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Cantilevering Over Geologic Setbacks

Otis

Cyburbian
Messages
5,165
Points
28
We require setbacks from the edge of oceanfront bluffs due to geologic hazards from erosion. The setback is based on the idea of erosion not reaching the foundation for a set period. The question has come up of allowing a building to be cantilevered over some of the required setback, with the logic being that erosion still won't reach the foundation for the set period. Does anyone out there have a policy on such matters?
 

Rem

Cyburbian
Messages
1,524
Points
23
We wouldn't countenance this on scenic grounds. We also have a coastal hazard zone (defined by modelling) where new permanent development is almost impossible to have approved.
 

SGB

Cyburbian
Messages
3,388
Points
26
How is the setback measured in your code?

Many setbacks are measured from the roof drip line.
 

Jeff

Cyburbian
Messages
4,161
Points
27
You can deal with this in many ways. i've seen it alot of ways, where some ordinance will allow a "projection into required yards or setbacks" for things such as cantilevers, balconies, fireplaces, etc. and other places don't allow anything to go over the setback line.

I've had to as-built the siding on houses before to show they didn't project over a setback. It's all in what you want to allow, or disallow.
 
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