That being said, many investors mix capital expenditures with expenses for certain tax strategies, so understand before your jaw hits the floor that many T12s will be wildly inaccurate. 

The new construction is obviously not going to need any repairs, better not need any capital expenditures (except a fridge if the new house doesn't come with one, but Best Buy offers extended warranties if you buy one).

The goal would be to have positive cash flow at the end of the month after you have paid your mortgage, cap expenditures, property Mgt ect.

I think most people would also try to set aside a portion of the rent for possible repairs, capital expenditures, vacancies and property management.

The second expense you should factor into your analysis is Capital Expenditures also know as Cap Ex.

I have created a spreadsheet that considers repair and maintenance (~between 5% to 10%) and capital expenditure (~7.5%).

@Vernon BrownI'm not sure if you've accounted for things such as vacancy, repairs, capital expenditures, property management, etc... when finding your numbers.

.: 5% (I've read to use this %)Capital Expenditures: Unsure (I'm not even sure what this field is for)Property Mgmt: 10%FUTURE ASSUMPTIONSAnnual Income Growth: 2% - saw Brandon Turner use these numbers in a webinar, unsure here.Annual PV Growth: 2%Annual Expenses Growth: 2%Sales Expenses: 10%Any advice or guidance is much appreciated.

The vast majority of these people with 1-3 years experience on some SFRs have not in any way shape or form experienced the long term realities of landlording or capital expenditures.  

They are new construction, so there will be no maintenance expense in the first year, little in the following few years and very little capitol expenditures for several years.