Expert JADU in California
Transform your existing space into a permitted Junior ADU. We provide expert architectural design and JADU plans that California homeowners trust. From initial concepts to final permits, we handle the entire process to ensure your JADU is approved and ready for construction.
- 10+ Years Experience
- All California Cities
- Full Permit Processing
Why Build a JADU in California?
A Junior Accessory Dwelling Unit is the most cost-effective way to add a permitted living space to your home. By staying within your existing footprint, you save on construction costs while gaining all the benefits of a secondary unit.
Maximum ROI
JADU conversions offer the highest return on investment. With lower construction costs and high rental demand in California, your JADU can pay for itself in just a few years.
Fast Approval
Because JADUs are created within existing structures, the permit process is often faster and less complex than new construction. We streamline the JADU permit processing for you.
Multi-Gen Living
A Junior ADU is the perfect solution for aging parents or adult children. It provides privacy and independence while keeping your loved ones close by.
WHY WE ARE YOUR BEST CHOICE FOR JADUs
With 10+ years of experience in JADU design and permitting, we deliver results that California city departments approve quickly.
10+ Years of JADU Expertise
A decade of experience in Junior Accessory Dwelling Units across California. We know every city’s specific JADU ordinances.
Statewide Permit Mastery
We handle the entire planning and permit process. Our designs pass city checks because we master California zoning and land-use laws.
Transactional ROI Focus
We design for maximum value. A permitted JADU is the fastest way to add rental income and equity to your California property.
Trusted Contractor Network
We focus on design and permits, but we connect you with our vetted, experienced builders to bring your JADU vision to life.
Efficient Junior ADU Design
We create well-planned JADUs that transform part of your home into a functional, independent living space. Ideal for rental income or extended family, each layout is designed to maximize space and meet California requirements.
Plans & Permit Support
From drawings to city approvals, we guide your Junior ADU project every step of the way and coordinate with trusted professionals to ensure a smooth and efficient build.
CALIFORNIA JADU SPECIALISTS
Navigating JADU regulations in California requires expert knowledge. Whether you are looking to convert a spare bedroom or a section of your garage, our team provides the JADU plans you can rely on. We are the premier choice for design and permit processing, ensuring your project is handled with precision.
California JADU Law Mastery
We master the specific JADU requirements under California state law. Our designs ensure compliance with all size and amenity regulations.
City-Specific Expertise
From Los Angeles to San Francisco, we navigate every planning department for your Junior ADU conversion.
Full-Service Design & Permits
We provide comprehensive JADU design and permit services. From site plans to final approval, we handle the bureaucracy for you.
Custom Small-Space Solutions
We design JADUs that maximize every square inch. Our studio approach ensures your new unit is both beautiful and functional.
End-to-End ROI Strategy
We optimize your conversion to maximize property value. Our JADU designs focus on your long-term financial success.
What Can Your JADU Become?
A Junior ADU offers incredible flexibility for your California home.
Rental Studio
Generate passive income by renting out your JADU. High demand for small, permitted units makes this a top choice.
In-Law Suite
Provide a comfortable, private space for family members. A JADU keeps them close while maintaining independence.
Home Office Sanctuary
Create a quiet, permitted workspace away from the main house activities. Perfect for remote professionals.
Guest Suite
Offer visitors a luxury experience with their own entrance and kitchenette. A JADU adds prestige to your home.
Creative Studio
A dedicated space for art, music, or hobbies. Our JADU designs provide the perfect environment for creativity.
College Student Flat
Give your student their own space while they save on housing costs. A JADU is a smart family investment.
Our Proven JADU Process
We simplify the JADU conversion process into 4 clear steps.
01
Strategic Consultation (Free Consultation)
We analyze your existing space and local JADU ordinances to determine the best path for your conversion.
02
Precision Drafting & Design
Our team creates detailed JADU plans that optimize every inch of your existing footprint.
03
Permit Management
We handle the plan permit processing for your Junior ADU. We manage all corrections until approved.
04
Contractor Matching
Once your plans are approved, we connect you with our vetted builders to begin your JADU construction.
A Smart Investment for Your Home
A permitted JADU is one of the highest ROI home improvements in California. By converting underutilized space, you add significant market value and potential rental income with minimal construction costs.
- Increase Property Value by 10-20%
- Fastest Way to Add Permitted Living Space
- Immediate Rental Income Potential
Our Specialized JADU Services
We provide the technical foundation for your JADU. While we don’t build, we work with the best builders in California to ensure your project is a success.
Drafting Design
Custom architectural drafting for your Junior ADU. We create precise floor plans that maximize your existing footprint while meeting all California JADU requirements.
