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.
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.
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.
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.
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
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.