Multi-member LLCs are treated the same as partnerships in terms of filing requirements.
You need to file a return (1065) for the LLC unless it had absolutely no income and no expenditures.
Land is not a depreciable asset so it is somewhat immaterial at this point. Obviously, your balance sheet should reflect the property as an asset, though.
Property taxes and, possibly, investment expenses and maintenance costs can be deducted provided the land is held for investment purposes.