Facebook automatically uses the first 3 photos as the listing appears on Zillow.
There are two ways to change the order of the photos on Zillow:
1. Update the photos at the feed source. (Recommended)
To determine where the listing is coming from, sign in to your Zillow account, go to Agent Hub, and click Listings. Find your listing and click on the address. Make sure you are in the Public View by toggling at the top of the screen. Scroll to the bottom of the page and locate “Listing provided by”. This tells you where Zillow is getting your listing information, and therefore where you’ll need to update your photos.
2. Update the photos directly on Zillow.
Sign in to your Zillow account, go to Agent Hub, and click Listings. Find your listing and click “edit listing”. Scroll down to Photos. Under My Photos, click Inactive (this makes My Photos active and Feed Photos inactive). Upload all photos that you want on the listing, as this prevents any feed photos from coming through, and put them in the order you want. Scroll all the way to the bottom of the page and click “Update for sale by agent” to save.