How BRRRR Strategy Calculator Works
The BRRRR Strategy Calculator models the complete Buy, Rehab, Rent, Refinance, Repeat cycle used by real estate investors to build portfolios with minimal capital tied up in each property. This strategy allows investors to recycle their initial investment by forcing appreciation through renovations, then pulling equity out via a cash-out refinance to fund the next acquisition.
The calculator walks you through each phase: purchasing a distressed property below market value, estimating rehab costs to bring it to full after-repair value (ARV), projecting rental income once stabilized, and modeling the cash-out refinance based on the new appraised value. The key metric is how much of your original capital you recover at refinance—a successful BRRRR returns 100% or more of your invested cash while retaining a cash-flowing rental property.
Critical to the analysis is the refinance loan-to-value (LTV) ratio, typically 70-75% for investment properties. The calculator shows whether your all-in cost (purchase + rehab + closing costs + holding costs) falls below the refinance proceeds, and what your ongoing cash flow looks like with the new, higher mortgage balance.
The tool also projects returns over a 5-10 year hold period including appreciation, rent growth, and principal paydown. For investors considering the owner-occupant version of this strategy, the House Hacking Calculator models live-in scenarios, while the Airbnb vs Long-Term Rental Analyzer tool helps optimize rental income on stabilized properties.
Key Terms Explained
- After-Repair Value (ARV)
- The estimated market value of a property after all renovations are completed, determined by comparable sales of similar updated properties in the area.
- Cash-Out Refinance
- Replacing an existing mortgage with a new, larger loan based on the property's current appraised value, allowing the investor to extract equity as cash.
- Loan-to-Value Ratio (LTV)
- The percentage of a property's appraised value that a lender will finance; investment property cash-out refinances typically max at 70-75% LTV.
- Forced Appreciation
- Increasing a property's value through strategic renovations and improvements rather than waiting for market appreciation.
- Holding Costs
- Expenses incurred during the rehab period before the property generates income, including loan payments, insurance, taxes, and utilities.
- Seasoning Period
- The minimum time a lender requires you to own a property before allowing a cash-out refinance, typically 6-12 months for investment properties.
Who Needs This Tool
Analyzing whether a distressed duplex can be purchased, renovated, and refinanced with enough proceeds to recover the down payment and rehab funds for the next deal.
Converting from fix-and-flip to BRRRR to build long-term wealth through cash-flowing rentals instead of one-time flip profits.
Modeling BRRRR deals in affordable markets where the purchase-plus-rehab cost is low enough relative to ARV to achieve full capital recovery at refinance.
Two investors pooling capital to BRRRR a property, calculating how quickly they can recycle funds into the next acquisition.
Methodology & Formulas
All-in cost = purchase price + rehab budget + buying closing costs + holding costs during rehab (loan payments, utilities, insurance, taxes). ARV is user-provided based on comparable sales. Refinance proceeds = ARV × LTV ratio (typically 75%) - refinance closing costs. Capital left in deal = all-in cost - refinance proceeds. Cash-on-cash return = (annual NOI - annual debt service on new loan) / capital left in deal. If refinance proceeds exceed all-in cost, the investor achieves "infinite return" (positive cash flow with zero capital remaining). Monthly cash flow = gross rent - PITI - vacancy - maintenance - capex - management.
Pro Tips
- The 70% rule is your safety margin: never pay more than 70% of ARV minus rehab costs. This ensures you can refinance out most or all of your capital.
- Get a contractor estimate AND add 20% contingency before committing—rehab cost overruns are the number one reason BRRRR deals fail to return full capital.
- Build relationships with portfolio lenders and credit unions that have shorter seasoning periods (some allow refinance at 3-6 months vs. the standard 12 months).
- Factor in 2-4 months of holding costs during rehab and lease-up; every month of vacancy erodes your returns and increases capital left in the deal.
- Document all improvements with before/after photos and receipts—this supports your ARV claim during the appraisal and can justify a higher refinance value.