Free Basic Demo + Paid BRRRR Underwriting

Analyze rental deals fast, then move into full BRRRR underwriting when the deal is real

Run the numbers on rent, rehab, refinance, cash flow, DSCR, cap rate, LTV, and cash left in the deal without bouncing between spreadsheets. Start with the free Basic rental property calculator, then upgrade into full BRRRR underwriting when you need deeper refinance and rehab analysis.

Create Account
No account required for the Basic demo Save properties and resume analyses Paid plans unlock full BRRRR underwriting

Start Free

Open the Basic calculator instantly from any address.

Save Winners

Authenticated users can save properties and resume analyses.

Go Deeper

Paid plans unlock BRRRR modeling, buy box scoring, and export.

Deal Snapshot

123 Example St, Columbus, OH

Live Metrics

Deal Structure

Purchase$142,000
Rehab$28,000
ARV$230,000
Loan$172,500

Decision Metrics

Cash Flow

$428

DSCR

1.31

Cap Rate

7.4%

LTV

75.0%

Move from quick screening to full BRRRR underwriting without leaving the product.

Model

Purchase, rehab, refinance, and rental operations

Track

Units, rents, vacancy, expenses, financing, and ARV

Decide With

Cash flow, NOI, DSCR, cap rate, equity, LTV, and total return

Organize

Saved properties, buy box criteria, and account-based access

How It Works

From first look to full underwriting in three simple steps

1

Try a deal instantly

Search an address and open the Basic calculator in demo mode with no signup friction.

2

Create an account when a deal is worth keeping

Save properties, reopen underwriting later, and keep your pipeline in one place.

3

Upgrade only for deeper underwriting

Unlock BRRRR-specific assumptions, buy box scoring, advanced metrics, and PDF export when you need them.

Two Underwriting Modes

Start with a free rental property calculator, then graduate into a full BRRRR calculator

Start with Basic underwriting for first-pass rental analysis, then move into BRRRR underwriting when refinance strategy, rehab assumptions, and cash left in the deal become the real decision.

Basic Calculator

Fast rental screening

Quick answers for the deals that need a first pass.

+Guest-accessible demo mode from any searched address
+Units, loan, renovation cash, taxes, insurance, maintenance, and other expenses
+Quick outputs for rent, NOI, mortgage, cash flow, DSCR, cap rate, and cash-on-cash
+Autosave for signed-in users

BRRRR Calculator

Full refinance-aware underwriting

Go deeper when refinance strategy and capital recycling drive the decision.

+Purchase, hard money, down payment, rehab, acquisition costs, ARV, and appreciation inputs
+Operating expense detail plus refinance loan assumptions
+Equity, LTV, cash recovery, net position, and year-1 total return views
+Buy box scoring and PDF export on supported plans

Paid Features

Unlock the tools built for deeper deal analysis

When a quick screen turns into a serious deal, these are the tools that help you underwrite with more confidence.

Advanced Analytics

See the deeper metrics

Paid plans unlock the advanced numbers that are visible but gated on free.

Buy Box

Score fit against your criteria

Configure thresholds for price, returns, leverage, units, and more.

BRRRR Access

Model the full cycle

Move from basic screening into refinance-aware underwriting without rebuilding the deal.

PDF Export

Share and document decisions

Export analysis outputs when you need something lender-, partner-, or archive-friendly.

Pricing

Start free, then pay for depth and volume

Start with the free calculator, then choose a plan when you want more saved properties and deeper underwriting features.

Free

$0 /mo

Best Place to Start

Great for trying the calculator, screening deals, and deciding if it fits your underwriting process.

+ Up to 3 saved properties
BRRRR underwriting
Advanced analytics
Buy box scoring
PDF export

Investor

$12 /mo

Save $45/yr (31%) with annual

Best for investors who want the full BRRRR workflow, deeper metrics, and better deal visibility.

+ Up to 25 saved properties
+ BRRRR underwriting
+ Advanced analytics
+ Buy box scoring
+ PDF export

Portfolio

$24 /mo

Save $89/yr (31%) with annual

Best for investors who want the full BRRRR workflow, deeper metrics, and better deal visibility.

+ Up to 200 saved properties
+ BRRRR underwriting
+ Advanced analytics
+ Buy box scoring
+ PDF export

FAQ

Common questions from rental and BRRRR investors

A quick overview of what the calculator does, how the two underwriting modes work, and when it makes sense to create an account or upgrade.

What does the free demo include?
The free demo opens the Basic rental property calculator. You can search an address and analyze units, loan assumptions, renovation cash, expenses, NOI, monthly cash flow, DSCR, cap rate, and cash-on-cash without creating an account.
What is the difference between the Basic calculator and the BRRRR calculator?
The Basic calculator is built for quick rental property screening. The BRRRR calculator goes deeper by adding purchase price, rehab, acquisition costs, ARV, refinance loan assumptions, hard money, appreciation, LTV, equity, cash recovery, and other refinance-aware return metrics.
Can I save rental property analyses?
Yes. After creating an account, you can save properties, reopen prior analyses, and continue underwriting later. Property limits depend on the free tier or your paid plan.
What metrics does Brrrrfect calculate?
Brrrrfect calculates cash flow, NOI, monthly mortgage, DSCR, cap rate, cash-on-cash return, LTV, equity position, cash recovery, net position, total return, and per-unit efficiency metrics depending on the underwriting mode and plan.
Who is this for?
Brrrrfect is built for rental investors who want to screen deals quickly, save the ones worth pursuing, and upgrade into full BRRRR underwriting when refinance assumptions and buy box fit start to matter.

Start Now

Screen a deal for free. Save it when it deserves more time.

Start with the free calculator, then create an account when you want to save properties and keep underwriting.