My uncle passed away and his property is now in my possession is there any way that that will make it mine without a will

If the deed was from your uncle to you, the property is yours.  Make sure that the deed is recorded with the county clerk. When someone dies without a Will, their property passes according to the state's inheritance laws.  Your uncle's children would inherit, not you. You may have a claim agains the estate for the services which you provided but only if there was a signed agreement specifying the services and the rate of pay.