diff --git a/utils/check_api_reference.py b/utils/check_api_reference.py
index 42672a617..7bc590423 100644
--- a/utils/check_api_reference.py
+++ b/utils/check_api_reference.py
@@ -121,71 +121,30 @@
     print(extra)  # noqa: T201
     ret = 1
 
-# Series.cat methods
-series_cat_methods = [
-    i
-    for i in nw.from_native(pl.Series(), series_only=True).cat.__dir__()
-    if not i[0].isupper() and i[0] != "_"
-]
-with open("docs/api-reference/series_cat.md") as fd:
-    content = fd.read()
-documented = [
-    remove_prefix(i, "        - ")
-    for i in content.splitlines()
-    if i.startswith("        - ") and not i.startswith("        - _")
-]
-if missing := set(series_cat_methods).difference(documented):
-    print("Series.cat: not documented")  # noqa: T201
-    print(missing)  # noqa: T201
-    ret = 1
-if extra := set(documented).difference(series_cat_methods):
-    print("Series.cat: outdated")  # noqa: T201
-    print(extra)  # noqa: T201
-    ret = 1
-
-# Series.dt methods
-series_dt_methods = [
-    i
-    for i in nw.from_native(pl.Series(), series_only=True).dt.__dir__()
-    if not i[0].isupper() and i[0] != "_"
-]
-with open("docs/api-reference/series_dt.md") as fd:
-    content = fd.read()
-documented = [
-    remove_prefix(i, "        - ")
-    for i in content.splitlines()
-    if i.startswith("        - ") and not i.startswith("        - _")
-]
-if missing := set(series_dt_methods).difference(documented):
-    print("Series.dt: not documented")  # noqa: T201
-    print(missing)  # noqa: T201
-    ret = 1
-if extra := set(documented).difference(series_dt_methods):
-    print("Series.dt: outdated")  # noqa: T201
-    print(extra)  # noqa: T201
-    ret = 1
-
-# Series.str methods
-series_str_methods = [
-    i
-    for i in nw.from_native(pl.Series(), series_only=True).str.__dir__()
-    if not i[0].isupper() and i[0] != "_"
-]
-with open("docs/api-reference/series_str.md") as fd:
-    content = fd.read()
-documented = [
-    remove_prefix(i, "        - ")
-    for i in content.splitlines()
-    if i.startswith("        - ") and not i.startswith("        - _")
-]
-if missing := set(series_str_methods).difference(documented):
-    print("Series.str: not documented")  # noqa: T201
-    print(missing)  # noqa: T201
-    ret = 1
-if extra := set(documented).difference(series_str_methods):
-    print("Series.str: outdated")  # noqa: T201
-    print(extra)  # noqa: T201
-    ret = 1
+# Series.{cat, dt, str} methods
+for namespace in NAMESPACES.difference({"name"}):
+    series_methods = [
+        i
+        for i in getattr(
+            nw.from_native(pl.Series(), series_only=True), namespace
+        ).__dir__()
+        if not i[0].isupper() and i[0] != "_"
+    ]
+    with open(f"docs/api-reference/series_{namespace}.md") as fd:
+        content = fd.read()
+    documented = [
+        remove_prefix(i, "        - ")
+        for i in content.splitlines()
+        if i.startswith("        - ") and not i.startswith("        - _")
+    ]
+    if missing := set(series_methods).difference(documented):
+        print(f"Series.{namespace}: not documented")  # noqa: T201
+        print(missing)  # noqa: T201
+        ret = 1
+    if extra := set(documented).difference(series_methods):
+        print(f"Series.{namespace}: outdated")  # noqa: T201
+        print(extra)  # noqa: T201
+        ret = 1
 
