You've got the normal big challenge of creating a two sided marketplace - search for that term and you'll find any number of posts and podcasts talking about that. That is going to be hard to overcome.
I think that sites should take you directly in to the data - don't force people to read some generic page of benefits - show don't tell. Put all that guff on an "about" page.
If you are going to make your age a selling point, then drop visitors straight into the data browsing page, make sure there are some houses there - and put a picture of you up top and say hello and point out you are 77 years old and you wrote this. It's something unique, so why not?
Also you should fill your database with houses - use AI or some sort of random data generator to generate them and just make sure there's a small but clear note on the listing saying this is AI data. It's not ideal but it is better than an empty database. Give people something to look at.
Great work though.
What is it built with? Who wrote it? You?