Portable Mortgages

The Lock-In Effect: Why Millions of Homeowners Won't Move

If you've been watching the housing market, you've seen the problem firsthand: millions of homeowners locked in at 2.5–3.5% rates during 2020–2021 are refusing to sell because today's rates are significantly higher. Why trade a 2.75% mortgage for a 7% one? This "golden handcuffs" effect has frozen housing inventory across the country, keeping prices elevated and shutting out buyers who desperately need more options.

How Portable Mortgages Would Work

The concept is straightforward: instead of your mortgage being tied to a specific property, you could transfer your existing loan — rate and all — to a new home. Sell your current house, buy a new one, and keep that 2.75% rate. Several other countries, including Canada, the UK, and Australia, already offer some form of mortgage portability.

In the U.S., this would require significant restructuring. Currently, when you sell a home, your mortgage is paid off and a new one is originated. Portability would fundamentally change that — and Emmett walks through exactly what that looks like in practice.

The Upside: More Inventory, More Movement

If portability became available, the impact on the housing market could be enormous. Homeowners who've been sitting tight would finally have an incentive to list, potentially unlocking millions of homes that are currently off the market. This would be especially impactful in high-demand states like California, Colorado, and Washington where inventory shortages are most severe.

The Catch: Who Doesn't Benefit?

As Emmett notes in the video, portable mortgages primarily help existing homeowners — people who already have a low rate they want to keep. First-time buyers don't have an existing rate to port. And there's a real risk that increased demand from newly mobile homeowners could actually drive prices higher in popular areas, making affordability worse for new entrants.

The MBS Problem: Why It's So Hard to Implement

The biggest hurdle is structural. U.S. mortgages are bundled into mortgage-backed securities (MBS) and sold to investors who expect predictable cash flows. If borrowers can port their below-market rates to new properties indefinitely, those securities become much less predictable — and potentially less valuable. Restructuring how MBS work would require coordination between the Federal Reserve, Fannie Mae, Freddie Mac, and thousands of investors.

What This Means for You Right Now

While portable mortgages aren't available yet, there are existing tools that accomplish something similar. Assumable mortgages let buyers take over a seller's existing FHA or VA loan — rate included. And if rates drop, refinancing lets you capture that benefit on your current property.