Several US cities have experienced notable housing affordability trends, often influenced by factors like demand, supply, local economies, and governmental policies. Here are some general trends:

1. Rising Home Prices: Many major cities across the US have witnessed significant increases in home prices over the past few years. This surge in prices can be attributed to various factors such as low inventory, high demand from buyers, low-interest rates, and in some cases, speculative investment.
2. Declining Affordability Index: The National Association of Realtors’ Housing Affordability Index tracks the relationship between median home prices, median family incomes, and mortgage rates. In recent years, this index has declined in numerous cities, indicating that housing affordability has worsened for many residents.
3. Urbanization and Gentrification: Urban areas, especially those with strong economies and employment opportunities, have seen heightened demand for housing, leading to gentrification and rising property values. This phenomenon has resulted in increased housing costs, making it challenging for lower and middle-income families to afford homes in these areas.
4. Impact of COVID-19: The COVID-19 pandemic has had mixed effects on housing affordability. While historically low-interest rates have made mortgages more accessible for some, economic uncertainty and job losses have strained the finances of many households, exacerbating affordability challenges.
5. Rental Market: Rental affordability is a significant concern in many cities, with rent increases outpacing wage growth in several areas. High rental costs can make it difficult for individuals and families to save for a down payment on a home, perpetuating the cycle of renting and limiting access to homeownership.
6. Government Intervention: Some cities have implemented policies aimed at addressing housing affordability issues, such as rent control measures, inclusionary zoning ordinances, and subsidies for affordable housing development. These efforts vary widely by location and can have varying degrees of effectiveness.
7. Suburban Shift: In response to urban housing affordability challenges, some individuals and families are moving to suburban and exurban areas in search of more affordable housing options. This migration pattern has led to increased demand and rising prices in some suburban markets.

It’s important to note that housing affordability trends can vary significantly from one city to another and are influenced by a complex interplay of factors. Additionally, the situation may have evolved since my last update, so consulting the latest data and expert analysis is advisable for the most accurate understanding of current housing trends.