Amid a housing crunch and a rental market upended by COVID-19, lengthy queues for affordable housing continue in Boston, with one organization that owns 500 residential units in Allston and Brighton seeing its waitlist top an eye-popping 17,000.

More than half of the units owned by the Allston-Brighton Community Development Corporation have rental subsidies and on average the income for its households would be considered “the low-end of low income,” said John Woods, the organization’s executive director.

Woods recently confirmed the wait-list queue, and said that natural turnover that occurs with market-rate housing doesn’t happen with the type of housing his organization offers, which is the major driving factor for the length of the list.