Yardi Matrix reported October 19, 2026 that U.S. advertised self-storage rates fell 1.8% year over year in September 2026, and every top 30 metro posted a month-over-month advertised decline. National supply growth is slowing, but street pricing is not recovering yet.
The October bulletin headline sums the cycle: "Slower supply brings little rate relief." That is the macro backdrop for REIT Q3 earnings the week of October 26 and for Andover's Pinehurst, Texas, acquisition the same week.
What Changed Between August and September 2026?
Yardi Matrix's September 2026 report pegged August advertised rates at -1.9% year over year. October's September reading is -1.8% YoY: still negative, but one tick less severe on an annual basis.
| Period (Yardi Matrix) | National YoY advertised rate change |
|---|---|
| June 2026 (July report) | -1.5% |
| July 2026 (August report) | -1.6% |
| August 2026 (September report) | -1.9% |
| September 2026 (October report) | -1.8% |
The August spike to -1.9% was the deepest YoY print in that four-month window. September did not snap back to growth; it merely eased the annual comparison slightly while sequential weakness spread across major markets.
Why Did All Top 30 Metros Decline Month Over Month?
Yardi Matrix's October 2026 release is blunt: all top 30 metros recorded month-over-month advertised rate declines in September. That is a breadth signal. When only a few markets soften, operators can blame local lease-up. When every major metro moves down in the same month, the story is national demand and pricing discipline heading into Q4.
Context from adjacent October data:
- BMS Group's fall outlook cited Yardi Matrix pipeline metrics showing completions slowing but advertised rents still down through August.
- Capright's October REIT update documented high public occupancy with thin same-store revenue guidance.
- Storable's Q3 Pulse showed 78.1% national occupancy and 19.0-month average length of stay.
Occupancy can hold while advertised rates fall because operators prioritize retention over empty-unit specials, and because in-place rents still exceed street offers in many markets.
Is the Construction Pipeline Still the Story?
Yardi Matrix frames September 2026 as a month where easing development activity failed to lift advertised pricing. That matches BMS's projection of roughly 52.93 million NRSF of 2026 completions, down nearly 19% from 2025, with 594 projects under construction nationally as of August.
The industry is past peak deliveries in many metros, but lease-up inventory and weak housing turnover still cap street rates. SSA's October rate survey tied muted move volume to mortgage rates above 7% and refinancing stress on 2021-2022 vintage loans.
Supply slowing is necessary for rate recovery. September 2026 data says it is not sufficient on its own.
What Should Operators Do With a -1.8% National Print?
Do not confuse occupancy with pricing power. If your facility is full but your move-in special is deeper than last year, you are living the Yardi headline.
Watch sequential breadth, not just YoY. When all top 30 metros decline month over month, local "we are different" stories need hard StorTrack or Yardi submarket proof.
Pair street data with retention metrics. Storable's 19.0-month average stay implies revenue growth may come from keeping tenants, not from raising asking rents on vacant units.
Underwrite acquisitions on operating lift. Buyers like Andover on SH 249 are explicitly buying lease-up and platform upside because national advertised growth is not doing the work.
The Numbers Worth Writing Down
- -1.8%: national YoY advertised rate change in September 2026 (Yardi Matrix, October 19, 2026)
- 30/30: top metros with month-over-month advertised declines in September
- -1.9%: prior month's national YoY reading for August 2026
- 78.1%: Storable Q3 2026 national occupancy (operator benchmark contrast)
- 19.0 months: Storable Q3 average length of stay
- ~19%: projected drop in 2026 completions vs. 2025 (BMS citing Yardi pipeline data)
Advertised Rates Lag the Supply Fix
Yardi Matrix's October 2026 national report confirms the self-storage market entered Q4 with negative year-over-year advertised pricing and universal monthly declines across major metros. Supply is easing, but the rate line will not inflect until demand accelerates or competitive discounting stops.
Public REIT prints will test whether ECRI and move-in rent can outperform street indices. Independents should assume street benchmarks stay defensive through year-end unless their submarket data proves otherwise.
Sources
- Matrix Self Storage National Report – October 2026, Yardi Matrix, October 19, 2026
- Self Storage National Reports Archive, Yardi Matrix
- Yardi Matrix September 2026 Report (August 2026 rates), Your CAIO
- Storable Q3 2026 Industry Pulse, Your CAIO
- BMS Fall 2026 Market Outlook, Your CAIO