from a major bus line. But I'm not entirely sure how this affects us, specifically.

1. Do we still need to provide additional parking for the ADU given our proximity to public transit, or does this qualify us for an exemption?
2. How are parking spaces typically configured on lots of our size? We don't have a lot of extra space, so creative solutions are welcome.
3. If we do need to add parking, what are the specifications for the space? Does it need to be fully paved, or can we use a more permeable material?

I’d appreciate insights from anyone who has navigated this process recently or has expertise in San Jose's ADU regulations. I just want to ensure we're planning correctly and not caught by surprise with extra requirements or costs.

Thanks so much for your help!

1 Answer

David Chen

October 18, 2025 at 04:04 PM

Hello,

I'm glad you're taking the initiative to explore adding an ADU to your property in San Jose. ADUs are a fantastic way to increase property value and provide additional living space. Let's dive into your questions about parking requirements and how they apply to your specific situation.

### 1. Parking Requirements and Proximity to Transit

San Jose, along with the rest of California, has indeed relaxed many parking requirements for ADUs, particularly with the advent of state legislation such as SB-9 and AB-68. These laws are designed to make it easier for homeowners to build ADUs by reducing barriers, including parking mandates.

#### Exemptions:
- **Proximity to Public Transit**: Since you mentioned that you are about a 10-minute walk from a major bus line, you likely qualify for an exemption from additional parking requirements. According to California state laws, if an ADU is within half a mile of public transit, additional parking is not required.

Given your proximity to public transit, you should not need to provide additional parking for your ADU. However, it's always wise to confirm this with the San Jose Planning Division to ensure there are no unique local stipulations.

### 2. Configuring Parking on Your Lot

Considering your lot size of 6,000 square feet, space management is crucial. Here are a few creative solutions if you end up needing parking:

- **Tandem Parking**: This involves parking one car behind another in a driveway. It's a practical solution if your driveway is long enough and can accommodate two cars in line.
- **Utilizing Side Yards**: If your property layout allows, converting part of a side yard into a parking area can be an effective use of space.
- **Parking Lifts**: For more innovative solutions, consider parking lifts which allow cars to be stacked vertically. These are more expensive but can solve space issues efficiently.

### 3. Parking Space Specifications

If you do need to provide additional parking, San Jose typically requires spaces to be at least 9 feet wide and 18 feet long. Regarding materials, while a fully paved space is traditional, San Jose does allow for permeable materials such as gravel or permeable pavers. These options are eco-friendly and help with stormwater management.

### Cost Estimates and Timelines

- **Cost**: The cost of constructing a parking spot with permeable materials can range from $5,000 to $10,000 in San Jose, depending on the materials and labor involved.
- **Timeline**: Installing a parking space can take anywhere from two weeks to a month, considering design, permitting, and construction phases.

### Practical Advice and Common Pitfalls

- **Verify Transit Proximity**: Use San Jose’s official maps or tools to confirm your distance from public transit. This step ensures you qualify for exemptions.
- **Consult Local Ordinances**: Always cross-check with local zoning codes and the San Jose Planning Division for the latest and most applicable rules.
- **Design Flexibility**: Plan your ADU and parking with future flexibility in mind. Consider how changes in family size or city regulations might affect your needs.

### Next Steps

- **Consult with a Professional**: Engage with an architect or a contractor who has experience with ADUs in San Jose. They can provide insights into design options and help navigate the permitting process.
- **Reach Out to the Planning Division**: Contact the San Jose Planning Division for a pre-application meeting. This step will provide clarity on what is specifically required for your project.
- **Research Funding Options**: Look into state or local programs that may offer financial assistance or incentives for building ADUs.

### Resources

- **San Jose Planning Division Website**: [San Jose Planning](https://www.sanjoseca.gov/your-government/departments-offices/planning-building-code-enforcement/planning-division)
- **California ADU Handbook**: A comprehensive guide to ADU regulations in California, which can be found online.

By taking these steps, you’ll be well-equipped to navigate the parking requirements and overall planning for your ADU in San Jose. If you have any further questions or need additional assistance, feel free to reach out. Good luck with your project!

Warm regards,

[Your Name]
Experienced ADU Consultant

Didn't find what you're looking for?

Need help with ADU plans, permits, or finding contractors? Our experts are here to guide you through the entire process.

Book Free Call
or call: (323) 591-3717

Community Answers

Share Your Knowledge

Help the ADU community by sharing your experience, insights, or professional expertise.

Your Answer

Please provide helpful, detailed answers based on your experience with ADUs.

Your Name *

Email Address *

Required but never displayed publicly or shared.

Security Verification

Your contribution helps thousands of homeowners exploring ADU options

Ready to Start Your ADU Project?

Get a personalized quote based on your specific needs and location. Our experts will guide you through every step of the process.

Get Instant Quote

Free consultation included • No obligation

Types of ADUs in San Jose, CA

Understanding the different types of Accessory Dwelling Units can help you choose the best option for your property and needs.

