diff --git a/src/routes/settings.import.tsx b/src/routes/settings.import.tsx
index 1a64ae2..00d1060 100644
--- a/src/routes/settings.import.tsx
+++ b/src/routes/settings.import.tsx
@@ -766,7 +766,19 @@ function ImportPage() {
                     </CardTitle>
                     <p className="text-xs text-muted-foreground mt-1">{cfg.description}</p>
                   </div>
-                  <div className="shrink-0">
+                  <div className="shrink-0 flex items-center gap-2">
+                    {cfg.key === "locations" && (
+                      <Select value={defaultClientId} onValueChange={setDefaultClientId}>
+                        <SelectTrigger className="h-8 w-[220px] text-xs">
+                          <SelectValue placeholder="Assign all rows to client…" />
+                        </SelectTrigger>
+                        <SelectContent>
+                          {clientList.map((c) => (
+                            <SelectItem key={c.id} value={c.id}>{c.name}</SelectItem>
+                          ))}
+                        </SelectContent>
+                      </Select>
+                    )}
                     <input
                       type="file"
                       accept=".csv,text/csv"
@@ -777,9 +789,9 @@ function ImportPage() {
                         if (f) handleFile(cfg, f);
                         e.target.value = "";
                       }}
-                      disabled={running}
+                      disabled={running || (cfg.key === "locations" && !defaultClientId)}
                     />
-                    <Button asChild size="sm" variant="outline" disabled={running}>
+                    <Button asChild size="sm" variant="outline" disabled={running || (cfg.key === "locations" && !defaultClientId)}>
                       <label htmlFor={`file-${cfg.key}`} className="cursor-pointer">
                         {running ? <Loader2 className="h-3.5 w-3.5 mr-1.5 animate-spin" /> : <Upload className="h-3.5 w-3.5 mr-1.5" />}
                         {running ? "Importing…" : "Upload CSV"}