Is that epoxy over concrete?  

These are actually concrete look.

@Scott Schaecher, my personal favorite was when they moved the washer and dryer to the middle of the basement for the first floor unit and just painted the concrete floor around them, so when we moved it back there was an unpainted rectangle in the middle of the room. 

Concrete has caught on recently but can have staining and cracking issues. 

I'm looking for anyone with information on a ballpark number for the cost to build a 4-plex...all concrete/concrete block. 

do granite if you can find one of the independents with the tools/connections.... half bulnose/flat in a pattern and really common color.ikea has really cheap formica (almost to the point of per/renter  expandable) but you need a quick and good handyman.formica also makes solid surface (not just foil)... not sure how it handles a hot pot and knife cutting....you can also do really large porcelain/granite tiles (18-20"+ inches) with very thin grout lines...concrete can go with a very good sealer, and somebody who knows what to do.but in the end, you want something you can replicate again and again with not a lot of headaches down the road...continuous success

Thanks, Jon.Doesn't that sediment turn into something like concrete?

a lot off shops charge cheap but their polishing and installation is also cheap. so in most off cases you get what you pay for.In NJ there is a lot off wholesalers you can buy a slab and do your own fabrication .a slab costs between 500 to 800.

Unpermitted driveway, unpermitted fence, unpermitted backyard concrete deck, unpermitted tiki hut, illegal plumbing, electrical in the tiki hut bar, zoning violations etc...The city has an active fine and lien, with a daily fine for years.

I am going to use some low cost value adds like higher ceilings and possibly stained concrete.