I want to add a second unit but keep my existing house. Can I get a waiver if my house is over 800 sq ft?
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Get Instant QuoteTypes of ADUs in Los Angeles, 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 Los Angeles, 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
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These are general ranges. Your actual costs may vary based on specific site conditions, design choices, and local market factors in Los Angeles.
Get Detailed QuoteWhy Build an ADU in Los Angeles?
Financial Benefits
Lifestyle Benefits
Popular ADU Floor Plans
Explore our most popular ADU designs that work well in Los Angeles, CA. These professionally designed floor plans optimize space and functionality while meeting local building requirements.
The Cascade
Spacious 2-bedroom design perfect for families. Features open living area, full kitchen, and two full bathrooms with optimal privacy.
Master suite
Laundry room
The Summit
Efficient 2-bedroom layout maximizing every square foot. Great for narrow lots with smart storage solutions throughout.
Pantry storage
Two full baths
The Brookside
Luxurious 2-bedroom design with premium features. Includes master suite, guest bedroom, and spacious living areas.
Walk-in closets
Full kitchen island
The Sequoia
Unique 3-bedroom configuration perfect for larger families. Features dual bathrooms and smart space utilization.
Laundry room
Multiple closets
The Crestline
Premium 3-bedroom layout with maximum comfort. Features spacious bedrooms, walk-in closets, and luxury finishes.
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 PlansTypes of ADUs in Los Angeles, CA
Understanding the different types of Accessory Dwelling Units available in Los Angeles, CA can help you choose the best option for your property and budget.
Detached ADU
A standalone structure separate from the main house. Offers maximum privacy and flexibility.
- Maximum privacy
- Flexible design options
- Higher rental income potential
Garage Conversion
Converting an existing garage into a living space. Most cost-effective option.
- Lower construction costs
- Faster permitting process
- Existing utilities nearby
Attached ADU
An addition to the existing house with separate entrance. Balances cost and privacy.
- Shared utilities
- Moderate construction costs
- Easy maintenance access
Ready to Start Your ADU Project?
Get a personalized quote and expert guidance for your Los Angeles ADU project.
Get Instant QuoteADU Cost Guide for Los Angeles, CA
Understanding ADU costs helps you budget effectively and make informed decisions about your project in Los Angeles, CA.
| ADU Type | Size Range | Cost Range | Cost per Sq Ft | Timeline |
|---|---|---|---|---|
| Garage Conversion | 400-800 sq ft | $80,000 - $150,000 | $200 - $250 | 3-6 months |
| Attached ADU | 500-1,200 sq ft | $150,000 - $300,000 | $250 - $350 | 6-9 months |
| Detached ADU | 600-1,200 sq ft | $200,000 - $400,000 | $300 - $450 | 8-12 months |
| Prefab ADU | 400-1,000 sq ft | $120,000 - $250,000 | $250 - $350 | 4-8 months |
| JADU (Junior ADU) | Up to 500 sq ft | $50,000 - $120,000 | $150 - $300 | 2-4 months |
Cost Factors to Consider:
- Site preparation and utilities
- Permits and plan review fees
- Foundation and structural work
- Finishes and appliances
- Landscaping and driveway
Ways to Save Money:
- Choose garage conversion over new build
- Use prefab or modular construction
- Keep design simple and efficient
- Bundle with main house renovations
- Work with experienced ADU builders
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Our experts will provide a detailed cost breakdown for your specific Los Angeles property.
Get Free Cost EstimateComplete Guide to SB-9 (Lot Splits) ADUs in Los Angeles, CA
Understanding SB-9 (Lot Splits) for ADU Projects
ADU development in Los Angeles, CA involves numerous considerations specific to sb-9 (lot splits). Understanding local requirements, best practices, and potential challenges helps ensure project success.
Each ADU project is unique, with specific circumstances that influence design, permitting, and construction decisions. Professional guidance helps navigate these complexities and achieve optimal outcomes.
