Well...it's a start. I think you've got a long way to go, and you seem to recognize that. But it's a start.
A few things off the top of my head:
1) I don't like the way you say "Real Estate" for some states and nothing for others in the menu. Pick one or the other for the menu (I'd say nothing) and stick with it.
2) You may also want to split up the menu in a similar manner to that of WPW. You see how it's split up into Free Newsletter, Categories, and Forums down the left side of the page? Do that with your menu so that it doesn't look like one big long confusing list of links.
3) As a potential buyer of US real estate (and yes, although I'm Canadian, this is in my mid-term financial plans), I'd like to know more about the areas I'm interested in buying in.
- What's the climate like?
- Population density?
- Major industries that drive the state/city economy?
- Physical characteristics of the land?
- Employment rates/sectors (although this crosses over into major industries)?
- New home development in the area/population growth?
- Arts/Entertainment scene?
- Prices on common household goods/services? (Cars, groceries, utilities)
In other words, you'll be better served expanding on your base concept of "tell homeowners what they'd need to know about an area and then refer them to a real estate agent".
Even though it's not American, you might also want to look at the city of Toronto for possible advertisers and expansion.
The Toronto Real Estate Board is the world's largest real estate board by far (I think their membership numbers are in 5 digits somewhere, but I forget), so you're bound to find some real estate agents here.