I was intrigued enough to do a little research to see what his deal (secret) was. He

What I did was look around for wash/fold/dry places instead.

Between 2005-2008 I had the opportunity to support & update several old (DOS s/ware) Medical billing systems for several physicians who were friends of my wife & who also used the same system.One owned several car wash facilities along with 3 small office buildings & his income stream was rather remarkable.

I also clean up the yard and power wash the exterior of the home when I do a tenant change over.

Interest is a wash and it is an arms length transaction.

We're happy with our condo investments.In FL, condo living for tenants is desirable, because they can get amenities that SFRs in that price range don't have - secured/gated entry, pools, tennis courts, fitness centers, waterfront views, jogging trails, BBQ stations, car wash facilities, party rooms, boat facilities, etc.

There would, of course, be tax benefits since we could write off the improvements done by the LLC but ultimately it woud come out as a wash in the end since we lose our home sale beneft and would have to recapture any depreciation later.

In most situations, running an electrical circuit is easily accomplished with minimal damage and rework.120v in-line heaters are meant to be used as boosters for water that has already been pre-heated but where additional rise in temperature is required - the most common examples would be in washing machines which have steam clean or sanitary cycles and in dishwashers.  

They have to wash all clothes with hot water and high heat and keep them in garbage bags following washing until unit is fully treated 3 times over a couple of weeks.

They'll typically wash the PITI with a percentage of rental income and then put the shortage to your monthly debt total.