How Many Assumable Mortgages Exist in the US?
Roughly 12 million. That's the estimated number of active FHA and VA mortgages in the United States that are technically assumable. Not all of them are on the market (the homeowners have to decide to sell), but the underlying loan is assumable whenever the property trades.
The Breakdown
VA loans: Approximately 4 million active VA mortgages. The VA loan program has been growing, with record origination volumes in 2020-2021. Many of these carry rates between 2% and 3.5%.
FHA loans: Approximately 7.5 million active FHA mortgages. FHA has consistently been one of the largest government loan programs, especially popular with first-time buyers.
USDA loans: Approximately 500,000 active USDA mortgages. Smaller program, concentrated in rural and suburban areas.
Total: Roughly 12 million assumable mortgages nationwide.
How Many Are Actually Available?
Of those 12 million, only a fraction are on the market at any given time. The average homeowner stays in their home 8-10 years. In any given year, roughly 5-7% of homeowners sell.
That means approximately 600,000 to 840,000 assumable properties could potentially hit the market each year. Not all of them will be marketed as assumable, and not all will have rates low enough to justify the assumption process. But the pool is massive.
The Low-Rate Subset
The most valuable assumable mortgages are those originated during the low-rate era (2019-2022). During this period:
- VA loan originations surged, with rates bottoming near 2.0%
- FHA loan volume was strong, with rates in the 2.5-3.5% range
- An estimated 6-8 million of the current 12 million were originated or refinanced during this window
These are the loans with rates dramatically below current market levels. They're the ones that save buyers $500-$1,200 per month.
Colorado's Share
Colorado represents roughly 2% of the national housing market. That translates to approximately 240,000 assumable mortgages in the state. At any given time, roughly 1,000-1,200 are actively listed for sale. I track 1,124 of them right now.
The Awareness Gap
Here's the striking thing: 12 million assumable mortgages exist, but the vast majority of buyers and agents don't know about them. Assumption transaction volume, while growing fast, is still a tiny fraction of total home sales.
This gap between supply and awareness is the opportunity. Buyers who understand assumptions have access to a financing advantage that 95%+ of the market is ignoring.
That gap is closing. But right now, informed buyers have less competition than they'll face a year or two from now.
See Colorado's available assumable properties.
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Frequently Asked Questions
What is an assumable mortgage?
An assumable mortgage is an existing home loan that a buyer takes over from the seller at the original interest rate, balance, and terms. FHA, VA, and USDA loans are assumable. Conventional loans generally are not.
How much can I save with an assumable mortgage?
On a $400,000 loan at 3% vs. 7%, you save $1,081 per month. That's $12,972 per year, and over $300,000 over the life of the loan. Real savings, not theoretical ones.
Which loans are assumable?
FHA loans, VA loans, and USDA loans are all assumable. Conventional loans (Fannie Mae, Freddie Mac) generally have due-on-sale clauses that prevent assumption. The most valuable assumable inventory comes from 2019-2022 originations.
How do I find homes with assumable mortgages?
Most MLS listings don't flag assumable loans. You need to work with a specialist or use a service that tracks FHA and VA loan inventory. Browse assumable homes in Colorado to see what's available now.
How long does the assumption process take?
Most assumptions close in 45-90 days. The main variable is the loan servicer's processing speed. Having all your documents ready upfront and working with an experienced assumption specialist helps.
What is the equity gap?
The equity gap is the difference between the home's sale price and the existing loan balance. You cover this with cash, a second mortgage, or both. Even with a second mortgage, the blended rate often beats a new conventional loan.