How much do house painters cost?

Most of the usual house painting price goes towards labour and about 15-25% goes to paint and materials, painting and decorating is very labour intensive and requires a large amount of care and patience. So you will need to choice carefully.

What is a painters call out charge?

Painters don't normally apply a call out charge unless its a very small job.

Where could there be an extra cost?

There normally isn't any extra costings when it comes to house painting unless scaffolding is required, although a clear estimation should be supplied prior to commencing any work.