Cantilevering Over Geologic Setbacks

[Otis]

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]

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]

How is the setback measured in your code?

Many setbacks are measured from the roof drip line.

 

[Jeff]

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.

 

[Otis]

How is the setback measured in your code?

Many setbacks are measured from the roof drip line.

From the foundation