Does Fountain Hills, AZ need an earthquake retrofit?

Under the seismic model IBC and ASCE 7 use for new construction, Fountain Hills is Category B. Low seismic hazard. Code requires basic seismic detailing (bracing, connections) but no special structural system restrictions. That puts Fountain Hills in the 57th percentile nationally for seismic hazard - higher than 57% of the 4,875 US cities USGS was checked against here.

How Fountain Hills compares

USGS's underlying values for Fountain Hills: 0.102g peak ground acceleration, 0.231g at short period, 0.075g at 1 second. Within Arizona alone, Fountain Hills ranks 33 of 57 cities by seismic hazard - the 43th percentile in-state. Fountain Hills has a population of about 23,696.

Bracing and bolting: the actual cost

A full earthquake retrofit typically runs $5,000-$10,000 nationally (around $7,000 typical), driven mainly by house size and foundation type, not by Arizona specifically. California's Earthquake Brace + Bolt grant, which covers a large share of this cost, is a California-only program and does not apply in Arizona.

Earthquake insurance for a Fountain Hills home

A Fountain Hills homeowner cannot buy a standalone earthquake policy in most cases - it is added to an existing homeowners policy as an endorsement, so the place to start is a regular home-insurance quote.

Where Fountain Hills's figures come from

Fountain Hills's Category B and every number above trace to USGS's own ASCE 7-16 Design Maps service - see the methodology guide. See the category explainer for what Category B does and doesn't tell you about Fountain Hills.