Its really big decision to adopt ERP software for your real estate firm, and also a really tedious task. There is so many ERP software available in the market that you get confused that which one will the best suitable for your firm. It gets more complex if you do with yourself because there are things which we need to be aware before adopting any ERP software.
You directly cannot ask the vendor for requirements because every one of them will try to sell their product at any cost. All you can do is get a consultant or a platform which can help you to choose the right software as per your requirements. Here I know a platform in India called SoftwareSuggest, guys here help you to get the best ERP software for your real estate frim free of cost.
I hope its helps you