Detached ADU

A separate, standalone structure built on your property. Offers maximum privacy and flexibility for tenants.

Complete privacy
Custom design options
Higher rental income potential

Attached ADU

An addition to your existing home with a separate entrance. Cost-effective option with shared utilities.

Lower construction costs
Shared utility connections
Family-friendly proximity

Garage Conversion

Convert existing garage space into a livable unit. Most cost-effective ADU option with fastest approval.

Lowest construction cost
Faster permitting
Uses existing structure

JADU

Junior ADU created within the existing home. Maximum 500 sq ft with efficiency kitchen and shared utilities.

Minimal construction
No parking requirement
Perfect for family use

Upper Floor ADU

Add a second story or convert existing upper floor space. Maximizes property value and rental potential.

Premium rental rates
Enhanced privacy
Great city views

Basement ADU

Convert basement or lower level into living space. Great option for properties with existing below-grade areas.

Uses existing space
Natural temperature control
Sound isolation

ADU Cost Guide for San Jose, CA

Understanding ADU costs helps you budget effectively and make informed decisions about your project. Costs vary based on size, complexity, and local factors.

ADU Type	Size Range	Cost Range	Timeline	Best For
Garage Conversion	400-800 sq ft	$80K - $150K	3-6 months	Budget-conscious homeowners
JADU	Up to 500 sq ft	$50K - $100K	2-4 months	Family use, minimal disruption
Attached ADU	600-1,000 sq ft	$120K - $200K	4-8 months	Shared utilities, family proximity
Detached ADU	600-1,200 sq ft	$150K - $300K	6-12 months	Maximum rental income
Two-Story ADU	800-1,500 sq ft	$200K - $400K	8-15 months	Maximizing property value

Cost Factors to Consider

Site Preparation: $5K - $25K
Permits & Fees: $3K - $15K
Utility Connections: $5K - $20K
Finish Level: $10K - $50K variance
Landscaping: $2K - $10K

Potential ROI

Rental Income: $1,500 - $4,000/month
Property Value Increase: 20-30%
Payback Period: 8-15 years
Tax Benefits: Depreciation allowances
Equity Growth: Long-term appreciation

Get Your Personalized Cost Estimate

These are general ranges. Your actual costs may vary based on specific site conditions, design choices, and local market factors in San Jose.

Get Detailed Quote

Why Build an ADU in San Jose?

Financial Benefits

Rental Income: Generate $18,000-$48,000 annually

Property Value: Increase home value by 20-30%

Tax Benefits: Depreciation and expense deductions

Investment: Strong ROI in California markets

Lifestyle Benefits

Multigenerational Living: Keep family close while maintaining privacy

Home Office: Create dedicated workspace or studio

Guest Space: Comfortable accommodations for visitors

Sustainability: Increase housing density efficiently

Popular ADU Floor Plans

Explore our most popular ADU designs that work well in San Jose, CA. These professionally designed floor plans optimize space and functionality while meeting local building requirements.

Cascade ADU Floor Plan - 2 Bedroom, 2 Bathroom

2 Bed 2 Bath 1,200 sq ft

The Cascade

Spacious 2-bedroom design perfect for families. Features open living area, full kitchen, and two full bathrooms with optimal privacy.

Open floor plan
Master suite
Laundry room

Summit ADU Floor Plan - 2 Bedroom, 2 Bathroom

2 Bed 2 Bath 950 sq ft

The Summit

Efficient 2-bedroom layout maximizing every square foot. Great for narrow lots with smart storage solutions throughout.

Compact design
Pantry storage
Two full baths

Brookside ADU Floor Plan - 2 Bedroom, 2 Bathroom

2 Bed 2 Bath 1,400 sq ft

The Brookside

Luxurious 2-bedroom design with premium features. Includes master suite, guest bedroom, and spacious living areas.

Large living room
Walk-in closets
Full kitchen island

Sequoia ADU Floor Plan - 3 Bedroom, 2 Bathroom

3 Bed 2 Bath 1,100 sq ft

The Sequoia

Unique 3-bedroom configuration perfect for larger families. Features dual bathrooms and smart space utilization.

Three bedrooms
Laundry room
Multiple closets

Crestline ADU Floor Plan - 3 Bedroom, 2 Bathroom

3 Bed 2 Bath 1,500 sq ft

The Crestline

Premium 3-bedroom layout with maximum comfort. Features spacious bedrooms, walk-in closets, and luxury finishes.

Primary suite
Pantry space
Open concept

Ready to Explore More ADU Designs?

Browse our complete collection of ADU floor plans with detailed specifications, 3D renderings, and customization options.

View All Floor Plans

(323) 591-3717 Schedule Consultation

Types of ADUs in San Jose, CA

Understanding the different types of Accessory Dwelling Units available in San Jose, CA can help you choose the best option for your property and budget.