Is it safe to give copies of ID cards and real estate licenses to others?

It's not safe. Copy of real estate license and ID card can't be lent to others casually, which will inevitably lead to personal privacy leakage. There will also be certain legal risks.

It is risky to send photos of your ID card to others. Giving the photo of your ID card to others may make use of your ID card to commit illegal and criminal acts and endanger your personal and property rights. According to the regulations, identity cards are personal documents, and resident identity cards may not be rented, lent or transferred. Do not use other people's ID cards, or you will bear the corresponding legal consequences.

Legal basis:

People's Republic of China (PRC) Civil Code

Article 1032 Natural persons have the right to privacy. No organization or individual may infringe upon the privacy rights of others by spying, harassing, exposing or making public.

Privacy is the private space, private activities and private information that natural people live in peace and don't want to be known by others.

People's Republic of China (PRC) Identity Card Law

Sixteenth one of the following acts, given a warning by the public security organs, and impose a fine in 200 yuan, illegal income, confiscate the illegal income:

(a) using false certification materials to defraud the resident identity card;

(2) Renting, lending or transferring a resident identity card;

(3) illegally detaining another person's identity card.