The incident occurred in east Delhi's Trilokpuri area early due to an electrical short circuiting in one of the shops, the officer said.
At least 16 fire tenders were pressed into service and the flames were doused in two hours, he added.
Photos: Yami Gautam shoots for 'Sarkar 3' in Mumbai
Caroline Wozniacki's hot vacation photos will set your pulse racing
Photos: Here's Ishant Sharma with the girl who clean bowled him!
Photos: Sonam Kapoor, Sonakshi Sinha at Mumbai airport
Photos: Harshvardhan Kapoor at restaurant in Bandra
Film Review: Is Befikre worth a watch?
Bollynews Fatafat: Rajnikant rejects Aamir's proposal!
Aaj Ka Star Punch: Rani shares daughter Adira's photos
OMG! These Bollywood stars were reported dead on internet