Route::get('/prop/{id_prop}/', 'PropriedadeController@clientePropriedade');
Route::get('/prop/{id_prop}/cap/{id_cap}/', 'CaptacaoController@clienteCaptacao')->name('cap');
Route::get('/prop/{id_prop}/cap/{id_cap}/sis/{id_sis}/', 'SistemaController@clienteSistema')->name('sis');

public function clienteCaptacao(int $id)
 {
    dd($id);//valor 1
    $cap = Captacao::find($id);

    //dd($cap);
    if (!isset($cap)) {
        return view('erros.cliente.nCadastrado',
            array('nome' => 'captações'));
    } else {
        return view('cliente.escolheSistema', compact('cap'));
    }
 }

<div class="col-lg-3 col-md-6">
    <a href=http://h20.laravel/cliente/prop/1/cap/1
        class="btn  btn-secondary btn-block" style="background-color:red">Captacao 1</a>
 </div>
 <div class="col-lg-3 col-md-6">
    <a href=http://h20.laravel/cliente/prop/1/cap/2
        class="btn  btn-secondary btn-block" style="background-color:red">Captacao 2</a>
 </div>
 <div class="col-lg-3 col-md-6">
    <a href=http://h20.laravel/cliente/prop/1/cap/3
        class="btn  btn-secondary btn-block" style="background-color:red">Captacao 3</a>
 </div>