I agree with the above post,
however I would urge you to think carefully about the timing. The economy is changing for the worse and my own belief is that times will become hard for all small business's let alone the domestic cleaning industry. Setting up at the moment may well be more challenging than normal but probably not impossible. On the plus side you have a very stable financial position which should make your risk minimal. My advise would be to build the business organically and not invest much money untill your client list is enough and growing.
My own thoughts is domestic cleaning like pressure washing will see a reduction in demand as the economy suffers (it is a luxury in many ways). Maybe you would consider putting it off for 12 months to see what occurs?
steve