I dreamt that I am constructing a new house, on a 60ft x 40ft site and was yelling at some workers for not completing their jobs. Pl answer what does this mean.

One of the current prevalent theories of dreaming is that they help you to consolidate memories and solve problems in your waking life. It does this in a very abstract way which is confusing to the conscious mind. That is why we don't often remember our dreams, because they are of little use to our conscious mind.

Your brain knows exactly what the dream meant and what it was trying to do. That's all that matters, let it get on with it :)