2009 Real Estate tax amounts BILLED, as well as tax amounts PAID, can be viewed on the City of New Berlin ASSESSOR'S page. The City of New Berlin collects taxes thru July 31st of each year, and on August 1st, unpaid taxes are turned over to Waukesha County for collection. The amounts outstanding, as well as any previous years taxes, can be accessed using the link below, or, by calling the Waukesha County Treasurer's Office at 262-548-7029. Tax Bill Search - County Data Warehouse |