What's the ADU approval process like in Long Beach?

John Thomas

October 19, 2025 at 10:33 PM

Permits & Regulations Long Beach, CA

Hey everyone,

I’m a homeowner in Long Beach, CA, and I’m considering adding an ADU (Accessory Dwelling Unit) to my property. My lot is about 6,000 square feet, and I’m trying to keep the budget under $100,000. I’ve read through some of the city’s guidelines, but I’m still a bit confused about the actual approval process.

From what I understand, I need to secure permits before starting construction, but I’m unsure about the specific steps and timeline involved. How long does it usually take to get an ADU approved in Long Beach? Are there common pitfalls or delays I should be aware of?

Additionally, I’ve seen mention of various zoning restrictions. Does anyone know if I might encounter issues based on my lot size or any other potential constraints? I want to make sure my plan is feasible before investing too much time and money.

Lastly, I’m curious about any design recommendations or requirements specific to Long Beach that could impact my budget. Are there particular materials or designs that are favored or mandated by the city?

I’d really appreciate any insights or experiences you could share. It’s a bit overwhelming trying to navigate all of this, and I want to ensure I’m covering all my bases before moving forward.

Thanks in advance for your help!

1 Answer

David Chen

October 18, 2025 at 02:52 AM

Hello,

Navigating the ADU approval process in Long Beach can indeed be daunting, but with the right approach and understanding of local regulations, it can be much smoother. I’m glad you reached out, and I’ll do my best to guide you through the essentials.

### Understanding the Approval Process

1. **Initial Research and Planning**: Begin by reviewing Long Beach’s specific ADU guidelines and California state laws that impact ADU construction. Key state laws include SB-9 and AB-68, which support the development of ADUs by streamlining processes and reducing some restrictions.

2. **Pre-Application**: Before diving into the formal application, it’s wise to consult with a professional, such as an ADU consultant or architect familiar with Long Beach’s requirements. This can help identify any potential zoning issues early on.

3. **Site Evaluation**: Given your 6,000 square foot lot, you likely meet the minimum lot size requirements, as Long Beach doesn’t typically impose a minimum lot size for ADUs. However, it’s essential to consider setbacks, easements, and any existing structures that might affect placement.

4. **Design and Planning**: You’ll need to create detailed plans for your ADU. Long Beach mandates that ADUs must adhere to local building codes, which include considerations for fire safety, energy efficiency, and more. Designs typically range from 400 to 1,200 square feet, depending on your needs and space.

5. **Permit Application**: Submit your plans to the Long Beach Development Services Department. This includes architectural drawings, site plans, and any required engineering documents. The permit process involves a plan check, which assesses compliance with zoning and building codes.

6. **Approval Timeline**: In Long Beach, the approval process can take anywhere from 60 to 120 days, depending on the complexity of your project and the department’s workload. To expedite this, ensure all your documents are complete and accurate before submission.

### Common Pitfalls and Delays

- **Incomplete Applications**: Missing or incorrect information can delay approvals. Double-check everything before submission.
- **Zoning Issues**: While your lot size shouldn’t be an issue, ensure your ADU design complies with zoning laws, including height restrictions and setbacks.
- **Historic Districts**: If your property is in a historic district, additional design reviews may apply, potentially extending the timeline.

### Budget Considerations

- **Construction Costs**: In Long Beach, ADU construction costs can range from $150 to $300 per square foot. For a budget under $100,000, you might focus on a smaller unit, around 400-500 square feet, using cost-effective materials.
- **Design Elements**: Use standard materials and avoid custom features to keep costs down. Prefabricated or modular ADUs can also be a more budget-friendly option.

### Design Recommendations

- **Energy Efficiency**: Incorporate energy-efficient designs, as Long Beach encourages sustainable building practices. This might include solar panels, high-efficiency windows, and proper insulation.
- **Aesthetic Compatibility**: While not always mandated, ensuring your ADU complements the existing neighborhood aesthetics can ease the approval process.

### Local Considerations

Long Beach is supportive of ADUs as a solution to housing shortages, but they still enforce regulations to maintain community standards. Familiarize yourself with local ordinances beyond state laws, such as specific parking requirements or height restrictions.

### Next Steps

1. **Consult a Professional**: Connect with a local architect or ADU specialist who knows Long Beach’s process well.
2. **Visit the Development Services Center**: The city’s website and physical office can provide guidance and resources specific to your project.
3. **Join Local Forums or Groups**: Engaging with local homeowner associations or online forums can offer insights and updates on ADU projects in your area.

### Helpful Resources

- **Long Beach Development Services**: [Long Beach Development Services](http://www.longbeach.gov/lbds/)
- **California Department of Housing and Community Development**: [HCD ADU Guidebook](https://www.hcd.ca.gov/policy-research/accessorydwellingunits.shtml)

By taking these steps and staying informed, you’ll be well on your way to successfully adding an ADU to your property. The effort will be worth it, providing additional housing space and potential rental income.

Feel free to reach out if you have more questions or need further assistance. Best of 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 Long Beach, 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 Long Beach, 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 Long Beach.

Get Detailed Quote

Why Build an ADU in Long Beach?

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 Long Beach, 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 Long Beach, CA

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