Ezekiel, the site was unavailable at the time of my response, so I created a json.php file to serve as a test and pasted your json that you wrote in the comment on it. I removed the questions (??) from json's medium so as not to give error. I called in your function and it worked fine.
Output example:
Scheduled Surveys
16524 2017-02-06
Type: Exit Property Type: Residential
Here is the code used to test:
json.php
[{"id":"1","dataVistoriaAgenda":"2017-02-06","dataVistoria":"0000-00-00 00:00:00","endereco":"Rua São Rafael, 34","tipoImovel":"Residencial","comentarios":"","tipoVistoria":"Saída","status":"Pendente","codImovel":"16524"}]
index.php
<!DOCTYPE html>
<html>
<head>
<title>Teste Carrega Agendamento</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script><script>functioncarregaAgendamento(){//varurl="http://prestoexpress.com.br/vistoria/json.php"; // Site indisponível no momento
var url='json.php'; // com json fake informado no comentário pra ver rodando
// Apenas removi umas "??" para não dar erro
$.getJSON(url, function(result)
{
console.log(result);
$.each(result, function(i, field)
{
var id = field.id;
var dataVistoriaAgenda = field.dataVistoriaAgenda;
var tipoImovel = field.tipoImovel;
var tipoVistoria = field.tipoVistoria;
var codImovel = field.codImovel;
$("#vistoria-agenda").append('<li><a href="#"><h2>' + codImovel + ' ' + dataVistoriaAgenda + '</h2><p>' +
' Tipo: ' + tipoVistoria + '<br>'+
' Tipo Imóvel: ' + tipoImovel + '</p></a></li>');
});
});
};
window.onload=carregaAgendamento;
</script>
</head>
<body>
<p>Vistorias Agendadas</p>
<ul id="vistoria-agenda" data-role="listview" data-inset="true">
</ul>
</body>
</html>