def grossrentalincome(netrentalincome, otherincome):
    """ Annual income from property.

    :param netrentalincome: Annual income from rent collection.
    :type netrentalincome: double
    :param otherincome: Annual income from other sources (e.g. coin-operated laundry).
    :type otherincome: double
    :return: double

    """
    return netrentalincome + otherincome