Amherst's SFR case rests on sellers who won't move

Sean Dobson laid out Amherst's single-family rental case in a conversation with Walker & Dunlop's Willy Walker, recorded Sept. 17 at the 2026 Zelman Housing Summit in Boston and broadcast Sept. 23 as a Walker Webcast. The catalyst he kept circling was the one that produced the last foreclosure wave, and he does not expect to see it again. The problem in 2006 and 2007, per Connect CRE's account of the discussion, wasn't simply that prices had run past fair value: millions of homes carried adjustable-rate and payment-option mortgages, and when those loans reset they produced defaults and excess inventory. Dobson sees no equivalent trigger now, partly because fewer people are buying at all, and an earner making $80,000 a year can't qualify for a mortgage large enough to buy a large home.

His critique of the Fed is the sharper part. Dobson called the central bank late, said it kept rates too low on both sides of the financial crisis, and described the pandemic response as excessive on the monetary and fiscal sides alike. "I think that raising rates today is fighting inflation that was caused a couple of years ago," he said, with housing taking the brunt of both errors—the financial crisis carried only a fiscal problem, while this cycle has both. America's cost of capital has risen 100 to 150 basis points, which he called a lot, and that repricing is the mechanism deciding which owners get to wait out a refinancing.

Dobson locates the single-family rental case in supply, specifically a shortage of tradable housing. Millions of owners hold low-rate mortgages and won't sell, so the float of homes available to transact is far smaller than the housing stock. He also cites the 85% of families who aren't homebuyers though they'd like to be homeowners—households that aren't married, or carry two sets of children, or are simply roommates, or a single mother with kids. Those are renters by arithmetic rather than preference.

Amherst remains committed to single-family rentals, but the pitch has changed shape in the telling. It is now about renting to households the for-sale market cannot finance and cannot supply, asking nothing of anyone's misfortune, only that owners stay put, which makes it durable and in the same stroke conditional.

The condition is behavioral, not physical: the float stays small only while owners refuse to trade, and that refusal is priced off the spread between an existing mortgage and a new one. If the policy rate eases enough to compress that spread, more listings likely follow, loosening the entry-level supply that feeds both the for-sale market and rental demand. The affordability gap locking households into rentals is the same force this publication has traced in apartments, and it cuts both ways for landlords: it fills units today and invites the supply that competes with them later.

The number to watch is the float. A durable pickup in listings would be the first honest dent in the rental bid, and it would arrive from rate relief rather than distress—the demand the sector's own underwriting has been counting on to stay locked out.