Depreciation of Residential Buildings and Maintenance Strategies in Urban Multicultural Contexts

Policies of environmental redevelopment and urban regeneration, actions for social and multicultural integration, the growing attention to “green” or high energy performance buildings, the need to rethink buildings in “smart” mode due to pandemic emergencies on a global level, all these aspects require to assess the impact of choices about maintenance strategies on real estate values through synthetic but efficient tools, capable of quickly adapting to the most appropriate choices to be made. Buildings tend to decrease their market value over time due to main three factors: physical wear and tear, income decay, functional and economic obsolescence. Considering an “intensive” residential building, typical for urban peripheral and multicultural contexts, specific mathematical functions capable to express the total depreciation have been determined (in case of scheduled maintenance or not), taking as a reference only the years of its service life. Analogous mathematical depreciation functions have also been defined for each functional element constituting the sampled building. A further aspect dealt is to highlight how and to what measure the maintenance affects the depreciation process that involves urban and intensive residential buildings.