What engine is there for a site for the sale of real estate (ads)

Question

Frameworks

There are ready-made solutions like this site: elitka.kg
And what engine does this site use?

Answer 1

there is a cost of 40,000 rubles

Answer 2

This is not a ready made solution. This is one of the sites for placing your ads, of which the darkness (mlsn.ru, avito.ru, etc.). There is also no engine here as such, because the site was written from scratch for a specific task. If you only plan to post your ads, then there are likely to be 3-5 sites already in your target city.
There are extensions for Joomla , but they almost all cost money.