There's lots of talk about standards in the domestic service industry: high standards, five-star standards, raising standards, impeccable standards.
But, there's only one set of standards that count. And, you won't find them in a book, a training program, or online:
Rather than serve as a surrogate client, the [estate] manager's job is first to help the team identify the standards that are used by its real clients [the principals], and then to do whatever can be done to help the team meet those standards.
- From Leading Teams: Setting the Stage for Great Performances, by J. Richard Hackman, Professor of Social and Organizational Psychology, Harvard University (Harvard Business School Publishing, 2002)