Ethel Winstanley who lives opposite said she was "shocked and saddened" by the news that three children had been found dead at the property.
Joy Devis, who lives a few doors away and knew the family, said she was devastated, describing them as a "lovely family".
More top news
Six people were injured after they were hit with the substance during an "altercation" between two groups at a shopping in east London.
Save Your Uber in London was set up after it was announced the firm would not have its licence renewed when it expires next week.
Survivors are still traumatised, homeless and want answers.