For the better part of four years, a large share of American homeowners have been sitting on a mortgage rate they can’t replace. Selling means giving that rate up, and for plenty of them the math doesn’t work. A growing number have landed on another answer: keep the house and rent it out. Here’s what’s driving that shift, where it’s happening, and what it means if you’re one of the owners involved.
Key Takeaways
Roughly half of outstanding mortgages carry a rate below 4%, and 19.2% sit below 3%, according to Realtor.com’s Q2 2026 data.
Zillow found that 2.3% of homes listed for rent were previously listed for sale, the second-highest share in its nearly six-year record.
Accidental landlords are most common in buyer-friendly metros, with seven of the top ten in Texas or Florida.
Realtor.com’s investor data covers corporate-structured buyers, so most accidental landlords sit outside it.
Zillow cautions that many of these owners are handling rental rules and management for the first time.
The Lock-In Effect Is Still the Dominant Force
Mortgage rate lock-in hasn’t gone away. It has just started to age. According to Realtor.com’s Q2 2026 Outstanding Mortgage Data report, built on the FHFA National Mortgage Database, 19.2% of outstanding mortgages carry a rate below 3%, and another 29.9% sit between 3% and 4%. Only 22.5% carry a rate of 6% or higher. Loans originated between July 2019 and June 2022, the record-low-rate window, now make up a record 42.8% of the market. Realtor.com senior economist Hannah Jones described the unlock as real but gradual, and the company projects that if rates stay above 6%, loans at 6% or higher could reach 27% to 28.5% of the total by mid-2027. These are preliminary figures, since the release notes the latest quarter is typically revised up by about 1%.
Why Locked-In Owners Rent Instead of Selling
Owners who bought or refinanced at or below 3% have relatively inexpensive monthly payments, which makes renting the house out at a price that covers them a realistic option. For someone unwilling to take a serious price cut, renting buys time. Zillow Research found that 2.3% of homes listed for rent on its platform were previously listed for sale, topped only once in its nearly six-year record, in November 2022 at 2.4%. That spike followed a year in which mortgage rates climbed from 3.11% to 7.08%. Zillow calls today’s trend “choice-driven rather than shock-driven,” and notes that only 3.4% of new listings were priced below their previous sale price as of October 2025, which suggests these owners mostly aren’t selling from distress.
Where Accidental Landlords Cluster
The pattern tracks buyer leverage. In Zillow’s analysis, Denver had the highest share at 4.9%, followed by Houston at 4.2%, Austin at 4.1%, and Tampa at 3.7%. Seven of the top ten metros are in Texas or Florida. At the other end, Boston came in at 0.6%, New York at 0.7%, and Chicago at 1.3%. High-share metros tend to be places where for-sale listings linger and price cuts are common, while low-share metros are where competition for homes is hottest. Detached single-family homes account for the largest share, with 3.4% of single-family rental listings owned by accidental landlords, versus 2.2% of townhomes and 1.1% of condos. In the high-share metros, a reasonable assumption is that single-family rental competition may come from owners who never planned to be in the business. Our markets page is a useful starting point for gauging how crowded your local rental pool may be.
How Accidental Landlords Differ From Investors
The data separates the two groups. Realtor.com’s October 2026 investor report found that investors made up 10.7% of home purchases in the first half of 2026, that small investors accounted for 66.2% of investor purchases, their highest share in at least 15 years, and that large and mega investors sold more homes than they bought. One caveat matters: that report counts entities buying through corporate structures such as LLCs, trusts, and REITs, so an individual renting out a home they already own mostly falls outside it. Zillow’s measure has its own limit, since it counts only homes first listed for sale on Zillow, making it a floor rather than a full headcount. Either way, investors typically underwrite a purchase with rental income in mind, while accidental landlords arrive at ownership by default, often without a plan for the work involved.
What Accidental Landlords Tend to Underestimate
Most surprises show up in three places. The first is the real cost of carrying the property: the mortgage is only one line, next to property taxes, insurance, maintenance reserves, vacancy, and any management fees. A policy written for an owner-occupied home also generally doesn’t fit a tenant-occupied one. The second is compliance, from how a security deposit must be held and returned to notice rules, fair housing requirements, and local licensing. The third is screening and enforcement, since a lease is only as good as the tenant you choose and the consistency of your standards. Running the numbers before listing is the cheapest protection available, and our ROI calculator is built for that comparison. If you bring in a manager, our guide to what a property management agreement should cover is a good place to start.
Deciding Whether Renting Is the Right Move
Renting works best when a few conditions line up. If you expect to hold the property for several years, a low-rate mortgage is a real asset worth keeping. If you need sale proceeds to fund your next home, renting may be impractical however attractive the mortgage is. Distance matters too, since managing a tenant, vendors, and a compliance calendar from another city is a different job than managing them across town. If the numbers work and those conditions hold, renting can be a sound way to keep a low rate. If not, selling may be the cleaner choice, and it’s better to know that before signing a lease than after.
FAQ
What is an “accidental landlord”?
Zillow defines it as a home listed for sale for at least two weeks, delisted unsold, and then posted as a rental within three months.
How common are accidental landlords nationally?
Zillow found that 2.3% of homes listed for rent on its platform were previously listed for sale, the second-highest share in its nearly six-year record.
Is the mortgage lock-in effect going away?
Slowly. Realtor.com describes the unlock as real but gradual, projecting that loans at 6% or higher could reach 27% to 28.5% of outstanding mortgages by mid-2027 if rates stay above 6%.
Does renting always make more sense than selling?
No. It depends on whether rent covers the full cost of carrying the home and whether you need the sale proceeds for your next purchase.
Making the Rent-or-Sell Call With Real Numbers
Lock-in is easing, but it hasn’t disappeared, so a steady stream of owners will keep landing in the rental market by default rather than by plan. The ones who fare best run the full numbers up front and decide early who will handle the day-to-day work. If you’re weighing that decision now, or you already have a tenant in place and a growing to-do list, our property management team can take on leasing, screening, maintenance, and reporting so the home works like an investment instead of a second job.
