Final answer:
The estimated cost to build the Publinsky's house using contractors for all tasks is calculated by multiplying the house size of 2,500 square feet by the average cost of $124 per square foot, resulting in an estimated cost of $310,000.
Step-by-step explanation:
To calculate the estimated cost for the Publinsky's house if they use contractors to complete all of the tasks, you would multiply the size of the house by the average cost per square foot. The given size of the house is 2,500 square feet, and the average price for a house and lot similar to this one is $124 per square foot. Thus, you would perform the following calculation:
2500 square feet × $124 per square foot = $310,000
This is a simplified estimation and doesn't account for specific contractor pricing, potential cost savings from the work done by Mr. Publinsky as a retired plumber, or any additional costs or savings from Mrs. Publinsky handling the interior decorating. To ensure accuracy, all relevant factors should be considered in the actual planning process.