We have an unfinished basement and would to get an idea of price to drywall tape, sand, and paint? Per sq ft?
It would be somewhere around $3 to $5/foot, cost varies according your area and accessibility. If you have larger area without too many corners or bulkheads cost/square feet will be lower and if you have lot of corners/bulkheads, cost goes up.
After looking at and reviewing the area, only then u can get exact idea
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