 # Expr methods
 expr_methods = [
@@ -207,85 +166,28 @@
     print(extra)  # noqa: T201
     ret = 1
 
-# Expr.cat methods
-expr_cat_methods = [
-    i for i in nw.Expr(lambda: 0).cat.__dir__() if not i[0].isupper() and i[0] != "_"
-]
-with open("docs/api-reference/expr_cat.md") as fd:
-    content = fd.read()
-documented = [
-    remove_prefix(i, "        - ")
-    for i in content.splitlines()
-    if i.startswith("        - ")
-]
-if missing := set(expr_cat_methods).difference(documented):
-    print("Expr.cat: not documented")  # noqa: T201
-    print(missing)  # noqa: T201
-    ret = 1
-if extra := set(documented).difference(expr_cat_methods):
-    print("Expr.cat: outdated")  # noqa: T201
-    print(extra)  # noqa: T201
-    ret = 1
-
-# Expr.dt methods
-expr_dt_methods = [
-    i for i in nw.Expr(lambda: 0).dt.__dir__() if not i[0].isupper() and i[0] != "_"
-]
-with open("docs/api-reference/expr_dt.md") as fd:
-    content = fd.read()
-documented = [
-    remove_prefix(i, "        - ")
-    for i in content.splitlines()
-    if i.startswith("        - ")
-]
-if missing := set(expr_dt_methods).difference(documented):
-    print("Expr.dt: not documented")  # noqa: T201
-    print(missing)  # noqa: T201
-    ret = 1
-if extra := set(documented).difference(expr_dt_methods):
-    print("Expr.dt: outdated")  # noqa: T201
-    print(extra)  # noqa: T201
-    ret = 1
-
-# Expr.name methods
-expr_name_methods = [
-    i for i in nw.Expr(lambda: 0).name.__dir__() if not i[0].isupper() and i[0] != "_"
-]
-with open("docs/api-reference/expr_name.md") as fd:
-    content = fd.read()
-documented = [
-    remove_prefix(i, "        - ")
-    for i in content.splitlines()
-    if i.startswith("        - ")
-]
-if missing := set(expr_name_methods).difference(documented):
-    print("Expr.name: not documented")  # noqa: T201
-    print(missing)  # noqa: T201
-    ret = 1
-if extra := set(documented).difference(expr_name_methods):
-    print("Expr.name: outdated")  # noqa: T201
-    print(extra)  # noqa: T201
-    ret = 1
-
-# Expr.str methods
-expr_str_methods = [
-    i for i in nw.Expr(lambda: 0).str.__dir__() if not i[0].isupper() and i[0] != "_"
-]
-with open("docs/api-reference/expr_str.md") as fd:
-    content = fd.read()
-documented = [
-    remove_prefix(i, "        - ")
-    for i in content.splitlines()
-    if i.startswith("        - ")
-]
-if missing := set(expr_str_methods).difference(documented):
-    print("Expr.str: not documented")  # noqa: T201
-    print(missing)  # noqa: T201
-    ret = 1
-if extra := set(documented).difference(expr_str_methods):
-    print("Expr.str: outdated")  # noqa: T201
-    print(extra)  # noqa: T201
-    ret = 1
+# Expr.{cat, dt, name, str} methods
+for namespace in NAMESPACES:
+    expr_methods = [
+        i
+        for i in getattr(nw.Expr(lambda: 0), namespace).__dir__()
+        if not i[0].isupper() and i[0] != "_"
+    ]
+    with open(f"docs/api-reference/expr_{namespace}.md") as fd:
+        content = fd.read()
+    documented = [
+        remove_prefix(i, "        - ")
+        for i in content.splitlines()
+        if i.startswith("        - ")
+    ]
+    if missing := set(expr_methods).difference(documented):
+        print(f"Expr.{namespace}: not documented")  # noqa: T201
+        print(missing)  # noqa: T201
+        ret = 1
+    if extra := set(documented).difference(expr_methods):
+        print(f"Expr.{namespace}: outdated")  # noqa: T201
+        print(extra)  # noqa: T201
+        ret = 1
 
 # DTypes
 dtypes = [