A valuation report may be required for various purposes. A request for financing, tax return, division of property, purchase or sale of the property may lead to the preparation of an official valuation report. If you want to have a valuation carried out, you can choose between a Regular or NWWI valuation. An NWWI report is a fixed validated report that can not be changed. In most cases, the lender wants to receive an NWWI report.