First I use Zip (I don’t think they put the condos in.) I like their larger photos. Then I cross reference using the mls# with Redfin to get a more complete listing. I also cross ref with Realtor.com (they don’t list address-annoying) but have a little more info. I also use SDlook up. Then I always go to Zillow to get a good birdseye view, lot boundaries, etc. Each has its advantages and disadvantages. They are all in my favorites so it is quick. I like SDlookup’s feature, Today’s changes. Then, if I am really interested I always google earth to get the topography and see the surrounding areas.