01Short answer
There is no reliable public net worth figure for Mamdani's parents that should be treated as political evidence.
The public record identifies their work: Mira Nair is a filmmaker and Mahmood Mamdani is a scholar. That tells readers about biography and intellectual background, not a verified family balance sheet.
Unsourced net worth pages are weak evidence. Financial claims about Mamdani himself should be checked against official disclosures, campaign finance records and salary rules.
02Why the search appears
Family wealth searches usually try to answer whether a politician's affordability politics are authentic. That is a fair political question, but unreliable numbers do not answer it.
The better evidence is his housing work, campaign finance, donor base, policy programme, budget choices and whether the mayoralty delivers for renters and workers.
03What to check instead
Use official financial disclosures, campaign finance filings, city salary information and the delivery record. Those records are stronger than celebrity style wealth estimates.