The code rewards the base building area for being further from other things, and for having more of your perimeter open. The ‘Width of Open Space’ as I am reading it is more like the distance from building bulk to the next bulk. Most setbacks fall into 20′ of open space. Though I am sure the code is implying please give us fire lanes. This is more easily understood with a 3D plot:
Frontage Bonus Visualization
Since this frontage bonus can be so massive (up to 166%) it is worthy to understand its mechanics. Here is each datapoint with sliders:
Frontage Bonus Calculator
Open Perimeter: 50%
Open Space Width: 30 ft
Parameter | Value |
---|---|
Perimeter | 400 ft |
Frontage | 200 ft (calculated from % open perimeter) |
Width of Open Space | 30 ft |
Frontage Bonus | 0% increase in allowable area |
Bonus Summary
No Bonus (Low Impact)
This can half the number of buildings required. And might allow higher construction to be downgraded into lower types if it complies.