Age of Housing Units – Pittsburgh Counties by Pittsburgh Today Staff Categories: Arts Education Environment Housing Sustainability Demographics Economy Government Health Public Safety Transportation Subcategories: Indicators: New Building Permits - Benchmark Regions Housing Vacancy Rates Homeownership Rates Housing Appreciation Rates Housing Segregation Index Age of Housing Units - Pittsburgh Counties Age of Housing Units New Building Permits - Pittsburgh Counties Total Foreclosures Housing Vacancy Rates - Pittsburgh Counties The age of the housing in a region is one measure of the rate at which its population has been growing in relation to other areas.