How do I get a customized real estate listings feed into my website?

Site URL: https://seal-olive-mnwz.squarespace.com/config/pages

 I've got an iFrame code plugged in currently but can't customize the look or functionality, so hoping to find help on how to create my own. Is there someone out there that can help guide me through this customization? 

22 minutes ago, bellef22 said:

Site URL: https://seal-olive-mnwz.squarespace.com/config/pages

 I've got an iFrame code plugged in currently but can't customize the look or functionality, so hoping to find help on how to create my own. Is there someone out there that can help guide me through this customization? 

Does your feed support api?

12 hours ago, bangank36 said:

Does your feed support api?

I'm not sure... how do I figure that out?