Need help with rental portal

So I have been contracted by a company that wants to redesign their webpage, I thought it would be a visual job, but now they have told me that they want to implement a system like booking, where there is a private user area for clients that want to publish their own houses or rooms (atm their web page is a long list of rentals in different places, but there is no such system, and when I first spoke to them they said that they had an administrative to manage the properties).

Im so lost in the process at this point, and I have no idea what kind of services I should be looking for, or maybe a plugin for that?. Can anyone help me a little?

Thanks a lot!

• This topic was modified 4 years, 9 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Everything else WordPress topic