If you are serious about your business buy a van mount, no smaller than 350l ideally 500l+. You may want a back pack too as it will be more convenient than dragging the hose out.
Very approximately 25l will do one 3/4bed semi, but you’ll use much more in the beginning with first cleans and refining your technique.
Yes, spotless water filling stations are springing up all over the country, or sometimes window cleaners will sell water to each other.
Usually arrange to do it a few days later so hopefully you can do a few together rather than keep swapping from canvassing mode to cleaning mode.
I recommend just using your own name as I feel it gives customers piece of mind about who they are dealing with, and there will be dozens of ‘initials’ window cleaning in your town so it can be difficult to stand out.
Buy a van, don’t have to spend mega-bucks, just something tidy and presentable. Customers would prefer to see you in a van as it is all together more professional.
Wfp gear can hold its value secondhand, and be easy to be stung if you don’t know what you are looking out for. There’s not always a huge amount to be saved over buying brand new and as newbie it’ll be easier to get set up, rather than trouble shooting faulty equipment.
Marketing is a how long is a piece of string question, you might hit on easy patches and get tonnes of enquiries from walk ups or recommendations. Or you may have to slog it out with leaflets and canvassing. I would say to have a budget of around 3x the expected round value this would see you in good shape. Eg £4000 per month, would want £12000 for marketing.