The local comparative rent (§ 558 BGB) is the benchmark for permissible residential rents in Germany. It determines how much rent may be increased, what share of modernization costs may be passed on, and what rental income a property can sustainably achieve.
The rental value appraisal report determines the market-standard net cold rent for your property based on an expert comparison — methodically correct, comprehensibly documented, and usable in court.
The gross income determined is at the same time the central input in the Income approach.
Where the value of the property as a whole is to be determined, the route is via the market value report.
