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Find Junior ADU (JADU) Contractors Near You

A Junior ADU (JADU) is a small unit of up to 500 sqft created within your existing home’s footprint. JADUs are the most affordable ADU option at $20,000–$80,000.

2,860 contractors found

About Junior ADU (JADU)

Junior ADUs are carved out of existing space within your primary residence — often a bedroom, attached garage, or underutilized area. California law allows JADUs up to 500 sqft, and you can build both a JADU and a standard ADU on the same property. JADUs require a separate entrance and an efficiency kitchenette, with owner occupancy typically required.

Typical Cost Range

$20,000 – $80,000

Timeline

3–6 months

Junior ADU (JADU) Pros and Cons

Pros

  • +Most affordable ADU type ($20K–$80K)
  • +Fastest to build — uses existing space
  • +Can build a JADU and a standard ADU on the same lot
  • +Simpler permit process than full ADU

Cons

  • –Limited to 500 sqft maximum
  • –Must be within your existing home’s footprint
  • –Owner occupancy typically required (CA)
  • –Efficiency kitchenette only — no full kitchen

Browse Junior ADU (JADU) Contractors by State

Florida2,859 contractorsCalifornia1 contractors

Top Cities for Junior ADU (JADU)

Miami, FL (193)Tampa, FL (142)Orlando, FL (90)Jacksonville, FL (87)Naples, FL (77)Sarasota, FL (61)Fort Myers, FL (60)Cape Coral, FL (55)Fort Lauderdale, FL (52)Boca Raton, FL (41)Clearwater, FL (37)Bradenton, FL (37)

Top Rated Junior ADU (JADU) Contractors

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Schick Construction, LLC

Orlando, FL

★5.0(353)

Schick Construction, LLC — licensed ADU contractor in Orlando, FL.

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Innovative Mitigation and Restoration LLC

St. Petersburg, FL

★5.0(123)

Innovative Mitigation and Restoration LLC — licensed ADU contractor in St. Petersburg, FL.

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Innovative Mitigation and Restoration LLC

St. Petersburg, FL

★5.0(123)

Innovative Mitigation and Restoration LLC — licensed ADU contractor in St. Petersburg, FL.

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Supro Construction and Management LLC

Tampa, FL

★5.0(113)

Supro Construction and Management LLC — licensed ADU contractor in Tampa, FL.

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ObCon Proxy LLC

Miami, FL

★5.0(110)

ObCon Proxy LLC — licensed ADU contractor in Miami, FL.

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Construction Corps, Inc

Clearwater, FL

★5.0(106)

Construction Corps, Inc — licensed ADU contractor in Clearwater, FL.

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Construction Corps, Inc

Clearwater, FL

★5.0(106)

Construction Corps, Inc — licensed ADU contractor in Clearwater, FL.

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OPTIMAL GREEN SOLUTIONS, LLC

Orlando, FL

★5.0(105)

Optimal Green Solutions, Llc — licensed ADU contractor in Orlando, FL.

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Paul Davis Restoration of Miami-Central

Miami, FL

★5.0(99)

Paul Davis Restoration of Miami-Central — licensed ADU contractor in Miami, FL.

View All 2,860 Contractors →

Frequently Asked Questions

What is a Junior ADU (JADU)?▼
A Junior ADU (JADU) is a small dwelling unit of up to 500 sqft created within the existing footprint of a single-family home. It requires a separate entrance and an efficiency kitchenette.
What is the difference between an ADU and a JADU?▼
ADUs can be up to 1,200 sqft and built as detached, attached, or converted structures. JADUs are limited to 500 sqft and must be created within the existing home. JADUs are cheaper and faster to build.
Can I build both a JADU and an ADU?▼
Yes, California law allows you to build both a JADU (within your home) and a standard ADU (detached or attached) on the same single-family property.
How much does a JADU cost?▼
JADUs typically cost $20,000 to $80,000 since they use existing space within your home. This makes them the most affordable ADU option available.

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