Mike, in a previous post, you lumped commercial properties with res. I never said you refered to a retail center specifically, I was only pointing out the vast difference in OE for different commercial properties for everyon'e benefit and to use different methods for res & comm investments.
I am so happy you finally agree with something. I must be a complete fool (or silly as you put it) according to you, as I must not know anything about investing, right? - Wrong!
Again, I need not prove myself to you and if some of the other members want to worship every word you say, that is their choice. Operating a landlord business of low income rentals is not the only way to be a landlord and many invest for long term capital growth in addition to cash flow. That, in my opionion, is a better choice than yours, as you will have to continue working each year to sustain your cash flow income, while others can cash out large sums of equity in the future, that of which can be eaten. I understand your 50% rule perfectly, I did not need you or Beachbum to explain it, I simply use different methods by choice, such as taking out vacancy rates first, then deducting OE.
As for what I do, yes I am a landlord, but operate differently than you. Yes, I know all about cash flow, cash is king, etc, but I only have two rentals in low income areas that have values under 100k. I also invest in the commercial area with apartments, retail centers, land development, and storage facilities. The 155k duplex on my website you keep refering to is much different than what you do. Yes it is currently priced at 93% of appraised value. Please show me a NEW construction property over $150,000 that you can buy for 70% on the dollar! Sure there are old units in foreclosure, auctions, desperate sellers, etc, but those units are pre-owned, do not have builder warranties, most likely are in poor neighborhoods, and do not come to the investor turnkey. These units will have greater appreciation in future years (this is not speculating, it is a fact as RE always repeats itself and always has its ups and downs, but for the long trem, 5-10 years, my new duplex will outperform your old 40k sfr) I have set up some of these properties for investors who are not investing full-time or maybe are just getting started and do not want the stress of repairs/maintenance/management. We have teams set in place to do that for them. So maybe they do not cash flow to your standards and maybe they do. The point is, it is an option for investors.
I can not possible buy all these units myself, and I have already arranged the deals and the teams in place, so why not pass them along to others who can benefit from my work and due diligence. If you do not like the deal, fine, do not buy one. I never asked you for your opinion on my available deals. I do not like yours either. I like lower maintenance/hands free operations, you do not. Fine.
Again the original question was where does the 50% rule come from. I gave other methods to arrive at more accurate figures, in my opinion, and other types of investments that require different calculations. So lets leave it at that and stop making this so personal. I am not slamming your product you sell on your site or your blog, or anything else, so refrain from doing so to mine. We simply have different investment styles and different methods for determining a specific deal. Let the others decide which is best for them. Otherwise, I hope a moderator steps in here to stop you from your personal attacks.