ADU Cost Calculator

The first step to a successful project is knowing your numbers

Tell Us About Your Backyard

Zip Code

Building and permitting costs vary by location

What is your desired construction type?
What are your property conditions?
How easy is it to access the building site with heavy machinery?

Build Your ADU

Desired Architectural Style
Bedrooms
Bathrooms
Kitchen
Square Footage

ft²

Build Quality
Popular Add-Ons
(Select as many as desired)
Utility Hookups
(Select all that apply)

Your ADU Cost Estimate

Hard Costs
Site Prep/Foundation$4,250 ― $5,750
Utilities$4,250 ― $5,750
Construction$59,500 ― $80,500
Total Hard Costs$68,000 ― $92,000
Soft Costs
Design/Architecture$0
Boundary Survey$450 ― $600
Permits/Inspections$4,850 ― $6,550
Total Soft Costs$5,250 ― $7,150
Total Costs$73,250 ― $99,150
Cost per ft²:
$183 ― $248
Mortgage*InsuranceTax

Mortgage*: $436

Insurance: $35

Tax: $53

Finance for as low as:
$525/mo.

*Assumes a 30-year mortgage at 6.5% APR and a 20% down payment

Next Step: Get A Free Rental ROI Report

Refine your numbers by analyzing the rents of comparable ADUs and apartments in your neighborhood