diff --git a/apps/api/src/services/contribuyente-facturapi.service.ts b/apps/api/src/services/contribuyente-facturapi.service.ts
index 49fc197..a9b6f34 100644
--- a/apps/api/src/services/contribuyente-facturapi.service.ts
+++ b/apps/api/src/services/contribuyente-facturapi.service.ts
@@ -443,6 +443,7 @@ export async function createInvoiceContribuyente(
           ...(t.withholding ? { withholding: true } : {}),
         })) || [{ type: 'IVA', rate: 0.16 }],
       },
+      ...(data.cuentaPredial ? { property_tax_account: data.cuentaPredial } : {}),
     }));
   }
 
diff --git a/apps/api/src/services/facturapi.service.ts b/apps/api/src/services/facturapi.service.ts
index 4fc7f3e..205dce1 100644
--- a/apps/api/src/services/facturapi.service.ts
+++ b/apps/api/src/services/facturapi.service.ts
@@ -323,6 +323,7 @@ export async function createInvoice(
           ...(t.withholding ? { withholding: true } : {}),
         })) || [{ type: 'IVA', rate: 0.16 }],
       },
+      ...((data as any).cuentaPredial ? { property_tax_account: (data as any).cuentaPredial } : {}),
     }));
   }
 
diff --git a/apps/web/app/(dashboard)/facturacion/page.tsx b/apps/web/app/(dashboard)/facturacion/page.tsx
index 8371e8c..f55fbcf 100644
--- a/apps/web/app/(dashboard)/facturacion/page.tsx
+++ b/apps/web/app/(dashboard)/facturacion/page.tsx
@@ -303,6 +303,7 @@ export default function FacturacionPage() {
   const [serie, setSerie] = useState('');
   const [folio, setFolio] = useState('');
   const [condiciones, setCondiciones] = useState('');
+  const [cuentaPredial, setCuentaPredial] = useState('');
   const [fechaEmision, setFechaEmision] = useState(() => {
     const d = new Date();
     d.setHours(12, 0, 0, 0);
@@ -349,6 +350,7 @@ export default function FacturacionPage() {
     setSerie('');
     setFolio('');
     setCondiciones('');
+    setCuentaPredial('');
     setConceptos([{ ...emptyConcepto, unitKey: defaultUnit }]);
     setRelatedUuid('');
     setRelatedRelationship('01');
@@ -658,6 +660,7 @@ export default function FacturacionPage() {
     if (serie) data.series = serie;
     if (folio) data.folioNumber = parseInt(folio) || undefined;
     if (condiciones) data.conditions = condiciones;
+    if (cuentaPredial) data.cuentaPredial = cuentaPredial;
 
     // Validar fecha de emisión para I, E, T
     if (tipoComprobante !== 'P' && fechaEmision) {
@@ -1345,6 +1348,30 @@ export default function FacturacionPage() {
             </Card>
           )}
 
+          {/* Cuenta Predial — solo régimen 606 (Arrendamiento) */}
+          {emisorRegimen === '606' && config.needsConceptos && (
+            <Card>
+              <CardHeader>
+                <CardTitle className="text-base">Datos del Inmueble</CardTitle>
+                <CardDescription>Obligatorio para arrendamiento (SAT)</CardDescription>
+              </CardHeader>
+              <CardContent>
+                <div className="space-y-2">
+                  <Label>No. Cuenta Predial</Label>
+                  <Input
+                    value={cuentaPredial}
+                    onChange={e => setCuentaPredial(e.target.value.replace(/[^0-9a-zA-Z]/g, '').toUpperCase())}
+                    placeholder="Ej. 15956011002"
+                    maxLength={150}
+                  />
+                  <p className="text-xs text-muted-foreground">
+                    Número de cuenta predial del inmueble arrendado. Si contiene letras o guiones, sustitúyalos por "0".
+                  </p>
+                </div>
+              </CardContent>
+            </Card>
+          )}
+
           {/* Conceptos (Ingreso, Egreso, Traslado) */}
           {config.needsConceptos && (
             <Card>
diff --git a/apps/web/lib/api/facturacion.ts b/apps/web/lib/api/facturacion.ts
index a623544..51e71cf 100644
--- a/apps/web/lib/api/facturacion.ts
+++ b/apps/web/lib/api/facturacion.ts
@@ -70,6 +70,7 @@ export interface InvoiceData {
   folioNumber?: number;
   conditions?: string;
   fechaEmision?: string;
+  cuentaPredial?: string;
 }
 
 export interface InvoiceResult {