Marcus & Millichap closed the sale of an 861-unit, 133,200-square-foot Storage Authority portfolio in Union Grove and Kansasville, Wisconsin, on September 3, 2026. A local ownership group sold to a national real estate investment firm in one of the largest self-storage transactions in Wisconsin by net rentable square feet so far this year, per the brokerage's press release.
The deal lands the same week sector data showed Midwest occupancy leading national gains and List Self Storage counted 37 August closings nationwide. Institutional capital is still buying scale in markets where supply pressure is manageable.
What Properties Changed Hands?
The Storage Authority portfolio spans three Racine County locations operated under the Storage Authority LLC brand:
| Address | City | Notes |
|---|---|---|
| 19031 Spring St. | Union Grove, WI | Main office location |
| 20915 Durand Ave. | Union Grove, WI | Second Union Grove facility |
| 22841 Durand Ave. | Kansasville, WI | Indoor and outdoor storage |
Together the facilities comprise 861 self-storage units totaling 133,200 net rentable square feet. Storage Authority serves residents and businesses across southeastern Wisconsin, with the Kansasville site offering outdoor storage for RVs, trailers, and seasonal equipment.
The seller was a local ownership group. The buyer was described only as a national real estate investment firm. Financial terms were not disclosed.
Why Did Marcus & Millichap Call This a Premium Midwest Trade?
Jon Silvers, associate director of investments at Marcus & Millichap, framed the transaction's significance in square footage, not unit count.
"At approximately 133,000 net rentable square feet, the Storage Authority Portfolio represents one of the largest self-storage transactions in Wisconsin by net-rentable square feet so far in 2026."
"Institutional-quality, larger-scale self-storage assets and portfolios continue to command premium pricing throughout Wisconsin and the broader Midwest."
Silvers and Sean Delaney, both based in Marcus & Millichap's Chicago Oak Brook office, marketed the property and procured the buyer. The geographic pairing makes sense: Chicago brokers know Midwest institutional buyers, and Racine County sits in the Milwaukee-Chicago commuter corridor where population density supports stable occupancy.
The deal follows a 529-unit Double D Storage sale in Monahans, Texas that Marcus & Millichap closed in August 2026 at 98% occupancy for a first-time Colorado buyer. The firm is active across market tiers: tertiary Texas for entry-level operators, institutional Midwest portfolios for national buyers.
How Does Wisconsin Fit the 2026 Acquisition Map?
August 2026 deal flow data shows buyers splitting between scarce coastal markets and value-add Sun Belt plays. Wisconsin represents a third lane: supply-constrained Midwest markets with institutional operating upside.
Yardi Matrix and Scotsman Guide both flagged Midwest and Northeast occupancy as the strongest regional gainers in Q2 2026, each up 1.7 percentage points quarter over quarter. Wisconsin was not among the Sun Belt metros drowning in new deliveries. Racine County's three-facility cluster gives a buyer immediate scale without assembling assets one at a time.
National buyers are not limited to oversupplied Florida and Texas markets where REIT portfolios posted double-digit rent declines. A 133,200-square-foot Midwest portfolio with local brand recognition and operational infrastructure trades on a different underwriting thesis: stable cash flow, manageable supply, and third-party management or rebranding optionality.
What Operating Profile Did the Buyer Acquire?
Storage Authority's tenant-facing features suggest a professionally managed, consumer-friendly operation:
- 24/7 gated access with personalized entry codes
- 24-hour video surveillance at all locations
- No deposits or administrative fees
- Free moving truck included with rental
- Month-to-month rental terms
- Indoor units plus outdoor vehicle and trailer storage at Kansasville
The Kansasville location at 22841 Durand Ave. was listed as a newer addition to the portfolio, expanding the operator's footprint along the Highway 11 corridor. The seller built a three-site cluster in a county of roughly 200,000 residents, then exited to institutional capital. That is the classic independent-to-institutional handoff pattern driving mid-2026 private-market deal flow.
What Does This Mean for Midwest Sellers?
Three signals for operators considering a sale in Wisconsin and neighboring states:
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Scale still commands attention. One hundred units in a tertiary market is a local trade. Eight hundred sixty-one units across 133,200 square feet gets national buyer meetings.
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Broker reach matters. Marcus & Millichap's Chicago Oak Brook team placed a Racine County portfolio with a national investment firm. Local-only marketing would have narrowed the buyer pool.
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Midwest fundamentals are improving on paper. Q2 2026 occupancy data supports pricing discipline. Sellers who waited through 2024's rate declines may find 2026 buyers more willing to pay for stabilized cash flow.
The Storage Authority sale does not reset Wisconsin cap rates. No price was disclosed. It confirms that institutional buyers are still underwriting Midwest scale in a year when headlines focus on REIT consolidation and Sun Belt distress.
The Numbers Worth Writing Down
- Closing date: September 3, 2026
- Total units: 861
- Net rentable square feet: 133,200
- Properties: 3 (2 Union Grove, 1 Kansasville)
- County: Racine County, Wisconsin
- Seller: Local ownership group
- Buyer: National real estate investment firm (unnamed)
- Brokers: Jon Silvers and Sean Delaney, Marcus & Millichap Chicago Oak Brook
- Wisconsin ranking (2026): Among largest deals by net rentable square feet
- Tenant amenities: 24/7 gated access, free moving truck, no deposit/admin fees
Scale Still Clears in the Middle of the Country
The Storage Authority portfolio is not a headline-grabbing billion-dollar REIT merger. It is an 861-unit, three-site cluster in a county most national investors cannot find on a map without help. That is exactly the deal type keeping Marcus & Millichap's self-storage desk busy in 2026.
Institutional buyers want scale without Sun Belt oversupply risk. Local sellers want liquidity without building a brokerage network. Wisconsin delivered both on September 3.
The Midwest is not flashy. It is transacting.
Sources
- Marcus & Millichap Arranges Sale of 861-Unit Three-Property Self-Storage Portfolio in Wisconsin, Marcus & Millichap
- Storage Authority LLC - About, Storage Authority
- Kansasville Self-Storage and Outdoor Storage, Storage Authority