BRRRR stands for Buy, Rehab, Rent, Refinance, Repeat. The strategy: buy a distressed property below market value, renovate it, place a tenant, then refinance based on the new, higher appraised value. If the deal is bought right, the refinance returns most — sometimes all — of your original cash, which you then deploy into the next property.
That capital recycling is what makes BRRRR powerful: the same pot of money can acquire property after property. But whether the recycle actually happens is decided the day you make your offer. Here's the math that decides it.
The Break-Even Max Offer
A BRRRR refinance lender will typically lend a percentage of the after-repair appraised value — the refi LTV, often around 75-80% of ARV. Your goal is for that loan to cover everything you put in. Work it backward and you get the break-even max offer:
Break-even max offer = (ARV × refi LTV) − rehab costs − closing costs
Example: ARV of $280,000 at a 75% refi LTV means the refinance produces about $210,000. If rehab will cost $45,000 and combined closing/holding costs run $15,000, your break-even purchase price is $210,000 − $45,000 − $15,000 = $150,000. Pay that or less, and the refinance can return every dollar. Pay $170,000 and, no matter how well the project goes, about $20,000 stays locked in the property.
This is why BRRRR investors sound obsessive about buying deep below market value: the discount at purchase is the strategy. The free Shouldirefi Deal Analyzer computes this break-even offer from your ARV, rehab budget, and LTV assumptions, so you know your ceiling before you negotiate.
Rehab Contingency: The #1 BRRRR Killer Is Overruns
Every experienced rehabber has the same scar tissue: the wall that hid rotten framing, the "quick" electrical fix that became a rewire, the permit that added six weeks. Renovation cost overruns are the single most common reason BRRRR deals fail to recycle capital, because every unbudgeted dollar of rehab comes straight out of the refinance math.
The defense is a rehab contingency of 15-20% on top of your contractor's estimate. Budgeting $45,000 of work? Underwrite the deal at $52,000-$54,000. Two rules make the contingency real rather than decorative:
- Put it in the max-offer math. Calculate your break-even offer using the padded rehab number. If the deal only works without the contingency, it doesn't work.
- Don't spend it on upgrades. The contingency covers surprises, not nicer countertops. If it goes unspent, it becomes profit cushion.
Older properties, full gut jobs, and first projects with a new contractor all justify the top of the range or beyond.
Cash Left in the Deal: The Real Scorecard
After the refinance closes, one number tells you how the BRRRR actually went:
Cash left in deal = total cash in − refinance proceeds
Total cash in is everything: purchase, rehab (including what the contingency actually absorbed), closing costs on both loans, and the holding costs of carrying the property through renovation and any seasoning period. If you put in $215,000 and the refi returns $210,000, you have $5,000 left in the deal — your entire investment in a cash-flowing rental is $5,000. Zero or negative cash left in means a full recycle: all of your capital (or more) came back out, ready for the next deal.
Two honest caveats. First, leaving some cash in a deal isn't failure — a rental that holds $20,000 of your money but cash-flows well can still be a fine investment; it's just a slower recycle. Second, don't force it: pulling the maximum loan on a thin deal can leave the property with negative monthly cash flow, which turns your "infinite return" into a monthly bill. The refinance still has to pass the rent-covers-payment test.
Repeat — Carefully
BRRRR rewards repetition, but each deal deserves the full discipline: conservative ARV from renovated comps, a padded rehab budget, a break-even offer you refuse to exceed, and a cash-left-in projection you'd accept even if the appraisal comes in 5% light.
All figures are estimates for informational purposes only — not financial advice. Consult a qualified professional before making financial decisions.