Buying the median home in Mount Pleasant means financing $678,000. Against the area's $95,000 median household income, that works out to a 7.1x price-to-income ratio.
Property taxes in Mount Pleasant run 0.55% of assessed value, below the 1.1% national average. On the median home, that's $3,729 a year, or $311 added to the monthly payment.
South Carolina levies a state income tax on top of the $4,218/month this mortgage runs. Model your real after-tax take-home before deciding how much payment you can carry.
Mount Pleasant's cost of living index is 155, above the 100 national baseline. That's on top of the housing numbers above, not instead of them.
Mount Pleasant's median home price runs 166% higher than nearby Columbia: $255,000 there versus $678,000 here.