I'm guessing you'll be building in Shelley Woods or Chastain?
Here's the link to the Lancaster County website.
Lancaster County
http://www.lancastercountysc.net/documents/brochure1.pdf (broken link)
The above PDF may be out of date due to Act 388 that the SC legislature passed last year (see link below). SC removed a large portion of homeowner responsibility for funding schools.
http://www.city-data.com/forum/york-...act-388-a.html
The taxes are easy enough to figure out and yes the ratio of 4% is the same. Lancaster County figures taxes like so:
taxable value of land * .04 = assessed value
building value * .04 = assessed value
total assessed value x .246 mills = tax due
That amount use to be what I paid until Act 388. The county should be able to tell you more about how to estimate that amount but my taxes dropped from $2100 to just under $900....almost 60%.
As for water, Lancaster has a 24 acre reservoir lake. I don't have any experience with the wells. There may be other water sources but our water is good enough here that Union Co, NC buys it regularly. The big thing right now is the trace amounts of a chemical they found. Lancaster charges about $30 for the first 3,000 of water and $20 or so for the first 3,000 of sewer. Even if one were to use less than 3,000 the bill amount only decreases slightly for the sewer charge.
Of course since you'll be in unincorporated Indian Land, there's no county provided trash collection.
Also, my attorney recently told me that people are being asked to declare their address as Indian Land, SC 29707 or Fort Mill, SC 29707 at closing.