diff --git a/raster_loader/cli/bigquery.py b/raster_loader/cli/bigquery.py
index 1d7b83a..e200f53 100644
--- a/raster_loader/cli/bigquery.py
+++ b/raster_loader/cli/bigquery.py
@@ -37,6 +37,12 @@ def bigquery(args=None):
     default=False,
     is_flag=True,
 )
+@click.option(
+    "--append",
+    help="Append records into a table if it already exists.",
+    default=False,
+    is_flag=True,
+)
 @click.option(
     "--output_quadbin",
     help=(
@@ -56,6 +62,7 @@ def upload(
     chunk_size,
     input_crs,
     overwrite=False,
+    append=False,
     output_quadbin=False,
     test=False,
 ):
@@ -110,6 +117,7 @@ def upload(
         input_crs,
         client=client,
         overwrite=overwrite,
+        append=append,
         output_quadbin=output_quadbin,
     )
 
diff --git a/raster_loader/io.py b/raster_loader/io.py
index f9c0f53..22c1d2d 100644
--- a/raster_loader/io.py
+++ b/raster_loader/io.py
@@ -971,6 +971,7 @@ def rasterio_to_bigquery(
     input_crs: int = None,
     client=None,
     overwrite: bool = False,
+    append: bool = False,
     output_quadbin: bool = False,
     pseudo_planar: bool = False,
 ) -> bool:
@@ -1041,7 +1042,7 @@ def rasterio_to_bigquery(
             elif not check_if_bigquery_table_is_empty(
                 project_id, dataset_id, table_id, client
             ):
-                append_records = ask_yes_no_question(
+                append_records = append or ask_yes_no_question(
                     f"Table {table_id} already exists in dataset {dataset_id} "
                     "and is not empty. Append records? [yes/no] "
                 )