They were also concerned that the 10 pounds of air required for the air test was creating more leaks in the ancient system.

I know the windows are ancient.

Ancient armies had 3 kind of warriors: The first was calvary (armed men on horseback or chariots) .

I'm starting to understand why so many rentals have ancient fixtures with 20 layers of paint!

Unfortunately, we're way under budget to afford anything there unless it's an ancient one bathroom! 

Looks like the OP is ancient, I was about to say the same thing when I realized it.

Searching through the MLS listings, my eye is constantly diverted away from searching for profitable properties to admire a Second Empire Victorian with a beautiful Mansard roof, a stately Greek Revival, or the sleek lines of a Mid Century Modern.

@Neil Da SilvaI would say 'history...' because the PTB (Powers That Be) tend to run the same plays, from the empirical playbooks moderne, and ancient, time and again.

General Question:Several of my rentals have boilers across the spectrum of quality and age.  My oldest boiler is in a 5 BR 2 BA house.  It's been producing a LOT of carbon monoxide, so much that I feel like it's a haz...

An example would be the various expenses (I have no clue what they will be ahead of time), the whole depreciation section is greek to me, I'm not sure what to expect for sales cost, vacancy rates, appreciation, capital gains tax, vacancy rate, etc.