A new trend has saturated Boston’s rental market — micro apartments. Over 48% of studio and one-bedroom listings in the city measure under 500 square feet, according to a new study from Sol Place.

The sofa-bed company used Zillow listings to rank the 102 largest U.S. cities by percentage of studios and one-bedroom rentals with at or below 500 square feet of space. Boston claimed the third-highest percentage nationwide, just behind New York and San Francisco.

Of 5,028 rentals analyzed in Boston, 2,433 qualified as micro apartments. The space squeeze showed up most strongly in the studio apartment market, where around 78% percent of Boston listings were micro.

“The findings show that micro apartments are no longer just a design preference, but a reflection of an economic shift,” says Sol Place Founder Sean Yap. “As the cost of living continues to rise, and urban spaces become more scarce, square footage becomes the compromise many renters are making. Many people in Boston are left with smaller homes in exchange for accessibility and affordability.”