Prosper Portland bought a 30-unit apartment building in the Concordia neighborhood of Northeast Portland, the agency's first acquisition under a strategy aimed at keeping rents affordable for middle-income households.

The Prosper Portland Board of Commissioners approved the purchase of 30th & K, a multifamily property three blocks north of the Alberta Arts District, on Thursday, Sept. 10. The building has one studio, five one-bedroom and 24 two-bedroom units. The agency's announcement did not include the vote tally.

The deal is the first property bought under Prosper Portland's Middle-Income Housing Preservation Strategy, adopted in December 2025. That strategy targets households earning 80% to 120% of the Median Family Income (MFI), a bracket the agency says has few public subsidies available in Portland.

"We know that Portland has a critical shortage of two- and three-bedroom apartments, so I am pleased that this acquisition helps preserve affordability in 'the missing middle,'" Cornell Wesley, executive director of Prosper Portland, said in a statement announcing the purchase.

Wesley called the acquisition a replicable model. The agency plans to use it as a template for future purchases under the strategy.

Under the strategy, Prosper Portland plans to buy newer, institutionally maintained buildings and run them under a limited-profit, cost-recovery model. The goal is a portfolio of middle-income housing that sustains itself financially without ongoing public subsidy, according to the agency.

Private developers have struggled to finance and build new medium-density apartments for the 80%–120% MFI bracket because of high development costs, Prosper Portland said. Instead of constructing new buildings, the strategy calls for acquiring existing ones to fill that gap.

The approach complements other programs, including Oregon's Moderate-Income Revolving Loan fund. The state allocated $75 million to that fund in 2024, allowing Oregon Housing and Community Services to make no-interest loans to cities and counties for housing affordable to households at 120% of area median income and below.

Portland's 2045 Housing Needs Analysis, adopted in December 2023, determined the city should plan for roughly 120,000 more housing units by 2045. That analysis found rising costs have strained budgets not just for low-income households but also for moderate- and middle-income families.

On Friday, Sept. 11, Prosper Portland posted a separate Request for Interest seeking building conversion projects targeting the same 80%–120% income range, with $495,000 available through the Oregon Department of Environmental Quality's (DEQ) Low-Embodied Carbon Housing Program. Submissions are due by Monday, Sept. 21.

The purchase price for 30th & K was not disclosed.