The average cost for Hardiplank siding is $600 to $666, or $5.28 per square foot, as of 2015. The average cost for Hardiplank siding with the most basic materials and labor ranges from $432 to $594, or $4.28 per square foot. For the absolute best materials and labor, prices range from about $696 to $818, or $6.30 per square foot.
Customers should always get estimates before hiring a company to install Hardiplank siding, because most companies charge different rates for their products. Prices are usually lower in the late fall and winter because it is the down season for most contractors. Customers should also visit retailers and wholesalers so they are able to negotiate prices on materials.