Construction ROI analysis

Will Your ADU Pay for Itself?

Model the full cost of building an ADU or home addition against the rental income and property value increase it creates. See payback period, cash-on-cash return, and 10-year projections before you break ground.

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6
Project Types
10-Year
Projections
3
Financing Options
Instant
Analysis

What You Get

Everything you need, built for real estate investors.

Construction Cost Estimator

Build a detailed cost breakdown by project type, square footage, per-sqft cost, permit fees, design fees, utility connections, site prep, landscaping, and contingency. Compare detached ADUs, attached additions, garage conversions, floor additions, and basement build-outs.

Rental Income Projector

Project monthly and annual net income from your new unit after vacancy, added insurance, property taxes, maintenance, and utilities. See how quickly rental income offsets your total investment and when you hit break-even.

ROI & Payback Calculator

Compare total build cost against added property value and cumulative rental income. View cash-on-cash return, net ROI, payback period, and a full 10-year projection that accounts for financing costs if you use a HELOC or construction loan.

Simple, Transparent Pricing

Choose the plan that works for you.

Monthly

$99.00
per month
  • Full construction cost estimator with 6 project types
  • Permit, design, utility, site prep, and landscaping line items
  • Adjustable contingency percentage
  • Rental income projections with vacancy and expense deductions
  • Cash, HELOC, and construction loan financing scenarios
  • Cash-on-cash return and payback period calculations
  • 10-year cumulative ROI projections
  • Auto-populate from existing properties
  • Unlimited analyses per property
  • All future updates included
Subscribe Monthly
Best Value

Yearly

$999.00
per year
Save $189.00/yr
  • Full construction cost estimator with 6 project types
  • Permit, design, utility, site prep, and landscaping line items
  • Adjustable contingency percentage
  • Rental income projections with vacancy and expense deductions
  • Cash, HELOC, and construction loan financing scenarios
  • Cash-on-cash return and payback period calculations
  • 10-year cumulative ROI projections
  • Auto-populate from existing properties
  • Unlimited analyses per property
  • All future updates included
Subscribe Yearly

Features and pricing are subject to change as we continue to improve the product.

How It Works

1

Define Your Project

Select the project type -- detached ADU, attached addition, garage conversion, room addition, floor addition, or basement conversion. Enter square footage, cost per sqft, and soft costs like permits, design, and site prep.

2

Set Income & Financing

Enter expected monthly rent, vacancy rate, and ongoing expenses. Choose financing: pay cash, tap a HELOC, or use a construction loan with your own rate and term.

3

Review Your ROI

See total build cost, monthly net income, payback period, cash-on-cash return, and a 10-year projection. Compare the build cost against the estimated property value increase to know if the project makes sense.

Explore Features

Dive deeper into what each feature offers.

Construction Cost Estimator

Build a line-by-line cost breakdown for any ADU or addition project with adjustable soft costs and contingency.

Learn more →

Rental Income Projector

Project net rental income after vacancy and ongoing expenses to see how fast the new unit pays for itself.

Learn more →

ROI & Payback Calculator

See cash-on-cash return, net ROI, payback period, and 10-year cumulative projections for your project.

Learn more →

Why Investors Choose This Tool

Complete Cost Breakdown

Six project types, five soft-cost categories, and adjustable contingency -- no hidden costs.

Real Cash Flow Numbers

Net income after vacancy, taxes, insurance, maintenance, and utilities -- not just gross rent.

10-Year Projections

See cumulative income, payback timeline, and total ROI over a full decade.

Sample ADU ROI Analysis

600 sqft detached ADU: $200/sqft build, $1,400/mo rent, cash financing

Sample Results
Total Build Cost $143,000
Net Monthly Income $1,105/mo
Annual Net Income $13,260
Cash-on-Cash Return 9.3%
Payback Period 7.2 years
Estimated Value Increase +$165,000
10-Year Total ROI +$89,600

Should You Build That ADU?

Run every cost, income, and financing scenario before you break ground. Know your payback period, cash-on-cash return, and 10-year ROI in seconds.

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