Hearing the voices of all Grenfell Tower survivors and bereaved families is of "great importance" to the work of the public inquiry.
The judge-led probe into the disaster which killed 71 people is holding two days of procedural hearings, focusing on case management matters such as timeframes, witnesses and the disclosure of evidence.
Richard Millett, counsel to the inquiry, said he hoped those who escaped the blaze or lost loved ones would find "some measure of closure" by providing evidence to the investigation.
He told a hearing at Holborn Bars in central London, attended by former residents and dozens of legal representatives, it was crucial to ensure "something like this never happens again".
A total of 270,000 documents is expected to be submitted to the inquiry to assist its work, it was heard.
Sir Martin Moore-Bick, the retired Court of Appeal judge leading the process, hopes to deliver an interim report into the fire's causes and the emergency response by next autumn.