HMO management is an opportunity for letting agencies to drive more revenue, says the director of a lettings agency that’s established itself as an expert in the area. Neil Baldock, who co-founded Chelmsford-based Charles David Casson with his brother, Matthew, says the pair saw a niche in the market for HMO management after the law changed two years ago, which meant all properties with five or more people living in them had to be licensed.