Key takeaways
- The national average annualized advertised asking rate per square foot rose 1.0 percent on a monthly basis to $16.22 for the combined mix of units and sizes.
- On a monthly basis, rates for both non-climate and climate-controlled units registered positive movement across 29 of the Top 30 metros.
- The national under-construction pipeline totaled 46.2 million square feet, or 2.2 percent of total stock, down 0.3 percent year-over-year.
- Phoenix and Sarasota-Cape Coral continue to rank highest in terms of under-construction supply, though both metros recorded negative movement month-over-month.
Rates continue to rise on a monthly basis
April saw the national average annualized advertised asking rate per square foot rise 1.0 percent on a monthly basis to $16.22 for the combined mix of units and sizes.
Over the past month, 29 of the Top 30 metros tracked by Yardi Matrix recorded positive growth in terms of advertised asking rates. San Antonio was the only metro on the list whose values remained flat month-over-month.
Year-over-year, however, rates for non-climate-controlled units registered negative movement across 29 of the Top 30 metros and across 27 out of the same 30 for climate-controlled units.
National pipeline slows down
April saw 2,560 self storage properties in all stages of development nationwide, with 618 properties under construction, or 2.2 percent of total stock, 1,642 planned and 300 prospective projects.
Across the U.S., there were approximately 46.2 million net rentable square feet under construction during the same month, down 0.1 percent since March 2026 and 0.3 percent since March 2025. Out of Yardi’s top 30 metros, only three saw positive movement month-over-month in terms of development, 12 metros’ registered negative growth and 15 flatlined. For a third month in a row, Portland, Ore. ranked last on the list, with an under-construction supply accounting for 0.5 percent of existing inventory, unchanged since February.
The three metros that recorded an increase in under-construction supply month-over-month were San Diego (3.1 percent, up 110 basis points), Houston (2.7 percent, up 10 basis points) and Boston (1.7 percent, up 40 basis points).
Phoenix and Sarasota-Cape Coral occupied the top two positions in the national ranking for the same metric, both at 6.5 percent of new development from existing inventory, despite seeing negative growth. Phoenix’s supply dropped 20 basis points, while Sarasota-Cape Coral’s recorded a steeper, 130-basis-point drop from March through April.
Read the full Yardi Matrix National Self Storage Market Outlook: May 2026.
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