If you are new:
One of the things you need to do is list the house as an asset for depreciation. The cost basis for the house is the fair market value, or your cost basis, whichever is lower at the time you started renting the house out. Land is not depreciated, so you only consider the cost or value of 10217, not the shared land it is on. If you bought this as one property, you need to allocate the cost in some reasonable way, between the land, the 10217 house, and the 10213 house. Start by taking your total cost, subtracting the value of the land, then dividing the cost of the houses. Square footage might be one reasonable way to divide the cost. There might be other reasonable ways, such as if one house has much newer improvements and upgrades, that might tilt the scales one way or the other. You might get the value of the land from the tax assessor, or you might get a market opinion from a real estate professional as to the allocation of value between the land, and the 2 houses. Keep your records or notes of how you allocated the cost, as long as you own the property, in case of audit.
Then, once you have determined an allocation method for the 10217 house as an asset, you would use the same allocation method to divide the property tax bill between your personal property and the rental property.
