U.S. advertised self-storage rates fell 1.9% year over year in August 2026, according to Yardi Matrix's September 23, 2026 national bulletin. That is the third straight month of deepening year-over-year declines after July's 1.6% and June's 1.5%, and it lands the same week Inland ALT REIT closed $32.2 million of Wisconsin acquisitions while buyers still chase stabilized assets.
The report is not a demand collapse story. Occupancy has stabilized. Revenue growth is still stuck because street pricing, lease-up inventory, and weak housing turnover keep advertised rates in the red.
What Did August 2026 Advertised Rate Data Show?
Yardi Matrix's Santa Barbara release documents national advertised rent performance for August 2026:
| Metric | August 2026 reading |
|---|---|
| National YoY advertised rate change | -1.9% |
| Prior month (July) YoY | -1.6% |
| Prior month (June) YoY | -1.5% |
| Top-30 non-climate YoY gainers | 4 metros |
| Top-30 climate YoY gainers | 2 metros |
| Top-30 MoM gainers | 3 metros |
The non-climate winners were Minneapolis, Salt Lake City, Indianapolis, and New York City. Climate-controlled annual gains appeared only in Austin and San Francisco. Month-over-month advertised growth was even narrower: Indianapolis, Detroit, and San Diego alone.
That concentration matters for operators underwriting portfolio-wide rate increases. National averages hide a market where most large metros still discount to fill units delivered in 2024 and 2025.
Why Are Advertised Rates Still Falling if REITs Raised Guidance?
Public operators entered fall 2026 with better occupancy and move-in rate prints than they had in 2024 or 2025. TractIQ's Q2 2026 REIT report showed weighted same-store occupancy at 92.9% and positive move-in rates at three of four REITs.
Yardi Matrix's advertised-rate series measures what facilities publish to win the next customer, not what legacy tenants pay on existing leases. The September 2026 bulletin explicitly cites "the historically wide gap between in-place and street rates" as pressure on revenue growth even after occupancy stabilizes.
"Although occupancy appears to have stabilized, revenue growth remains pressured by the historically wide gap between in-place and street rates."
That split explains how REITs can raise full-year guidance while national advertised rents still print negative 1.9% year over year in August. Same-store revenue follows in-place rent rolls; advertised rates follow competitive fill strategy.
How Does Supply Still Shape the August 2026 Picture?
Yardi Matrix ties the August 2026 softness to three structural forces:
- Elevated recent deliveries in many metros, even as the national development pipeline slows
- Domestic migration and home sales stuck in a multi-year slump
- Inflation continuing to weigh on household budgets
The report warns that "record oversupply in many markets could prolong recovery for years." That language is stronger than a seasonal dip. It aligns with Marcus & Millichap's September 2026 outlook showing national vacancy stabilizing near 11% while development starts fall, but completed inventory still absorbing.
The September 2026 national report monitors 2,392 self-storage properties in various stages of development and maintains operational data on 33,283 completed U.S. facilities. Pipeline moderation at the national level does not erase local lease-up boxes still competing for the same move-in cohort.
What Should Operators Do With a -1.9% Advertised Print?
Stop treating one positive occupancy month as rate recovery. Stabilized occupancy plus negative advertised growth is the base case Yardi Matrix describes for August 2026. Revenue management should assume street rates stay promotional until local supply per capita falls, not until calendar season changes.
Underwrite metro by metro, not REIT by REIT. Four non-climate gainers out of 30 top metros is not a broad recovery. List Self Storage's mid-September deal tape showed buyers paying for tight supply in Kansas City while Monroe, Georgia, traded at 17.3 square feet per capita and $0.66 walk-in averages. National -1.9% averages both stories.
Watch construction cost inputs when planning new supply. TractIQ and Arco Murray's September 2026 construction dataset gives developers another reason to slow greenfield starts in oversupplied metros. Yardi's oversupply warning and hard advertised declines make speculative lease-up harder to finance.
The Numbers Worth Writing Down
- August 2026 national YoY advertised rates: -1.9% (Yardi Matrix, Sept. 23, 2026)
- Sequential YoY trend: -1.5% (June), -1.6% (July), -1.9% (August)
- Non-climate YoY gainers (top 30): Minneapolis, Salt Lake City, Indianapolis, NYC
- Climate YoY gainers (top 30): Austin, San Francisco
- MoM advertised gainers (top 30): Indianapolis, Detroit, San Diego
- Development universe tracked: 2,392 properties in pipeline stages
- Completed facility database: 33,283 U.S. properties
Advertised Rents Lag the Turn
Investors and operators spent summer 2026 celebrating fewer move-outs and raised REIT guidance. Yardi Matrix's September 2026 national report is the sober counterweight: advertised rates still fell 1.9% year over year in August, and most top metros never posted positive annual growth.
Transaction volume is recovering. Large sponsors are still buying. The rate line on the street, however, will stay defensive until local supply clears and housing turnover returns. Occupancy stabilization is step one. Advertised growth is still step two, and August 2026 data says that step has not arrived nationally.
Sources
- Soft Demand, Lingering Lease-up Supply Tame Self Storage Rate Growth, Yardi Matrix Blog, September 23, 2026
- Yardi Matrix Rent Rolldown Risk August 2026, Your CAIO
- TractIQ Q2 2026 REIT Turnaround, Your CAIO
- Inland ALT REIT Wisconsin Acquisition, Your CAIO
- TractIQ Arco Murray Construction Cost Dataset, Your CAIO