New York's 7th Street Burger, a fast-growing smash burger chain, is planting its flag just off Rittenhouse Square, taking over the former Amma's South Indian Cuisine space at 1518 Chestnut Street. The concept leans hard on a stripped-down menu, smashed patties, fries and late-night hours, which should slot neatly into Center City's post-dinner crowd.
As reported by the Philadelphia Business Journal, the lease covers the Chestnut Street storefront and marks another national brand moving into the neighborhood. The outlet noted that there is not yet a public opening date for the Rittenhouse location.
What to expect
According to the chain's own menu, 7th Street Burger builds its lineup around single and double smash burgers with American cheese, grilled onions, pickles and house sauce on a Martin's potato bun, plus fries and an Impossible patty option, per 7th Street Burger. The The Philadelphia Inquirer has reported that the company keeps prices in the relatively affordable zone, with single burgers around $6.50 and doubles near $9.50, and founder Kevin Rezvani has described the goal as becoming the "In-N-Out of the East Coast." The no-frills approach and late-night service have helped the brand scale quickly in New York and beyond.
Why Rittenhouse?
The Chestnut Street space is listed at roughly 2,500 square feet and marketed as a second-generation restaurant with existing furniture, fixtures and equipment, plus an upgraded kitchen that brokers say can speed up openings, according to a property packet from Equity CRE. Meanwhile, Center City District data shows retail occupancy and daytime foot traffic have rebounded since the pandemic, making the prime blocks along Chestnut increasingly appealing to quick-serve chains, according to the Center City District. For a brand that banks on late-night crowds, being close to hotels, offices and nightlife is a strategic bonus.
Opening timeline
The Philadelphia Business Journal has not reported a specific opening timetable for Rittenhouse. Over in Fishtown, however, the chain's locations page lists a site at 1215 Frankford with an April 1, 2026 opening date, suggesting that 7th Street Burger is moving quickly to establish a foothold in the city, according to 7th Street Burger. If the Rittenhouse buildout follows a similar pattern, neighbors could start seeing construction permits, branded signage and an eventual opening announcement in the near future.
Bottom line
If all goes as planned, 7th Street Burger will bring a relatively low-cost, late-night burger option to a Rittenhouse dining strip better known for sit-down restaurants, while reinforcing a broader trend of New York concepts heading down I-95 into Philadelphia, as noted by The Philadelphia Inquirer. For now, neighbors, brokers and burger fans will be watching for that official opening date and any tweaks the company might make for Center City customers.
