Horizon Storage Group closed on Jefferson Valley Self Storage on June 29, 2026, acquiring 55,311 rentable square feet and 405 units at 87% occupancy in a Westchester County trade area with just 4 net rentable square feet of supply per capita within three miles. JLL Capital Markets represented seller Columbia Pacific Advisors and arranged acquisition financing through Andover Lending, a joint venture between Andover Properties and TPG Angelo Gordon. Financial terms were not disclosed.
The deal is a textbook Northeast infill trade: a 2022 big-box conversion on a pad that cannot be replicated, financed by a lender already active in self-storage, in a submarket where supply constraints matter more than Sun Belt scale.
What Did Horizon Storage Actually Buy?
Jefferson Valley Self Storage sits at 621 Bank Road in Jefferson Valley, New York, in the White Plains corridor. The single-story property spans roughly 4 acres with 55,311 rentable square feet across 405 units sized from 20 to 300 square feet.
The building started life as a big-box retail store in 1993. Columbia Pacific Advisors completed a comprehensive renovation in 2022, including a new roof and building-system upgrades, before bringing the asset to market. Amenities include climate-controlled units, gated and drive-up access, parking, video surveillance, and tamper-resistant locks.
Multi-Housing News reported that CubeSmart previously managed the facility, per Yardi Matrix records. Horizon Storage Group now owns the real estate outright while operating in a market where Northeast buyers paid up throughout May 2026 for supply-constrained coastal and suburban assets.
How Tight Is the Local Supply Picture?
Scarcity is the underwriting story. Multi-Housing News cited Yardi Matrix data showing only two self-storage facilities within a three-mile radius, translating to 4 net rentable square feet per capita for surrounding residents.
Compare that to Cape Coral's 471,280 square feet of scheduled 2026 deliveries or Austin's 8.99 square feet per capita on List Self Storage's June 24-29 transaction roundup. Jefferson Valley is the opposite trade: limited competing inventory, affluent demand, and a conversion that sidesteps greenfield zoning fights.
JLL's marketing materials, cited by Connect CRE, put more than 81,000 residents within five miles with an average household income of $189,722. The facility also sits just off U.S. Route 6 with access to the Taconic State Parkway and U.S. Route 202, giving it regional draw without relying on a dense urban core.
Who Financed the Deal and Why Does That Matter?
Andover Lending provided acquisition financing. The platform is a joint venture between Andover Properties, operator of the Storage King USA brand across 450-plus properties, and TPG Angelo Gordon.
That pairing matters because it connects the Northeast acquisition bid to an operator-lender stack already writing self-storage paper. Andover's May 2026 Newbury, Massachusetts acquisition showed the same buyer type chasing large-format suburban assets north of Boston. Jefferson Valley extends the pattern into Westchester: institutional capital plus dedicated storage lending, not generic bridge debt from a generalist fund.
Horizon Storage Group is the equity buyer. The seller, Columbia Pacific Advisors, exited a stabilized 2022 conversion at 87% occupancy rather than waiting for a lease-up premium that a tighter market may already have priced in.
How Does Westchester Fit the Northeast Rate Story?
National advertised rates still face year-over-year pressure. Yardi Matrix's June 2026 report documented a 0.8% month-over-month gain in May 2026 while year-over-year rates declined 1.8%. Sun Belt metros with elevated supply continue to underperform.
The Northeast is diverging. Multi-Housing News noted Boston leading Yardi Matrix's top 30 metros with 2.1% month-over-month advertised rate growth to $20.16 per square foot in May 2026, while New York City's average advertised street rate reached $34.74 with a 1.0% sequential gain.
Jefferson Valley is not Manhattan pricing, but it sits inside the same regional bid for scarce square footage. Buyers are not underwriting Florida-style absorption risk. They are underwriting income durability on pads that competitors cannot easily replicate.
What Should Operators Take From This Closing?
Retail conversions remain the Northeast supply pipeline. When municipalities resist new self-storage in commercial zones, adaptive reuse of big-box boxes becomes the development path of least resistance. A 1993 retail shell with a 2022 storage rehab is faster to stabilize than a greenfield entitlement in Westchester County.
Lender specialization follows operator specialization. Andover Lending's involvement signals that self-storage acquisition financing is increasingly tied to platforms that understand NOI, occupancy seasonality, and lien compliance, not just LTV math on generic commercial real estate.
Cap rate is only half the story. Four square feet per capita and $189,722 household income within five miles explain why a 405-unit suburban asset commands institutional attention in the same month Public Storage agreed to pay $1.2 billion for Public Storage Canada. Different scale, same logic: buy markets where supply is hard to add.
The Numbers Worth Writing Down
- Buyer: Horizon Storage Group
- Seller: Columbia Pacific Advisors (JLL represented)
- Closing date: June 29, 2026
- Size: 55,311 rentable square feet; 405 units (20-300 SF)
- Occupancy at sale: 87% leased
- Site: ~4 acres at 621 Bank Road, Jefferson Valley, NY
- Conversion: 1993 big-box retail; comprehensive 2022 renovation
- Local supply: 4 net rentable square feet per capita within 3 miles (Yardi Matrix, via MHN)
- Five-mile demographics: 81,000+ residents; $189,722 average household income (JLL)
- Financing: Andover Lending (Andover Properties / TPG Angelo Gordon JV)
- Prior manager: CubeSmart (per Yardi Matrix)
Scarcity Still Clears in the Northeast
June 2026 transaction volume skewed Texas-heavy on List Self Storage's weekly roundup, but the Northeast bid never went quiet. Horizon Storage's Jefferson Valley closing is a reminder that institutional buyers will still pay for 87% leased infill product when per-capita supply reads 4 square feet and household income clears $189,000 within five miles.
The Sun Belt gets the pipeline headlines. Westchester gets the occupancy.
Sources
- Horizon Storage Acquires Jefferson Valley Facility, Connect CRE
- Horizon Storage Buys Suburban NYC Facility, Multi-Housing News
- Yardi Matrix May 2026 Advertised Rent Report, Your Ciao News
- Northeast Self-Storage Acquisitions May 2026, Your Ciao News