How do you convert personal property to real property?

Real property is land, anything attached to it and any rights that are appurtenant.
Personal property is anything you own other than real property and is divided into two categories: tangible and intangible.

Tangible personal property is something you can touch and is movable. Intangible personal property is property that has no physical existence. Examples are: stocks, bonds, bank notes, trade secrets, patents, copyrights, professional reputation, goodwill and trademarks. Some "untouchable" items may be represented by a certificate or license.

If you were building a house and received a delivery of the sinks, toilets, bathtubs and heating and air conditioning equipment, all those boxes and crates stored in the unfinished dwelling would be personal property. Once it was all installed it would become part of the real property. Therefore the personal property would have been converted to real property. If you sold the home after it was completed that property could not be removed since it would be legally considered part of the real property.

The simpler answer to your question is that the way to convert personal property into real property is to sell the personal property, then use the cash to buy real property.