No. The U.S Constitution allows state and local governments to limit private property activities provided the limitations serve a legitimate public benefit and they do not deprive the landowner of all reasonable use of the property. The SMP regulations protect shorelines of the state, a public resource. In most cases, buffers do not deprive landowners of all reasonable use of their property and, generally speaking, all property tends to benefit from reasonable setbacks and buffers. In those limited instances where a buffer or setback precludes or significantly interferes with reasonable use, the property owner may apply for a variance.