ADU & JADU Construction in Southern California
Affordable, Flexible Living Spaces
Good Neighbor Construction specializes in designing and building Accessory Dwelling Units (ADUs) and Junior Accessory Dwelling Units (JADUs) across Riverside, San Bernardino, Los Angeles, and Orange Counties.
With California’s housing crisis and rising demand for multi-generational living, rental income, or flexible space, an ADU/JADU is the perfect solution, and we make the process effortless.
What Are ADUs & JADUs?
​ADU (Accessory Dwelling Unit)
A standalone or attached secondary home (up to 1,200 sq. ft.) on your property. Ideal for rentals, family, or guests.
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JADU (Junior Accessory Dwelling Unit)
A smaller unit (max 500 sq. ft.) within or attached to your primary home, often converted from a garage or basement.
Benefits to Building an ADU
Our ADU/JADU Services
Pre-Construction Consultation
Assess your property’s potential (garage conversion? backyard cottage?).
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Design & Permitting
We create plans and submit for approvals.
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Construction
High-quality builds, from studio ADUs to 2-bedroom units.
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Turnkey Finish
Plumbing, electrical, and landscaping included.
ADU Renovation
California ADU/JADU FAQs
1. "How much does an ADU cost in Riverside County?"
Typical range: 150K–150K–300K (varies by size/materials). We offer cost-effective prefab and custom options.
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2. "Can I convert my garage into a JADU in San Bernardino?"
Yes! JADUs are perfect for garage conversions. We’ll ensure it meets CA building codes.
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3. "Do I need parking for an ADU in Los Angeles?"
Not usually. Most properties are exempt under state law.
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4. "How long does ADU permitting take in Orange County?"
60–90 days on average. We expedite the process where possible.
