In Florida, most adu projects cost between $50,000 and $200,000 per job, with a typical price near $100,000. Local labour, permits and materials move the final price, so treat the range below as a planning guide.
Typical adu cost
$50,000 – $200,000
per job · typical $100,000
A general planning range, not a quotation.
Adu cost breakdown
- Garage conversion$30,000 – $80,000typical $50,000
- Attached ADU (addition)$80,000 – $200,000typical $120,000
- Detached ADU (new build)$100,000 – $300,000typical $180,000
At a glance
- Typical range$50,000 – $200,000
- Unitper job
- Cities covered121
What ADUs costs
Costs cover design, permits, construction, and utilities for adding a separate living unit on your property. Detached units are pricier than attached or garage conversions. Local regulations and site conditions significantly affect price.
By city in Florida
- Alafaya
- Altamonte Springs
- Apopka
- Aventura
- Boca Raton
- Bonita Springs
- Boynton Beach
- Bradenton
- Buenaventura Lakes
- Cape Coral
- Clearwater
- Clermont
- Coconut Creek
- Coral Gables
- Coral Springs
- Country Club
- Cutler Bay
- Davie
- Daytona Beach
- DeLand
- Deerfield Beach
- Delray Beach
- Deltona
- Doral
- Dunedin
- Egypt Lake-Leto
- Estero
- Fort Lauderdale
- Fort Myers
- Fort Pierce
- Fountainebleau
- Gainesville
- Greenacres
- Hallandale Beach
- Hialeah
- Hollywood
- Homestead
- Homosassa Springs
- Horizon West
- Jacksonville
- Jupiter
- Kendale Lakes
- Kendall
- Kendall West
- Kissimmee
- Lakeland
- Land O' Lakes
- Largo
- Lauderdale Lakes
- Lauderhill
- Leesburg
- Lehigh Acres
- Margate
- Meadow Woods
- Melbourne
- Miami
- Miami Beach
- Miami Gardens
- Miramar
- Navarre
- North Fort Myers
- North Lauderdale
- North Miami
- North Miami Beach
- North Port
- Oakland Park
- Ocala
- Ocoee
- Orlando
- Ormond Beach
- Oviedo
- Palm Bay
- Palm Beach Gardens
- Palm Coast
- Palm Harbor
- Panama City
- Pembroke Pines
- Pensacola
- Pine Hills
- Pinellas Park
- Plant City
- Plantation
- Poinciana
- Pompano Beach
- Port Charlotte
- Port Orange
- Port St. Lucie
- Princeton
- Richmond West
- Riverview
- Riviera Beach
- Royal Palm Beach
- Sanford
- Sarasota
- Sebring
- South Miami Heights
- Spring Hill
- St. Augustine
- St. Petersburg
- Sunrise
- Tallahassee
- Tamarac
- Tamiami
- Tampa
- The Acreage
- The Hammocks
- The Villages
- Titusville
- Town 'n' Country
- University
- Valrico
- Vero Beach South
- Wellington
- Wesley Chapel
- West Palm Beach
- Westchester
- Weston
- Winter Garden
- Winter Haven
- Winter Springs
- Zephyrhills
Frequently asked questions
How much does an ADU cost on average?
Nationally, $100,000–$200,000 for a typical 600-1,200 sq ft unit. Garage conversions may cost less, while high-end detached units exceed $250,000.
What drives ADU costs?
Size, type (attached/detached), foundation, plumbing/electrical runs, and local permit fees. Site conditions like sloping land or need for a new sewer line increase costs.
How can I save on ADU construction?
Use prefabricated units, convert existing space, shop for contractors, and finance with a HELOC or construction loan. Check for local grants or incentives for ADUs.