Step 1 of 7
$145,000 – $295,000
Select your ADU type to begin
ADU Cost Calculator

What type of ADU are you building?

Select the option that best fits your project

Most Popular
Detached ADU
Separate standalone structure in your backyard
$280 – $400 / sqft
Attached ADU
Connected to your existing home
$260 – $380 / sqft
Best Value
Garage Conversion
Transform your existing garage
$250 – $375 / sqft
Lowest Cost
Junior ADU (JADU)
Convert space within your existing home
$200 – $350 / sqft

How large will your ADU be?

Drag the slider to set the square footage

800 sqft
400 1,200

Bedrooms & Bathrooms

This helps estimate plumbing costs and rental income

Bedrooms
Studio
1 Bed
2 Bed
3 Bed
Bathrooms
1 Bath
1.5 Bath
2 Bath

Choose your finish level

Higher finishes increase both cost and property value

Standard
Builder-grade materials, functional design
Baseline cost
+$0
Most Popular
Premium
Upgraded finishes, modern aesthetic
+15% upgrade
+$0
Luxury
High-end materials, custom design
+35% upgrade
+$0

Select features & add-ons

Required items are auto-selected. Toggle optional features.

Enter your property address

We'll pull real property data to refine your estimate

We serve Los Angeles, Orange, and Ventura counties
Skip — show estimate without property data

Analyzing your property...

Pulling real data for a personalized estimate

Detecting jurisdiction & zoning
Fetching property records
Checking fire hazard zones
Checking flood zones
Calculating your personalized estimate

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