How do you figure ARV without MLS Access?

[Cody Williams]

Hey BiggerPockets,
I've been researching for my first real estate investment and one thing I'm struggling with is figuring out the ARV on a home. I understand that you want to find the comps in the area and you want to take the average based on the closest proximity to your home and style. Is there a way to find out this information without MLS access? Are there websites/apps suggested for finding comps on a house?
I currently have a real estate agent, but I don't want to bother her for comps on every house I'm running an analysis on. Any suggestions on how to do this? 

Thanks!

[Ayne C.]

@Cody Williams I look at sold data on Zillow for that zipcode Same number of bedrooms and bathrooms sqft plus minus 200 Then look at the pictures for an idea of rehab status Try to get comps from the last 6-12 months