All the shortcodes are registered in wp-content\plugins\wpresidence-core\shortcodes\shortcodes_install.php

In function wpestate_register_button() we add the shortcode buttons to the WordPress visual editor while in wpestate_register_shortcodes() function we register the actual short code and attach it to a function.

The shortocdes are added to visual composer interface via vc_map instruction around line 115.

if( function_exists('vc_map') ):
vc_map(

All the shortcode functions(that are defined in wpestate_register_shortcodes functions ) are in this file wp-content\plugins\wpresidence-core\shortcodes\shortcodes.php