From time to time we receive survey plans with “assumed” elevations rather than the actual elevations. Assumed elevation data is problematic.
First, assumed data does not allow the reviewing board to compare one property to another (in the past decade we have had projects in almost every neighborhood).
Second, building height is now based upon average existing natural grade. Knowing the true elevation, again, provides the reviewing board the best understanding of how tall a structure will be.
Third, finally and most importantly, about one third of the residential properties lie within the pending flood zones. Assumed elevations provide no basis for understanding whether the proposed improvements on a property comply with flood elevation requirements.
So, just a heads up, the Planning and Board of Appeals are looking for real elevation data, not assumed.