Daniel and Katherine Balk asked Jirak Construction, LLC, to remodel their farmhouse in Lawler, Iowa. Jirak provided the Balks with an initial estimate of $45,975 for the cost. Over the course of the work, the Balks made significant changes to the plan. Jirak agreed to the changes and regularly advised the Balks about the increasing costs. In mid-project, Jirak provided an itemized breakdown at their request. The Balks paid Jirak $67,000, but refused to pay more. Jirak claimed that they still owed $55,000 in labor and materials. Jirak filed a suit in an Iowa state court against the Balks to collect. Which of the liens discussed in this chapter would be most effective to Jirak in its attempt to collect? How does that type of lien work? Is the court likely to enforce it in this case? Explain.