Does PropertyMe offer a REST API? That’s the only way you would be able to communicate between an external app and Airtable.
If the answer is yes, then you would need to write your own custom programming code to tap into that REST API by using one of 3 methods:
1. High-code: Writing your own custom Javascript scripts in Airtable.
2. Medium-code: Using DataFetcher.com
3. Low-code: Using Make’s HTTP Module. There is a small learning curve with Make, which is why I created this basic navigation video to help.