Burgers are one of the fastest-growing formats in Spanish organised dining, with close to 2,800 burger-led chain restaurants operating by March 2026, and the smash style has a following of its own: in a 2024 delivery-platform survey, 30% of Spaniards said they prefer a smash burger to a classic one.
Restaurant-ready premises are plentiful but not cheap in Madrid. The screen returned 692 matches there and 1,604 in Barcelona, with a median ask of €3,000 a month in Madrid and €1,995 in Barcelona. Almost every good option is a business transfer, so key money is the real entry cost.
In Barcelona, take Viladomat in Sant Antoni: the deepest young catchment, a C3 licence that allows late trading, a corner, and the lowest rent per m² on the list. In Madrid, Pradillo and Manuel Becerra are the economic picks, the first an operating restaurant with a terrace and the second the largest delivery catchment of the six. Sagasta at Glorieta de Bilbao is the late-night flagship if the brand needs one, at twice the rent per m².
2,296
restaurant-ready premises of 80–250 m² for rent in Madrid and Barcelona
€3,000 · €1,995
median monthly asking rent for that size, Madrid and Barcelona
23–32%
of each shortlisted site’s footfall falls between 7 pm and 1 am
€295,000
the highest stated key money on the list, at Viladomat