Even college-educated millennials with no debt need at least a decade to save for the down payment on a Denver home, says a new report from Apartment List.

The firm’s data science director tells the Denver Post that’s because millennials in the city make (and save) less than in other places:

“The takeaway for Denver is that it is quite unaffordable for all three groups of renters,” said Andrew Woo, director of data science at the San Francisco-based provider of apartment listings and market research.

Mix in the city’s high home prices, and you end up with a city unusually difficult for would-be millennial homebuyers. As the Denver Business Journal points out:

“Nationwide, the report found that most college-educated millennials can afford a home in their metro, with it taking fewer than 6 years to save for the downpayment. Denver was one of the outliers: It would take the average college-educated millennial (with or without debt) more than 13 years to save for a home.”