Week $9$: Agile Project Management model

Imagine that you are a home builder with $20+$ year track record of very successful and profitable construction projects. You have won multiple "Builder of the Year" awards for excellence in residential home construction. Your newest customer, a professional Project Manager for a software development consulting firm, has just signed a $$550,000$ sales contract with you to build a new two$-$story, $4$bedroom, $2\mathrm{.}5-$bath home in a prestigious new suburban subdivision that you are developing. However, this customer insists that you follow the Agile Project Management model for the construction of their new home. How would you respond to your customer's demand?