I have seen many investors make the move to buy one or more proeprties and those properties even without renovations double/triple in value. 

Maybe you paint it to justify why it’s worth triple.

But this means that the new year is going to open to people with 'meh' credit and 5% down (but solid income, triple verified, including during the week of closing escrow) being able to buy >$1,000,000 homes.

As an agent: A raccoon came out from under a bench in a foreclosure and walked through the room and out the door to the other room in a huff like he owned the place & we were interruptingAs a homeowner: I bought a house decorated with wicker, clown paintings and mirrors (tripled in value since 2012)As an investor: I had a tenant who wasn't paying her rent.

For example the property has reserved parkings and storage spaces, I could see that in Resman these items have not been added to the "Rentable Item" window and it's difficult to track their vacancyThe general Ledger seems to be very messy too, there are more than 1000 sub-accounts, some of them look double or triple, and almost none of them are used.Do we have to keep all the sub-accounts since the construction of the property as an archive, or can order be made there?

If you want hands off real estate then you should look into investing in triple net lease properties or as a passive investor in someone else's syndication.

(cast iron and/or clay pipes will cost you a lot to replace) I would triple check your capex and future cash flow before proceeding. 

If I wanted to give a longer term lease and make it triple net how does that work?

Population triples during the Winter and it's very quiet during summer months.  

Double or triple your costs and you'll see why no one is buying it...