Hey Matt,
Yes, taxes are the bane of the REI existence in SC. You mentioned them tripling, but it's a bit more complicated. Back of the napkin, you can estimate them like so:
Purchase price (or assessed value, whichever is newer) x .06 for a rental x millage which is often .45 or so, depending on the county and district.
Owner-occupied homes are:
Purchase price (or assessed value, whichever is newer) x .04 x .45. Then there is a sale tax break applied, and in some counties, owners do *not* pay for school operating costs, only construction bonds. (Lexington county is this way, but Richland is not, for example)
So, $100,000 home:
$100,000 x .06 = $6,000. x .45 = $2700. (Rental)
$100,000 x .04 = $4,000. x .45 = $1800, - sales tax credit and possibly school costs. (Owner-occupied)
You can play with these on your county's tax assessor sight, estimating real property taxes for occupied/rental.
If you want to get into the SFH space, and be competitive, I think your best bet is to invest in properties whose assessed value is sub $75k-$90k.
My strategy is to invest in 2-4plexes, as the *land* is what is taxed, not the number of doors. This allows you to divide the total tax bill across the units, to help keep rents down and be more competitive.
I have one 2br condo and the taxes on it are slightly less than I pay for my home. It's ridiculous.