Ive done car valeting, carpet cleaning, pressure washing,gutter cleaning, fsg and con roofs
A lot of it is going to be area dependant. In yorkshire where i am for some reason people expect most of these services cheap.
Ive given out dozens and dozens of quotes for the above services and its pretty rare i can land jobs that can beat what i can earn on windows. Of course there are exceptions but generally in my area people wont pay it. I can be cleaning someones windows for £15 in 10 mins and they ask for an fsg quote. I quote say £120 because it will take 2 hours, they say no 9 times out of 10. They think 2 hours for 120 is a rip off but dont compute im doing that on the windows. For example pressure washing 60 quid an hour plus travel, chems, fuel, sand etc can bring the cost of an average driveway up to way way more than they where expecting....The same goes with the other sevcices generally.
Like i said though its area, i know some people do £500 plus a day on these services i just cant get those prices.
A good cream window cleaning round is hard to beat but its obviously really boring.
Theres nothing wrong in adding other services but if its just money that motivates you then put the effort into getting more window cleaning customers.
That said i setup pressure washing last year and i enjoyed it more than anything else ive done in the cleaning segment, took lots of pics and vids and although i didnt earn anymore than i could have done on the glass it was nice change to running about in and out of the van all day.
Next year ive made a plan to do 3 days window cleaning, keeping my favourite jobs, slowly dropping off those i dont like, still advertise for it but at higher prices, do a price rise across the board and try to make it as easy as possible. Then i will make a big push for the pressure washing to see if its something that i can morph into. But its not really for the money its just for a change and a challenge.