The honest answer
Palermo has no station lockers because Buenos Aires doesn't have any. What luggage-storage listings call 'Palermo Train Station' is actually the Palermo stop on Subte Line D, an interchange with the San Martín commuter rail at Av. Santa Fe and Av. Juan B. Justo — a transfer point, not a terminal with a left-luggage counter. There is no cheaper, closer answer hiding nearby; the realistic options are the shopfronts booked through an app network.
No lockers, full stop
Guides to the city are consistent on this point: none of Buenos Aires' main historic stations — Retiro, Constitución, Once — have public lockers or left-luggage counters, a policy one recent guide attributes to security. An older forum thread suggests Retiro itself never had a baggage room, though its adjacent long-distance bus terminal reportedly sells access to physical lockers via a token bought at an on-site kiosk — that system predates the current app networks and any peso price attached to it is now meaningless. Palermo's Subte/rail interchange was never part of either system.
The app-based alternative
With no station option, the practical answer is a network of partner shops, cafés and hotels that take bags for a daily fee, bookable in advance through an app. Radical Storage is the most heavily represented operator in Palermo, with individual shopfront listings from $3.90 to $5.00 per bag per day and a $3,000 security guarantee attached to each booking. Other networks cover the barrio too: Bounce reportedly lists a convenience store near the Palermo interchange from around $3.25/day, Stasher's Palermo page advertises hotel, shop and locker points from $3.69/day with guaranteed coverage up to $1,300, and LuggageHero quotes an hourly or daily rate from $1.49. Several Radical Storage listings market 'no size restrictions' and no extra charge for a bag's weight or dimensions, though that's the operator's own claim rather than an independently checked limit — worth confirming at booking if travelling with something oversized.
Book ahead, mostly
At least two Radical Storage partner shops in the Palermo/Villa Crespo area state plainly that they don't accept walk-ins or cash on the day — booking and payment happen online first. That matters for the Plazoleta Julio Cortázar drop point at Nicaragua 4806 in Palermo Soho, since an independent city guide describes what looks like the same address, run as a standalone business called Luggage Storage BA, as not requiring a reservation at all. The two accounts don't fully reconcile, and the simplest explanation is a difference between booking through the app and turning up at the shop directly. Either way, booking ahead through the platform removes the risk of a wasted walk.
Area by area
Palermo Soho, centred on Plaza Serrano, is where the Plazoleta Julio Cortázar listing sits, a few blocks from the square itself and from Plaza Armenia. Toward the interchange and Palermo Hollywood's restaurant strip, the Palermo Train Station listings are the closest option to where most visitors actually arrive. Near the park end of the barrio — Bosques de Palermo, Palermo Chico and MALBA — the Las Heras Park shop on Sánchez de Bustamante opens from early afternoon. Out toward the Racetrack and Polo Field, the Hipódromo Argentino de Palermo listing covers that side of the neighbourhood, while the Mercado de las Pulgas and Palais Rouge points sit further into Palermo's commercial stretch.
What it actually costs
Expect $3.90 to $5.00 per bag per day at most individual Radical Storage shops in Palermo, occasionally undercut by network-wide 'from' rates on hub pages. Bounce, Stasher and LuggageHero all advertise lower entry prices, down to roughly $1.49, though those figures come from the operators' own marketing rather than a location-by-location check. Any price quoted in pesos is worth treating with more suspicion than one quoted in dollars — Argentina's inflation moves fast enough that a peso figure printed even a year ago tells you little about what a locker or drop-off actually costs today, while the dollar rates the app networks list are reset more often and travel further.
Peak times and safety
Palermo's busiest commercial strips draw enough foot traffic that they're a known target for pickpockets, and one published guide describes witnessing repeated phone and wallet thefts from diners in the area — treat that as one writer's account rather than a citywide statistic, but it's a reasonable argument for not leaving valuables loose in a bag you're about to hand over. The security guarantees attached to these bookings — $3,000 through Radical Storage, up to $1,300 through Stasher — are the safety net if something does go wrong, though neither operator's testimonials surfaced any complaints to weigh against the praise; that's as likely to reflect curated reviews as a spotless record.
