Divide the replacement price by the number of useful years left and that is how much to put aside for that item.

@Scott TrenchNot the "wishful thinking worst-case scenario" with nuts and sprinkles and whipped cream.The real worst-case scenario.I keep finding this business is clearly divided between the people who work to avoid lying to themselves and the broke.

Also make sure that you get it in writing that the deposit is equally from all four and at the end of the lease the remaining balance of the lease will be divided equally amongst the four of them. 

Here are my calculations so far:Purchase Price: 162,500Closing Costs: ~2K - 3% of Purchase Price + 3K in Seller CommissionsDown Payment: $8,125 - 5% of Purchase PriceInterest Rate: 4%Loan Term: 360 Mo.Rental Income: $1K (If I Include my cost of living, I add $450 a month because I currently renting out a room in a 3/2 house for 535/ month I can bring this number up to $1,450)Taxes: $216/ monthInsurance: $121/ monthPMI: $115/ monthVacancy: $84/ monthRepairs: $102/ monthHOA: $10/ monthMonthly Payment Due Each Month which includes all above: $1,385If rental income is ~1,450, I’m clearing $65 a month or $780 a year which divided by the down payment and closing costs I am earning a ~8% return on my investment.

Here's a reference: https://www.nolo.com/legal-enc...You can use any reasonable method for dividing these expenses.

Let's say $3,600k is what will be needed (just a guess here for easy math) Divide 3,600k by 180 months. $20 a month is what is needed.  

As I read forums on BP it seems there is a divide between cash flow and appreciation.

Net Profit divided by purchase priceso you make 100k a year net off of a property you bought for 1m, your cap rate is 10%

It appears they calculate gross ROI based on gross income divided by property price.

I would save it all until I could sleep at night knowing I have enough money in the bank to cover the worst case scenario.According to a common "formula" used on BP (50%), you would divide the 1,400 in half to get your expected non-financing expenses (everything but P&I).