There is something written under the word CARD. It looks like "Stoyle W/Z Builder." I think the house is built in a city.
I'm not placing it in Brooklyn, New York, but the width of the house looks about as wide as a building lot in Brooklyn. And it seems to be built on a double lot, which was typical when Brooklyn's neighborhoods nearer to Manhattan (Brooklyn Heights, what's now called Carroll Gardens, Boerum Hill, Fort Green, and Park Slope) still had lots of single-family homes (as opposed to the brownstone row houses that are prevalent there today).
On the far right is a wall covered with ivy; it looks to be three or four stories tall, perhaps brick but may more likely be brownstone. You still see ivy covering the exposed side walls of brownstones at the end of a row in Brooklyn, as well as in other places, I presume.
It's also very common today in Brooklyn to use the word "garden" to describe the small back yard area behind a house. Was that true circa 1910 in the U.K.?
In the U.S., it's standard to call the upper floor of a building with two floors the second story. I've heard that floor called the first floor in the U.K. The writer uses first floor and second floor, and he has adopted the American spelling of "story."
But, if had he been in the U.S. for any length of time, would he have been more likely to use dollars than pounds when speaking of money? Or was he using pounds for the sake of his correspondents?
The names Sally and Tom (I think) are in the text of the post card. Could Sally be the woman in the window. Frank and Timmie (?) are the recipients. Perhaps these latter two are brothers of Ted? Maybe they are together in one of the U.K censuses.
John