-
I like it, but the style you used to illustrate the house (cartoony, with slanted walls/window panes) may not be the best representation of a professional architectural firm. Perhaps a more iconic styling with straight, parallel lines would be better?
It'd also be cool, if you could get the H centered under the mark, so it could act as the tree trunk. That might not be doable, but I think worth trying.

thanks Sean!!