diff --git a/src/app/api/live-tracking/property-documents/route.ts b/src/app/api/live-tracking/property-documents/route.ts
index 35f49915..6d5ee7f6 100644
--- a/src/app/api/live-tracking/property-documents/route.ts
+++ b/src/app/api/live-tracking/property-documents/route.ts
@@ -40,7 +40,31 @@ export async function GET(req: Request) {
       .from(uploadedFiles)
       .where(condition);
 
-    const documents = rows.map((row) => ({
+    // Deduplicate rows that arise when the ingestion Lambda re-triggers for a deal
+    // that was already processed: same S3 key gets a new version, but a new DB row
+    // is written each time.
+    //
+    // Step 1: same s3FileKey → keep the row with the highest id (latest insert).
+    const latestByS3Key = new Map<string, (typeof rows)[number]>();
+    for (const row of rows) {
+      const existing = latestByS3Key.get(row.s3FileKey);
+      if (!existing || row.id > existing.id) latestByS3Key.set(row.s3FileKey, row);
+    }
+
+    // Step 2: among distinct keys, same (fileType, measureName) → keep latest.
+    // Rows with null fileType (unclassified) are kept as-is.
+    const latestByDocType = new Map<string, (typeof rows)[number]>();
+    const unclassified: (typeof rows)[number][] = [];
+    for (const row of latestByS3Key.values()) {
+      if (!row.fileType) { unclassified.push(row); continue; }
+      const key = `${row.fileType}:${row.measureName ?? ""}`;
+      const existing = latestByDocType.get(key);
+      if (!existing || row.id > existing.id) latestByDocType.set(key, row);
+    }
+
+    const dedupedRows = [...latestByDocType.values(), ...unclassified];
+
+    const documents = dedupedRows.map((row) => ({
       id: String(row.id),
       s3FileKey: row.s3FileKey,
       s3FileBucket: row.s3FileBucket,