diff --git a/src/array/growable/dictionary.rs b/src/array/growable/dictionary.rs
index 0b3c432525a..930f4268f28 100644
--- a/src/array/growable/dictionary.rs
+++ b/src/array/growable/dictionary.rs
@@ -88,11 +88,22 @@ impl<'a, T: DictionaryKey> GrowableDictionary<'a, T> {
         let validity = std::mem::take(&mut self.key_validity);
         let key_values = std::mem::take(&mut self.key_values);
 
+        #[cfg(debug_assertions)]
+        {
+            crate::array::specification::check_indexes(&key_values, self.values.len()).unwrap();
+        }
         let keys =
-            PrimitiveArray::<T>::try_new(T::PRIMITIVE.into(), key_values.into(), validity.into())
-                .unwrap();
-
-        DictionaryArray::<T>::try_new(self.data_type.clone(), keys, self.values.clone()).unwrap()
+            PrimitiveArray::<T>::new(T::PRIMITIVE.into(), key_values.into(), validity.into());
+
+        // Safety - the invariant of this struct ensures that this is up-held
+        unsafe {
+            DictionaryArray::<T>::try_new_unchecked(
+                self.data_type.clone(),
+                keys,
+                self.values.clone(),
+            )
+            .unwrap()
+        }
     }
 }
 
@@ -141,12 +152,7 @@ impl<'a, T: DictionaryKey> Growable<'a> for GrowableDictionary<'a, T> {
 
 impl<'a, T: DictionaryKey> From<GrowableDictionary<'a, T>> for DictionaryArray<T> {
     #[inline]
-    fn from(val: GrowableDictionary<'a, T>) -> Self {
-        let data_type = T::PRIMITIVE.into();
-        let keys =
-            PrimitiveArray::<T>::try_new(data_type, val.key_values.into(), val.key_validity.into())
-                .unwrap();
-
-        DictionaryArray::<T>::try_new(val.data_type.clone(), keys, val.values).unwrap()
+    fn from(mut val: GrowableDictionary<'a, T>) -> Self {
+        val.to()
     }
 }
diff --git a/src/array/growable/list.rs b/src/array/growable/list.rs
index 41db9ae7892..0e1e7ceb5f8 100644
--- a/src/array/growable/list.rs
+++ b/src/array/growable/list.rs
@@ -104,12 +104,20 @@ impl<'a, O: Offset> GrowableList<'a, O> {
         let offsets = std::mem::take(&mut self.offsets);
         let values = self.values.as_box();
 
-        ListArray::<O>::new(
-            self.arrays[0].data_type().clone(),
-            offsets.into(),
-            values,
-            validity.into(),
-        )
+        #[cfg(debug_assertions)]
+        {
+            crate::array::specification::try_check_offsets(&offsets, values.len()).unwrap();
+        }
+
+        // Safety - the invariant of this struct ensures that this is up-held
+        unsafe {
+            ListArray::<O>::new_unchecked(
+                self.arrays[0].data_type().clone(),
+                offsets.into(),
+                values,
+                validity.into(),
+            )
+        }
     }
 }
 
@@ -135,15 +143,7 @@ impl<'a, O: Offset> Growable<'a> for GrowableList<'a, O> {
 }
 
 impl<'a, O: Offset> From<GrowableList<'a, O>> for ListArray<O> {
-    fn from(val: GrowableList<'a, O>) -> Self {
-        let mut values = val.values;
-        let values = values.as_box();
-
-        ListArray::<O>::new(
-            val.arrays[0].data_type().clone(),
-            val.offsets.into(),
-            values,
-            val.validity.into(),
-        )
+    fn from(mut val: GrowableList<'a, O>) -> Self {
+        val.to()
     }
 }
diff --git a/src/array/growable/utf8.rs b/src/array/growable/utf8.rs
index c50c6fd4dbc..adfdba2cd53 100644
--- a/src/array/growable/utf8.rs
+++ b/src/array/growable/utf8.rs
@@ -55,13 +55,19 @@ impl<'a, O: Offset> GrowableUtf8<'a, O> {
         let offsets = std::mem::take(&mut self.offsets);
         let values = std::mem::take(&mut self.values);
 
+        #[cfg(debug_assertions)]
+        {
+            crate::array::specification::try_check_offsets_and_utf8(&offsets, &values).unwrap();
+        }
+
         unsafe {
-            Utf8Array::<O>::from_data_unchecked(
+            Utf8Array::<O>::try_new_unchecked(
                 self.arrays[0].data_type().clone(),
                 offsets.into(),
                 values.into(),
                 validity.into(),
             )
+            .unwrap()
         }
     }
 }
@@ -99,14 +105,7 @@ impl<'a, O: Offset> Growable<'a> for GrowableUtf8<'a, O> {
 }
 
 impl<'a, O: Offset> From<GrowableUtf8<'a, O>> for Utf8Array<O> {
-    fn from(val: GrowableUtf8<'a, O>) -> Self {
-        unsafe {
-            Utf8Array::<O>::from_data_unchecked(
-                val.arrays[0].data_type().clone(),
-                val.offsets.into(),
-                val.values.into(),
-                val.validity.into(),
-            )
-        }
+    fn from(mut val: GrowableUtf8<'a, O>) -> Self {
+        val.to()
     }
 }