For a current valuation date, we can directly draw on current standard land values, comparable prices, and the actual condition of the property as found.
For past valuation dates, for example in cases of inheritance or divorce proceedings, historical data must be researched and the condition at that time reconstructed using documents and witness statements.
This additional research effort is generally reflected in a higher fee compared to a valuation as of the current date.
For valuation dates far in the past, such as several decades ago, reconstruction becomes increasingly labor-intensive, as historical standard land values and comparable data are sometimes only available to a limited extent.
In such cases, eyewitness accounts or old photographs can also be used as an additional source of information to comprehensibly document the condition at that time.