Originally Posted by JoeyA
I estimate that a project like what I envision would cost an easy $50,000.00
Yeah, looks like Joey had his mind made up well in advance of this thread.
Joey, you could build an even smaller building. 16 x 20 would be lots more space than I have. Easily enough room for a 9' table, small bar, fridge, sofa and a couple seats.
As far as climate control goes, you will be able to keep the conditions near ideal a heck of a lot easier than the local pool room can. Insulation is not all that expensive. 2" High R exterior sheathing is only like $25/sheet and will provide R-13 insulation - way more than you need for AC alone. Keep windows to a minimum (face them north to avoid solar heat buildup), install a good Themopane sliding door (give you more usable space inside a small building) and you should be able to get the basic shell built on a slab for under $15K.
I'm not great with carpentry work, but I did almost all the interior work on my room myself. Tools required are box cutter, measuring tape, drywall square, small drywall saw, a few spackling knives and some sandpaper. Or hire it out to a professional drywall guy.
A good high-efficiency heat pump/AC unit for a building that size wouldn't break the bank, and you could keep it running all the time. For about a grand you could add a very sophisticated dehumidification system that will keep the room at about 45% relative humidity for a few bucks a year. I use both in my basement, and my cloth is always fast and tight, regardless of the humidity outside. Cost of running all this full time shouldn't be more than a couple dollars a day.
At any rate, you won't find too many here who have their own table who regret getting it. Kinda like looking for guys who have a nice gal waiting for them wishing they could go back to hitting the bars. Difference with pool is, you can play both at home and away from home without getting into a world of trouble.