Digitize physical receipts for easy storage.Additionally, youcan track income and expenses consistently, using software or spreadsheets.I use QuickBooks Online for most of my clients.

Right now, if you can't scrape by at home you can't weather the volatility that physical real estate encompasses.

I've used templates from BP and other sites like Avail as a start and then asked my attorney to incorporate additional language needed for MTRs like the utility caps, monthly cleanings, etc. 

Also gave me his Business articles of incorporation documents, I even went on the IL sec of state website and it is an active business. 

LLC & AR filling & property tax notices) while fulfilling the requirement of having a physical and mailing addressFor my LLC, I have both the Physical and Mailing addresses going to one of my rental units.

., 1. hat's a conversative methodology for incorporating Capex for a quadplex?

Physical asset investing isn't for the faint of heart.

For me, I prefer to physically visit the different neighborhoods in the area that I plan to buy in as well as look at online crime & census tools (employment, pop. growth) 

Unfortunately they are not in corporate ownership.

@Dona CardenasI personally think actually owning physical real estate is the best way to go especially using leverage.