I also think of a multi family unit as having a multiplier or things to go wrong, two water heaters, two sets of people to chase for rents etc.

If the ARV is $290k, then I would multiply that by 0.8, or $232,000. 

Multiply  the ARV times 75% to get your possible loan amount.  

Hi Mark,If you know how to multiply the GRM and CAP rate, you can use those metrics to see what price you need to get in order to get your desired GRM and CAP rates.

TAX values are all over the place...sometimes too high, sometimes too low, but the best way for analysis is to use either list price or what you expect to pay and multiply by the tax rate. 

Looking at the numbers CAPEX and repairs add a huge amount to the monthly expenses.For instance, this third deal:Monthly Income: $1,100Monthly Expenses $1,134.14Monthly Cashflow: -$34.14Pro Forma Cap: 5.22%NOI: $5,215Total Cash Needed: $11,050Cash on Cash ROI: -3.71%Purchase Cap Rate: $5.73Sale Price: $91,000Closing Costs: $2,500Renovation Costs: $4,550 (5%)TOTAL PROJECT COSTS: $98,050Down Payment: $4,550 (5%)Loan Amount: $87,314.5Loan Points: $864.5 (1%)Amortized: 30 yearsInterest Rate: 5%P&I: 468.72Total Cash Needed: $11,050Property Taxes: $2,184/yr2% Rule: 1.13%Initial Equity: $12,685.50Gross Rent Multiplier: 6.89Debt Coverage Ratio: 0.93Expense Increase: 4%/yrIncome Increase: 5%/yrProperty Value Increase: 4%/yrCash on Cash ROI: YR1 (-3.71%) YR2 (-0.63%) YR5 (2.64%) YR10 (9.76%) YR15 (31.56%)Annualized Total Return: YR1 (2.48%) YR2 (22.27%) YR5 (26.37%) YR10 (26.47%) YR15 (22.20%)Total Profit if sold: YR1 ($274) YR2 ($5,469) YR5 ($11,251) YR10 ($24,701) YR15 ($70,982)Expenses:HOA: $82Insurance: $66Taxes: $182MTG: $468.72 (@5%)TOTAL: $798.72Vacancy: $110 (10%)CAPEX: $190/mo (~2.5%)Repairs & Maint: $380/mo (5%)TOTAL EXPENSES: $1,478.72These expenses are different than the $1,134.14 mentioned early on.

Multiply that by 4 or 5 (20 or 25 days occupied) to see what you could get for a month on AirBnb. 

The 70% rule states that I'd you take the property's ARV, multiply by 70% and then subtract rehab costs, you have a rough idea of what you can pay for the property.

Then, multiply that number by 3.5%, and that can be your immediate savings goal.

.$2,135.00MONTHLY INCOME$1,694.08MONTHLY EXPENSES$440.92MONTHLY CASHFLOW14.08%PRO FORMA CAP$9,853.40NOI$22,125.00TOTAL CASH NEEDED23.91%CASH ON CASH ROI13.59%PURCHASE CAP RATEExpensesIncome50% RuleTotal operating expenses:Mortgage expenses:Vacancy:$170.80Repairs:$213.50CapEx:$106.75Electricity:$50.00Water & Sewer:$162.00Insurance:$120.00Management:$213.50P&I:$380.20Property Taxes:$277.33$72,500PURCHASE PRICEPurchase Closing Costs$2,000.00Estimated Repairs$2,000.00Total Project Cost$76,500.00After Repair Value$70,000.00 Down Payment$18,125.00Loan Amount$54,375.00Loan Points$0.00Amortized Over30 yearsLoan Interest Rate7.500%Monthly P&I$380.20Total Cash Needed$22,125.00 Financial Info2.79%2% RULE $15,625.00TOTAL INITIAL EQUITY2.83GROSS RENT MULTIPLIER 2.16DEBT COVERAGE RATIOAnalysis Over Time3% /yearEXPENSE INCREASE 3% /yearINCOME INCREASE 2% /yearPROPERTY VALUE INCREASEYear 1Year 2Year 5Year 10Year 15Year 20Year 30Total Annual Income$25,620.00$26,388.60$28,835.54$33,428.29$38,752.55$44,924.83$60,375.21Total Annual ExpensesOperating ExpensesMortgage Payment$20,328.97$15,766.60$4,562.37$20,801.97$16,239.60$4,562.37$22,307.82$17,745.45$4,562.37$25,134.21$20,571.84$4,562.37$28,410.77$23,848.40$4,562.37$32,209.20$27,646.83$4,562.37$41,717.40$37,155.03$4,562.37Total Annual Cashflow$5,291.03$5,586.63$6,527.71$8,294.08$10,341.78$12,715.62$18,657.81Cash on Cash ROI23.91%25.25%29.50%37.49%46.74%57.47%84.33%Property Value$71,400.00$72,828.00$77,285.66$85,329.61$94,210.78$104,016.32$126,795.31Equity$17,526.25$19,494.41$25,837.43$38,134.84$53,197.53$71,986.64$126,795.31Loan Balance$53,873.75$53,333.59$51,448.23$47,194.77$41,013.25$32,029.67$0.00Total Profit if Sold *-$1,449.73$6,062.22$30,895.02$80,784.39$143,073.13$220,258.21$432,774.81Annualized Total Return-6.55%12.87%19.10%16.62%14.34%12.71%10.60%