Example you do 50 a year but have 30 built and ready to go to market to sell in a 3 month span and then do 1 to 2 more every other month to limit exposure and market shifts for the development cycles??

Where I invest I use a cap expense of $250 to $300/month for my units (I used a spreadsheet that took into account cost and expected life span to determine monthly cost of each item and summed it).

Owen,I'm not sure what the span of work is.  

Just to clarify Tae, the property I was buying came up on the title search because the city had levied the fines against the property and over a two year span the fines totaled $26,000. 

It is done by amateurs that have a short life span in this business.  

I used the calculators quite extensively at first, but have since started using a simpler spreadsheet to analyze deals because I found the BP rental calculator to be a bit time consuming to enter the data as it spans multiple web pages.

Lowest price points exist due to cheap original construction.We are still building these new ghettos it will just take them the life span of the home (20 years) for them to "come to life".The circle of life continues.

I had money for a down payment but not for a complete rehab at time of acquisition so I am renovating the house over the span of two years while living in the home.

Eventually he was in jail for a three month span during which time he failed to pay his portion of the rent and we were forced to evict him.In both cases we were in constant contact with both the SEC 8 caseworker and the VASH caseworker.  

@Steven Dreyerhere's an excellent article from BrandonHow to Estimate Future CapEx Expenses on a Rental PropertyYou need to figure out what your expected life span of the different components of your rental unit.Keep in mind, this is just capital expenses.