Finding an apartment — let alone an affordable one — has grown increasingly challenging in Colorado and the rest of the nation. With vacancies down and rents up, it’s a landlord’s market.

Ron Throupe, a professor of real estate at the University of Denver’s Burns School of Real Estate and Construction Management, characterized the market for would-be renters as the worst in at least a decade and predicted that conditions won’t improve “probably for another year or more,” when new units become available.