hi there
may i make a suggestion,
ring two or three of the local companies and tell them that you want a cleaner for your house, and then get them round to quote.
that will tell you about the service they provide, pricing, how they sell etc etc.
ypur local business link can provide you with loads of general business info, and indeed when you open a business bank account again they will provide you with plenty of info.
with regards to marketing, newspaper, website, and then leaflet drops, and loads of them to generate interest, every day should involve sales activity.
once you then get some interest you need to then visit potential clients to quote and sign them up, then start to do the cleaning, at that stage you then start to concentrate your marketing into the areas that you have customers, to create economies of scale.
regards
martin