But the city is rapidly growing - with more than 18 million people now crowded into the Indian capital - and building violations are nearly impossible to stop.
A massive fire broke out in Delhi's Karol Bagh in the early hours on Tuesday.
Delhi's urban development minister Satyendar Jain said authorities appeared to have been negligent in enforcing building laws in the surrounding area.
G.C. Misra, Delhi fire brigade director, said the blaze had been brought under control and that 35 people were rescued by firefighters in an operation lasting several hours.
More than 20 fire tenders were rushed to the spot and rescue operations were underway, it said.
A further 35 people had been rescued, authorities confirmed. A concert by Vishal Dadlani was to take place this evening.
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Police said they were investigating the cause.
Indian Twitter user Vikas Tripathi, sharing the video, wrote: "Death toll likely to rise as people jumped off the building to save themselves. The status of the staff who jumped is yet to be known". Many were severely injured and have been rushed to Dr. Ram Manohar Lohia Hospital.
Meanwhile, the vice-president of the Delhi Hotel Association Balan Mani told ANI that all fire norms were maintained in the hotel.
"It was due to a fire in ducting because of which it spread to the hotel rooms". All norms were followed here. All norms were followed here; license is issued only after inspection. "Mishaps can occur in a house as well", he said.
Prime Minister Narendra Modi also expressed grief on the incident and offered condolences to the family of those killed.
In December, eight people were killed when a fire engulfed a hospital in Mumbai. "Many people were still fast asleep at that time", he said.