Custom plans are drawn to meet the specific needs of a client for a specific piece of property. Stock plans are designed to be resold multiple times. They are not designed for a specific geographic location or a specific piece of property. Stock plans offer significant cost savings compared to custom plans. Stock plans usually run from between $500 to $3,000. Custom plans may cost as little as $2.50 per square foot or as much as 20% of the cost of construction. While savings can be realized when using stock home plans, it is important to have these plans reviewed by a design professional, local to where you’ll be building, who can determine if changes or modification need to be made to the plan so that local building codes are met.