354 Calle Fortaleza building sells for $2,350,000, up 23.7%
A historic commercial building at 354 Calle Fortaleza in Viejo San Juan has sold for $2,350,000 to a limited liability company, on a deed recorded June 22, 2026. The price is 23.7% above the $1,900,000 the seller, Fortaleza Development LLC, paid for the same building less than three years earlier.
Bought for $1,900,000 in 2023
The seller bought the building on a deed recorded October 17, 2023, for $1,900,000. The new price is $450,000 more than that purchase. A 2022 listing described the building as three levels plus a rooftop, with about 8,513 square feet inside. Before 2023, the building last sold on a deed recorded March 10, 2000, at $744,000.
While the seller held it, the building was its administrative office: permits for that office were filed on November 22, 2023 and December 26, 2024, both recorded as approved. Earlier permits on the property were for an engineering design office. The property sits in the San Juan historic zone, on a lot of 283 square metres.
Asked $2,950,000 in 2025
The building was first advertised for sale on October 20, 2025, asking $2,950,000, so the recorded price came in $600,000 below that first ask. The ad described a historic mixed-use building at the eastern end of Fortaleza Street, steps from Plaza Colón. Since August 15, 2026 the ads mark the property sold at $2,495,000, a figure that differs from the $2,350,000 on the deed.
Before the sale, unit 2 of the building was also advertised for rent at $8,000 a month, first on March 10, 2026.
A souvenir shop follows the sale
Three weeks after the deed, a single permit for the retail sale of gifts and souvenirs at the address was filed on July 13, 2026, and is recorded as approved. A single permit bundles in one application the use permit, environmental compliance, fire prevention certification, sanitary license and other approvals a business needs to operate.
An infrastructure pre-consultation for the same shop, filed on July 16, 2026, is incomplete. It is an optional orientation from the permits office before a project files, not a final decision.
