I like making quarterly "extra" payments.

Well here are few that I can think of:- You are an Accountant - who views the reports once a year to do taxes (That is it)- You are a Bookkeeper - you want to do the data entry because it does not make you money- You are a DIY QuickBooks user - who will surf the internet and YouTube for answers and not have the full process, procedure, and solution- You are a CFO - review your financials every day or week, depending on your business goalsNow let's get into the nitty-gritty:- You as a business owner should look at your reports by each property and unit- You should compare your Profit and Loss by:----- Month----- Quarter----- Year----- Previous Year Comparison----- By % of your Income ----- and the list goes onNow about your Equity - view your Balance Sheet and see the difference from previous year how much money you paid and received by improvements and loan, the personal money you invested and more...If you are looking at keeping the books for tax purposes and IRS, as well as use paper and pencil.

Thanks to all for the advice, I think I go with either quarterly or biannual increases.

I came across their information today and they claim that members pay $ to invest in a portfolio of properties that generate consistent quarterly cash flow (9%-11%). 

So compare the $50 for three months, to $600/quarter in the city.

However, HUD came out with a memo in the 90's that stated that a living room could be used as sleeping quarters, therefore that would be 2 per bedroom plus one. 

Marcus and Millichap puts out excellent quarterly reports for multifamily (as well as other asset classes) in many of the big Metro areas, you have to register and provide an email:http://www.marcusmillichap.com/researchTheir reports are really excellent because they break it down by sub market.

You can also gain this experience by investing with an experienced syndicate manager in larger projects (100+ units) and closely studying their monthly/quarterly reports.

I looked at the tenant's bill for the same quarter the previous year as a benchmark and immediately and voluntarily paid half the big water bill, and again paid about a third of the bill for the quarter during which the repair was made.

Popular, increasingly trendy area.  1-4 miles from the French Quarter/Downtown areas.