What is a Landing Page?
A landing page is any page on a website where traffic is sent specifically to prompt a certain action or result. Think of a sales pitch. On a Landing Page the point is to make your sales pitch and make it good and the end result should be a sale.
I have seen many REALTOR landing pages that they pay for PPC ads to bring people to these pages and these pages are horrible and give the visitor no reason to fill out the form or do whatever it is you want them to do.
I will not admit to being good a creating Landing Pages for Real Estate or any other field for that matter. But, I did find this great list of articles from Copy Blogger that has tons of great info that REALTORS could apply to their Landing Pages.
If you are running PPC campaigns for Email Campaigns you should read the articles listed in the linked article and see how yours compare.