From December 2022 to February 2023, ndp analytics conducted interviews with housing providers and developers from three different markets impacted by rent control policies and proposals: St. Paul, Minn; Santa Ana/Santa Barbara; Calif; and Portland/Eugene, Ore. The interviewees ranged from large firms operating thousands of units and having properties across the country to small mom-and-pop businesses with a handful of units. The findings show that rent control polcies discourage investment and decrease the housing supply.