Cottonwood Heights sits at the foot of the Wasatch near the mouth of Little Cottonwood Canyon. We repair chimneys, brick and stonework and build retaining walls across the city.
The Utah Geological Survey's G.K. Gilbert Geologic View Park, at the mouth of Little Cottonwood Canyon in Cottonwood Heights, shows fault scarps, glacial moraines and boulders, and the place where alpine glaciers met ancient Lake Bonneville (UGS GeoSights).
It is a vivid example of how varied the ground is at the base of the mountains, and a good reason to look at site conditions before building a retaining wall or a heavy stone feature. A regional study cannot tell you what is under a particular yard; a site assessment can (UGS Problem Soils).
Permits
We were not able to verify Cottonwood Heights' current retaining wall thresholds for this page. Check with the city's building department before planning wall work, and build to whatever it requires.
It depends on the wall and the site. Taller walls and walls with load above them often do. Ask the city's building department for current requirements.