Range from the cheapest Paint hall, stairs and landing £400 (London Interior and Exterior based in E8) to the dearest Paint hall, stairs and landing £710 (LUCO - London Utility Company based in W1W).
Comparing painter & decorators estimates for Paint hall, stairs and landing gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for decorating your hallway and stairs by posting your job to painter & decorators in EC3V.