Heir dream meaning is explained below using 4 different sources. Each interpretation is shown with its source.

Interpretation 1 — Dream Explanations - Anonymous

Dreams of an heir represent that you are coming into your inheritance of riches, power, wealth and talent. You are processing all that you have inherited from your familial bloodline. This could also be a spiritual dream where you are awakening to the fact that you are a descendant of the divine, and worthy of all good things in and of this earth.
Source: Strangest Dream Explanations Author: Dream Explanations - Anonymous

Interpretation 2 — Gustavus Hindman Miller

To dream that you fall heir to property or valuables, denotes that you are in danger of losing what you already possess. and warns you of coming responsibilities. Pleasant surprises may also follow this dream.
Source: Ten Thousand Dream Interpretation Author: Gustavus Hindman Miller

Interpretation 3 — Gillian Holloway

It signifies the opposite if you dream of falling heir to a legacy.

If you dream of making someone your heir, it foretells sickness.

Source: The Complete Dream Book Author: Gillian Holloway

Interpretation 4 — Margaret Hamilton

Literal successor
Source: Dream Dictionary Unlimited Author: Margaret Hamilton