Which zoning type allows for firewalls to be constructed up to 3 storeys high?

The zoning type that allows for firewalls to be constructed up to three storeys high is R-2. This zoning classification typically accommodates multi-family dwellings, which often require specific safety measures, including firewalls, to ensure adequate protection between units or properties.

In R-2 zones, the regulations account for the increased density and building height that accompany multi-family housing. Firewalls are essential in these areas to meet fire safety codes, particularly as buildings increase in height and the potential for fire spread rises.

Other zoning types, like R-1, generally pertain to single-family dwellings and have stricter limitations on building height and fire protection measures, while R-3 and R-4 may allow for different arrangements of structures or increased density but may not provide the same standards for firewall heights as R-2. Thus, R-2 is specifically designed to balance the need for density with safety regulations.