Just wanted to share how glad I am about having started a separate savings account for capital expenditures. 

i cant tell you what you should try for but here is what i shoot for.House less than 15 years old.B+ areaAt least $500 month after PITILess than $10,000 of my cash invested via brrrrThis leaves room for mx, cap expenditures, and someone to manage if i choose.If i was buying older properties i would either want to do better on cash flow or be able to rehab the major components to new..rnew, ac, elec, ectI have bought 3 properties in 2015 that fit this profile except for the cash invested on one was closer to 17,000.

Don't we already deduct maintenance costs from our rental income, and depreciate large expenditures separately?

If you can get a full brick rental with a 30 year (architectural) roof your long term capital expenditures will be lower. 

Can you share your analysis (Vacancy, Capital Expenditure, Maintenance, Property Management, Insurance, Tax)...?"

There's also a slight possibility they didn't know what a rent roll meant - or thought you were asking for expenditures as well. 

Alex,Nothing beats the real data, but if you do not have that, you can perform a quick triage using 50% of your revenue as operating expenses ... if you carry the heating - in your area, cooling - costs via a central HVAC, you might want to allow 60% to be safe.That which remains after the operating costs - the Net Operating Income - is the pool you have to fund your debt service and your capital expenditures reserve {for things that eventually wear out: HVAC, roof, windows, etc.}.  

Local knowledge can be vital, and vaguely similarly described comps can be very misleading when trying to establish what a particular property is REALLY worth.How much capital expenditure will be soon required in order to keep it habitable?

You should confirm your debt-to-income by pulling your credit report and summing up all of your documented monthly expenditures.

@Joshua Solomon I think your talking about Capital expenditures.