Condominiums can usually be valued quickly using the sales comparison approach due to the good availability of comparable data, which reduces the processing effort and thus the costs.
Single-family homes often require a combination of the cost approach and sales comparison approach, as well as a more detailed property inspection, which is reflected in the price.
Commercial properties and larger multi-family houses additionally require a detailed income approach calculation with lease agreements, operating costs, and individual risk factors, which significantly increases the effort involved and thus the fee.
For commercial properties, the number of different tenancies and types of use within the same property additionally influences the effort involved, as each unit must be examined separately.
The nature of the market also plays a role: in market segments with few comparable properties, for example with very specialized commercial properties, the research effort tends to increase, and with it the fee.