Real estate photographers (at least in the US) need to understand that business is becoming very difficult for your best clients (upper-end listing agents). It's a great time to be a real estate buyer but it's a very bad time to be a seller. On the chart to the right (for the Seattle area) the bottom line is sales and the top line is number of homes on the market. Sales continue to drop and number of homes on the market continue to increase.
So you'll probably find discussions with listing agents more difficult these days. However, they need real estate photographers services more than ever. You need to be talking to them and reminding them that with more homes on the market, the homes that look good on the web have a distinct advantage over ones that don't.
There was a great post by Brandon Oelling over at Inside Lightroom called "The End is Not Near". I think Brandon's business/sales fundamentals are so important to real estate photographers that they bear repeating:
You'll find variations these fundamental rules in marketing texts of all kinds. And these are the times that force business to follow these fundamentals or perish.
It's been a long time since we've been in a down cycle like this. 1989 and 1990 was probably the last one. Good marketing techniques are especially important in these down cycles.