The proclamation, signed by City Manager Stephen Rhodes on Wednesday, would allow Pacifica to qualify for financial assistance through the Federal Small Business Administration.
It states that 326 housing units are endangered by the erosion, including 14 single-family homes.
The structure that has elicited the most concern is an apartment building at 330 Esplanade Ave. Residents of the building were forced to evacuate shortly before Christmas, and a contractor hired by the owners has been trying to stabilize the cliff by placing boulders at its base.
The proclamation would need to be approved by the state for the city to qualify for the federal assistance.