Kristan from Trulia's Customer Service here. Unfortunately, this specific refined search option is not available at this time. We appreciate your interest in our company and I have forwarded your suggestion to our specialists.
As we are continually working on improvements, I encourage you to continue notifying us of ways we may improve our services to better meet your needs. Feel free to send us any further insights or inquires.
If you have additional questions, please contact us at http://www.trulia.com/help/ask/
or call Customer Service at 1-888-466-3501.