This has to be done with caution, as discouraging construction outside the city limits may have a negative impact on housing affordability in central areas, and land use should guarantee affordable new housing as the population grows. Abandoned and underused parts of the cities deserve to be made the priority for development, and any attempts to develop beyond a city’s boundaries may need to be restricted. The former or partly used industrial sites occupying considerable areas of the cities will have to be in the redevelopment agenda. In the case of single-industry towns, it can be especially important to reuse post-industrial zones and brownfields.