Julian,
I agree; large houses are very profitable. One stop; no driving around; loading and unloading. Back tracking to collect, etc.
The average house over here is $250.00 to $400.00. Most smaller homes are done by the owner or not done at all.
Too bad because I think it is a good market; $125 to $200 per. Depends on the class of people living there.
Strange; but only upper middle and upper class pay to get their windows cleaned; houses cleaned; lawns cut, etc.
We are all equal in my book (and in God's book) and I have found most people of all classes feel the same.
If they are a jerk; charge them a jerk fee. If they are really nice; give them a "nice" discount.
Go for what you want; go for it all and do not look back.
You will never catch a large fish if you do not put out lots of bait.
I would distribute lots of flyers, knock on a lot of doors; "Hi; I am Julian; I am expanding to this area with my window cleaning services and am offering an introductory price of $ off for the first cleaning all this month (week, etc).
"Your rate would be $ if you are interested." Have the price ready ahead of time if possible; or a general idea; be aggressive. "We now do the Smiths down on the corner. Would love to have your business; here is our card"
Then go by again in a month and let them know you are serious. Go back in a couple of months. It will pay off.
Dress well; proffessional. Shirt with Logo, name. Smile. Beleive in yourself. If you look good it will help your chances a lot. You will succeed. Set a goal and go for it.
Hugs,
Texas Girl