What percentage of each side property line may a firewall be constructed on R-4 zoned properties?

In the context of building codes and regulations, particularly for R-4 zoned properties, the correct percentage for constructing a firewall on each side property line is 85%. This percentage is significant because it reflects the allowances given to ensure safety while maximizing the usable space on a property. Firewalls are essential for providing a fire-resistive barrier between buildings, thus reducing the risk of fire spread and protecting adjacent structures.

R-4 zoning typically refers to areas that allow for higher density residential developments such as multi-family housing. Regulations allowing a high percentage of the firewall on the side property lines are designed to promote fire safety, especially in densely populated areas where buildings are closer together.

Understanding this regulation is crucial for developers, architects, and builders, as it influences design decisions and compliance with local fire codes. The need for adequate fire separation without losing too much property space drives this specific percentage. Knowing the accurate percentage helps in designing structures that conform to local laws while ensuring safety for inhabitants.