- Custom Floor Plans
- Structural Elevations
- Detailed Sections
- Construction Docs
As-Built Drawings
Accurate documentation of your existing home structure. Essential for JADU conversions to ensure seamless integration with your primary residence.
- Existing Conditions
- Precise Measurements
- Foundation Plans
- Structural Mapping
Site Plans
Detailed property layouts required for city approval. We ensure your Junior Accessory Dwelling Unit complies with all local setbacks and zoning.
- Property Layout
- Setback Compliance
- Utility Connections
- Parking Analysis
Plan Permit Processing
We handle the entire JADU permit process. Our team navigates the bureaucracy to secure your building permits faster and with less stress.
- City Submissions
- Plan Check Management
- Correction Handling
- Final Approval
Plan Corrections
Specialized support for rejected plans. We fix corrections for JADU projects to get your construction back on track quickly.
- Code Analysis
- Design Re-optimization
- Fast Re-submission
- Compliance Fixes
3D Virtual Tours
Visualize your Junior ADU transformation before construction starts. Experience your new living space in realistic 3D.
- Interior Walkthroughs
- Realistic Textures
- Space Planning
- Design Confidence
Home Remodeling
Complete interior design for your JADU conversion. We optimize small spaces for maximum comfort and modern functionality.
- Full Interior Design
- Kitchenette Layouts
- Space Optimization
- Material Specs
Custom Home Design
Expert design for major additions and JADU integrations. We ensure your new unit feels like a premium part of your custom home.
- New Construction Plans
- Master Suite Design
- JADU Integration
- Luxury Finishes
Trusted Contractors
We collaborate with experienced, vetted contractors who are familiar with our Junior ADU plans and standards. They help bring each JADU project to life with efficiency, accuracy, and attention to detail.
- Carefully selected professionals
- Long-standing partnerships
- Quality craftsmanship
- Built according to plan
What Our Clients Say
Homeowners across California trust us for their Junior ADU projects.
⭐⭐⭐⭐⭐
“Jean-Prescott Studio made our JADU conversion so easy. They handled the permits and the design was perfect for the small space. Our rental income started immediately!”
Rob S. – Los Angeles
JADU Conversion
⭐⭐⭐⭐⭐
“We needed a space for my mother-in-law. The JADU design they created felt like a luxury suite. Their knowledge of California laws is truly impressive.”
Natalia A. – San Francisco
Junior ADU Design
⭐⭐⭐⭐⭐
“Excellent service for our JADU project. They fixed our plan corrections quickly and got us through the city. Professional and highly recommended!”
Matt D. – San Diego
JADU Permits
Junior Accessory Dwelling Units FAQs
Everything you need to know about Junior Accessory Dwelling Units in California.
What is a JADU (Junior Accessory Dwelling Unit)?
A JADU is a small living unit (up to 500 sq. ft.) created within the walls of an existing single-family home. It must have its own entrance and a basic kitchen (efficiency kitchen), and it can share a bathroom with the main house.
How much does a JADU conversion cost in California?
The investment for a JADU conversion typically ranges from $60,000 to $120,000. Since it stays within the existing footprint, it is often the most affordable way to add a permitted living unit to your home.
Do I need a permit for a JADU in California?
Yes, all JADU conversions require building permits. We specialize in drafting design and plan permit processing to ensure your project meets all California safety and zoning codes.
Can I have both an ADU and a JADU on my property?
In many California cities, you can have one JADU (within the house) and one detached ADU on the same lot. This is a powerful way to maximize your property’s rental potential.
What are the parking requirements for a JADU?
Under California state law, no additional parking is required for a JADU. This makes it an ideal solution for homeowners with limited space.
How long does the JADU design and permit process take?
The design phase usually takes 2-4 weeks. City permit approval for a JADU can take 8-16 weeks depending on your local planning department’s workload.
Have More Questions? Find Answers in Our FAQ Section!
JADU Blog & Planning Resources in California
Explore expert tips and practical guidance to plan your Junior ADU in California with clarity and confidence.
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How Much Does an ADU Permit Cost in California? A Complete Guide
Planning to build an ADU in California? It’s essential to understand the permit costs involved to avoid surprises. Permit fees…
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How SB 13 Is Changing the Rules for ADU Permits in California
Navigating ADU permits in California used to be a headache—long wait times, high fees, and unclear rules. But thanks to…
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Looking to buy a home in California? CalHFA offers a range of affordable mortgage options, down payment assistance, and support…
Let’s build something meaningful together. Reach out now!
Send us a message today and discover why we’re among the most trusted names in California home construction. Your dream deserves more than generic plans, it deserves precision, passion, and a personal touch.
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