I wanted to take a stab at something different than everyone else. This is just a straight interpretation of the words Mars and Hill. No houses... all real estate logos use houses and I think it's just too overdone and unnecessary. I doubt anyone will be confused by the word realty in your name.
Very simple design, does have some appeal. Kind of like impressionist art...Thanks for joining in. I think the reason for the house is so that the logo can stand on it's own without the words and still convey the same message.
I'm glad you like my design. I think it makes a great logo. It's less like an illustration or whole-page type of layout.... which tends to make a better logomark.
I've added a house as to your suggestion. and changed the overall proportions so it would look good on signage.... or anything you might print it on. It also looks great in a single color, which even now-a-days is important if you need to print on a laser printer, copy machine... or things like pens and keychains.