Services useful for landlords?

[Joshuah Baker]

So I've poked around real estate investing, and I understand there are support services that might be useful for the real estate industry such as clean up services when old tenants move out. This is probably where I'm going to get my start. The average job around here pays 25-50k a year which is not going to be enough to bolster capital, and fix and flips get bought up fast. 

However there is a large construction, and real estate presence around here. Do you have any advice on how I can get in contact with landlords about offering clean up services, or things that might be overlooked that would add value. Such as focusing on efficiency and getting units cleaned up as to decrease turn around time for vacancies. All advice, and insights are appreciated.