Questão jurídica principal
When does a property owner contribution become due and when may default interest start to run?
Decisão extraída
The contribution becomes due only when the definitive contribution decision has been served and the amount has been invoiced; default interest can run only after the payment period has expired following that invoicing.
Fundamentação extraída
The court held that the wording of the statute and implementing regulation, their legislative history, and the logic of the contribution system all require both service of the definitive decision and simultaneous billing. Since the city expressly deferred invoicing until after the appeal proceedings, there was no default in 1989; default began only after the invoice of July 1992 and the ensuing 30-day payment period.