From a recent report, written by David Fields:
Rising housing costs and stagnating real wages are the primary causes of worsening housing affordability in Utah. From 2009 to 2016 real income only grew at 0.31% per year while rent crept upward at a rate of 1.03% per year in 2017 constant dollars. Now, more than 183,000 low-income Utah households pay more than half their income for rent, becoming more likely to be evicted and moving closer to homelessness.
Housing has not received as much coverage in the discussions about inequality; this is well worth reading.