The hottest Mortgage Finance Substack posts right now

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Erdmann Housing Tracker • 526 implied HN points • 11 Mar 26
  1. The bill contains mostly useful housing reforms but adds last-minute rules that would likely kill the market for new single-family build-to-rent homes and sharply limit large-scale investors in existing single-family homes.
  2. Large-scale investors historically have not driven up single-family home prices; after 2008 lenders cut mortgage access for many would-be buyers, investors stepped in to buy discounted homes, while recent price increases are mainly driven by owner-occupiers and a housing shortage.
  3. Banning big investors risks cutting new rental supply just when millions of units are needed, so a better fix is to restore broader mortgage access for more families, which would reduce investor activity and help lower rents over time.
Erdmann Housing Tracker • 358 implied HN points • 09 Mar 26
  1. Long-term construction capacity is constrained by hysteresis, so national production can only rise slowly. That makes local demand often hit a fixed national limit, leaving some metros effectively stuck with inelastic supply.
  2. Both claims — that supply is inelastic and that costs are too high — are true and connected. Fast-growing regions bid up inputs and materials, which raises costs elsewhere and pushes those markets into a more inelastic local supply state.
  3. Local reforms like upzoning can boost housing in a city but won’t instantly increase national capacity and can raise input prices elsewhere, so benefits may be limited or temporary. Policy must distinguish short-run vs long-run effects and target the real binding constraints (inputs, financing, regulations) to enable a lasting recovery.
CalculatedRisk Newsletter • 167 implied HN points • 30 Jan 26
  1. National house prices barely rose — up 0.7% year-over-year in December and essentially flat month-to-month, marking a cycle low and raising the risk that YoY growth could turn negative in 2026.
  2. Many markets are down from recent peaks — 23 states and D.C. are below their previous highs, and the biggest city declines are concentrated in Florida, Texas, and California with Punta Gorda and Austin among the worst performers.
  3. Market signals point to further cooling — Freddie Mac and NAR measures seem to lead Case-Shiller, and rising inventory plus the lowest sales since 1995 have slowed national price growth and may push it lower.
QTR’s Fringe Finance • 35 implied HN points • 13 Feb 26
  1. Housing is primarily a consumption good you live in, not a reliable financial investment, because ongoing costs like maintenance, taxes, insurance, and transaction fees erode any supposed appreciation gains.
  2. Policy proposals like large MBS purchases, allowing 401(k) withdrawals for down payments, mortgage portability, or ultra-long loans are economically misguided and tend to require more debt or money printing, distorting capital markets and favoring existing homeowners.
  3. Tapping home equity or inflating home prices doesn’t create net wealth—selling to realize gains is offset by higher purchase prices, fees, and loan liabilities—so policies that prop up housing prices end up shifting costs onto younger buyers and non-homeowners.
Erdmann Housing Tracker • 63 implied HN points • 23 Dec 24
  1. Builders like Lennar are using cash discounts to sell homes, which can create a misleading price for buyers. Buyers may end up paying more due to high 'menu prices' even if they think they are getting a good deal.
  2. There are risks for mortgaged buyers when home prices fall. They might be stuck with a mortgage amount that is higher than the real value of their home, leading to losses or foreclosure situations.
  3. Unlike in past housing crises, current market conditions have regulators and the Federal Reserve focused on avoiding a housing crash. The situation today is more stable, reducing the chances of a major crisis like in 2008.
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