They found the winter tenant and are booking the summer weeks (vacation property).

Slabs can be hard to walk on, colder in the winter if the heat fails, they can sweat in hot humid weather causing tack strip to rot.

The electrical looks like it has been recently updated, and furnace as well ( Also been winterized).

Residents crank the heat up in the winter and then open a window to cool off...I am not trying to scare you off, just you need to budget for them.I don't mind multifams, but the numbers have to be right, and in this market it's hard to get the numbers right.

Turns out some renters dont want to live in cookie cutter apartments, and will pay almost as much for my units without the amenities.I also google for info on market rent trendsAfter all that,I make the best educated guess for each unit/location that I canMore detailed data would be very helpful.So far, my units have always rented for asking within a month, except units that entered the market in the winter, which rented when I dropped the price by $25/month.

If this is at ground level, and depending on what your winters are like in Texas, I would suspect this is the result of annual freeze/thaw cycles, in which case there may be no getting away from the problem without serious renovation work.

If a furnace goes out in winter, you may not be able to wait.

My current plan is getting engaged winter of this year and getting married late next year.

If the short term rental market were to take a slight dip during the winter months/possible economic slow down, is there still a potential to earn positive cash flow via long term leases? 

I'd like to apply for another loan this winter.