What kind of account I need to use to post a purchase of a Real Estate Investment property using owner's investment funds?

For the property, Fixed Asset. For the money, Owner Equity Contribution, which is one of the 3-4 equity accounts necessary per owner,  the others being draw and total equity

What kind of investment property?  vacant land?  rental apartments?

If the investment does not pertain somehow to the business, then it does not belong in the business books, it is a personal investment.

ie, a plumbing business would not have rental property, the rental property would be a separate business