They (1) forbade any use deemed to be commercial in nature, including down to the level of "renting even one room", they then (2) forbade any residential use of any building other than the main dwelling unit, and so on.

Way easier than dealing with residential tenants.

Otherwise done by email.2) I arrange a home inspection annually through a residential home inspection firm to look for maintenance issues.3) I use forms from local landlord association.* It's a trade off, pay someone else because my time is more valuable, or do it myself with efficiency.

If they had to foreclose, would they have a more difficult time selling because it's not a 1-4 unit residential property? 

Since then, completed a variety of different real estate deals including fix and flips, hard money lending and an STR in ski country; all residential.

Two years ago I purchased vacant land in Grand Junction, CO that is zoned so that I can build commercial, residential, multi-family or any combination thereof.

I have a goal set to purchase my first investment property (SFH or residential multi) by April.

Here in PA, there is a new pipeline being built right through residential neighborhoods outside Philadelphia.

Someone specializing in SFH / residential that would ideally have both rental and flip experience - or at least great sales/listing experience.

It's possible to also tabulate the data by the type of property (residential or commercial).