To dream of something being new represents new ideas, perspectives, or experiences. You may also be experiencing new feelings or a new relationship.
Alternatively, newness may reflect new skills, resources, or strengths. You are noticing yourself maturing in some way. A new identity.
To dream of a new house may represent a new perspective on a situation or a new lease of life. Seeing life differently in some way. A maturing view of yourself, your life, or the world.