The GatherADU team has extensive experience with sb-9 (lot splits) aspects of ADU development and can provide expert assistance throughout your project.
SB-9 (Lot Splits) Requirements in Los Angeles, CA
Local regulations in Los Angeles, CA have specific requirements that affect ADU development. Understanding these local nuances is crucial for project success and compliance.
Los Angeles has 135 ADU-related questions in our database, indicating active development interest in your area. This local activity suggests growing expertise among contractors, architects, and city officials familiar with ADU projects.
Common considerations for Los Angeles include local architectural standards, historical district requirements if applicable, utility connection procedures, and neighborhood-specific zoning overlays that may affect your project.
Expert Insights on SB-9 (Lot Splits)
The GatherADU team has helped hundreds of homeowners navigate sb-9 (lot splits) challenges successfully. Our experience reveals common patterns, effective strategies, and potential pitfalls to avoid.
Professional consultation early in your project can prevent costly mistakes and delays. We've seen how proper planning in the sb-9 (lot splits) phase saves both time and money throughout the entire ADU development process.
Our database contains 14 questions related to SB-9 (Lot Splits), with 14 expert answers providing comprehensive guidance for homeowners facing similar challenges.
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Don't let sb-9 (lot splits) challenges delay your ADU dreams. Our experts can provide personalized guidance specific to your situation in Los Angeles, CA.
More SB-9 (Lot Splits) Questions & Answers
Explore additional sb-9 (lot splits) questions from our community to gain deeper insights into ADU development challenges and solutions.
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June 09, 2025ADU Questions from Los Angeles, CA
Discover how other homeowners in Los Angeles, CA are approaching their ADU projects. Local insights can provide valuable context for your own planning.
How long did your garage conversion take from demo to move in?
I'm trying to plan my timeline for a garage conversion project. How long should I realistically expe...
June 22, 2025ADU permit timeline in Los Angeles - what to expect?
We're planning to convert our detached garage into an ADU in LA. The garage is about 400 sq ft and w...
June 21, 2025How do I check if my LA ADU project vested under old rules before the 2019 ADU Ordinance, and can I switch to new rules?
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June 20, 2025Can I build a Movable Tiny House as an ADU in LA without following building code rules for regular structures, and what standards still apply?
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My garage floor is about 8 inches lower than my house floor. I want to raise it to match for the con...
June 19, 2025I have a tenant in my single-family home. Can I still use SB 9 to add another unit without kicking them out?
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June 19, 2025Related ADU Questions
These questions share similar topics or locations and may provide additional insights for your ADU project.
How long did your garage conversion take from demo to move in?
ADU permit timeline in Los Angeles - what to expect?
How do I check if my LA ADU project vested under old rules before the 2019 ADU Ordinance, and can I switch to new rules?
Can I build a Movable Tiny House as an ADU in LA without following building code rules for regular structures, and what standards still apply?
Has anyone raised the garage floor, how did you do it and what did it cost?
ADU Development Checklist for Los Angeles, CA
Use this comprehensive checklist to ensure you don't miss important steps in your ADU development process.
Planning Phase
- Define project goals and budget
- Research local zoning requirements
- Evaluate site conditions and constraints
- Consult with ADU experts
- Develop preliminary design concepts
Pre-Construction
- Finalize architectural plans
- Submit permit applications
- Select qualified contractors
- Secure financing if needed
- Schedule utility connections
Construction Phase
- Site preparation and excavation
- Foundation and framing work
- Rough-in electrical and plumbing
- Insulation and drywall installation
- Interior and exterior finishes
Completion
- Final inspections and approvals
- Certificate of occupancy
- Utility meter installation
- Final walkthrough and cleanup
- Property insurance updates
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Los Angeles, CA
This question is specific to Los Angeles, CA
Local regulations may vary by jurisdiction. Always verify with your local planning department.