@Jeff McCaskeyOver the long term meaning 40+ years and on a large scale such as whole country, yes those factors do tend to equalize.

I think the major pros of multi-unit are economies of scale...only 1 roof to replace, etc.

I owned, operated, and sold a manufacturing business a few years ago.

Although, a better example of vertical integration would be when a paper recycler, a paper manufacturer who uses recycled paper, and a cardboard box maker who buys rolls of paper to make cardboard, are all owned by the same company.The opposite also occurs during the not so good times.

Check local codes because they may be different.Then comes warranty issues with manufactures.. shingle manufactures are very picky after Certanteed had there recall and most want you to use minimum 3 of their products.. not sure how you plan on doing that if your going over top.

Our local market is somewhat hot now and there are some large scale projects happening, so I want to benefit and have fun along the way.

A few, however, do persevere and some do very well while others achieve the smaller scale success that they set out for.Finally, please don't underestimate the risk of buying at auction.

For the 147th time, real estate is unique, it can not be directly compared to stocks or bonds or annuities or the manufacture of widgets.

She may be agreeable to paying $500 for an air purifier specifically manufactured for animal odor, like this one:http://www.airpurifiersandcleaners.com/austin-air-pet-machine-air-cleaner-hm-410.html

Tom and I were involved with real estate investing together for nine very successful years but Tom had made his fortune in manufacturing OEM parts for the auto industry and he had the opportunity to purchase a failing OEM parts manufacturer for literally pennies on the dollar and thought that he knew exactly what to do to turn it around and make it a very profitable company.