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Junior ADUs (JADUs)

A curated directory of vetted builders experienced with Junior ADUs — up to 500 sq ft created within the walls of the existing home. builders

 

 

  
 

 

  
 

 

  
 

 

  
 

 

  
 

 

  

Frequently Asked Questions

How do I choose a builder for a jadu (junior adu) project?
Shortlist only contractors who are actively CSLB-licensed (Class B), bonded, and insured, with verifiable recent jadu (junior adu) projects and real permitting experience. Our directory highlights each builder's specialties, license status, and CSLB number so you can compare confidently — then request an intro to a verified builder matched to your project.
What should I expect from a jadu (junior adu) builder?
A qualified jadu (junior adu) builder should provide a fully itemized fixed-price quote (with utility connections named as a line item), handle permitting for you, and collect no more than a $1,000 deposit up front — California's legal cap. Be wary of any "material reservation" or "lumber-lock" fee that pushes your up-front payment higher; that's a red flag for an illegal deposit.
How long does a jadu (junior adu) project take?
Timelines vary by scope and city review, so be skeptical of anyone guaranteeing a fixed "60-day approval" — that statutory deadline applies only to a complete application and isn't a real-world build timeline. In Los Angeles, custom ADU permitting realistically runs about 3–6 months, with design-to-move-in around 8–14 months. A verified jadu (junior adu) builder will give you an honest, project-specific schedule.