Daniel what a great Lionel find...I know G-man24 felt it was a #189 Villa made from 1923 -1932 but I thought that it could also be a #912 " Suburban Home" made in a variety of colors from 1932-1942. The 912 was also offered as part of a "landscaped plot" as were many of Lionel's other tinplate homes. Here is a cut from the 1936 catalog. Note the second plot down on the right hand side, to me it resembles the house that you found. However, I also have a cut from the 1927 catalog that shows the #189 Villa and candidly the difference between the houses is not apparent. It is very possible that Lionel continued to make the same structure but with a change in colors or some other detail simply changed the number in 1932.
Here is a cut from the 1927 catalog, showing the #189 Villa in the lower right hand corner. As you can see, the structure or house itself is very hard to differentiate from the #912 Suburban Home. So who knows. Both houses were made in quite a variety of colors and the #189 / #912 combination was made for nearly 20 years...obviously very popular
Anyway Daniel...as always a great find. I also loved the signals you showed as well, although I must admit I do not know the purpose of most of them.
Best wishes
Don