diff --git a/Makefile b/Makefile
index 22c79880a32..4c2e6a04dc0 100644
--- a/Makefile
+++ b/Makefile
@@ -275,7 +275,7 @@ define PARSE_KEYMAP
     # Specify the variables that we are passing forward to submake
     MAKE_VARS := KEYBOARD=$$(CURRENT_KB) KEYMAP=$$(CURRENT_KM) REQUIRE_PLATFORM_KEY=$$(REQUIRE_PLATFORM_KEY) QMK_BIN=$$(QMK_BIN)
     # And the first part of the make command
-    MAKE_CMD := $$(MAKE) -r -R -C $(ROOT_DIR) -f build_keyboard.mk $$(MAKE_TARGET)
+    MAKE_CMD := $$(MAKE) -r -R -C $(ROOT_DIR) -f $(BUILDDEFS_PATH)/build_keyboard.mk $$(MAKE_TARGET)
     # The message to display
     MAKE_MSG := $$(MSG_MAKE_KB)
     # We run the command differently, depending on if we want more output or not
@@ -317,7 +317,7 @@ define BUILD_TEST
     TEST_NAME := $$(notdir $$(TEST_PATH))
     MAKE_TARGET := $2
     COMMAND := $1
-    MAKE_CMD := $$(MAKE) -r -R -C $(ROOT_DIR) -f build_test.mk $$(MAKE_TARGET)
+    MAKE_CMD := $$(MAKE) -r -R -C $(ROOT_DIR) -f $(BUILDDEFS_PATH)/build_test.mk $$(MAKE_TARGET)
     MAKE_VARS := TEST=$$(TEST_NAME) TEST_PATH=$$(TEST_PATH) FULL_TESTS="$$(FULL_TESTS)"
     MAKE_MSG := $$(MSG_MAKE_TEST)
     $$(eval $$(call BUILD))
@@ -339,7 +339,7 @@ define PARSE_TEST
     TESTS :=
     TEST_NAME := $$(firstword $$(subst :, ,$$(RULE)))
     TEST_TARGET := $$(subst $$(TEST_NAME),,$$(subst $$(TEST_NAME):,,$$(RULE)))
-    include $(ROOT_DIR)/testlist.mk
+    include $(BUILDDEFS_PATH)/testlist.mk
     ifeq ($$(TEST_NAME),all)
         MATCHED_TESTS := $$(TEST_LIST)
     else
diff --git a/build_full_test.mk b/builddefs/build_full_test.mk
similarity index 100%
rename from build_full_test.mk
rename to builddefs/build_full_test.mk
diff --git a/build_json.mk b/builddefs/build_json.mk
similarity index 100%
rename from build_json.mk
rename to builddefs/build_json.mk
diff --git a/build_keyboard.mk b/builddefs/build_keyboard.mk
similarity index 98%
rename from build_keyboard.mk
rename to builddefs/build_keyboard.mk
index f727760465e..d5efcb4193a 100644
--- a/build_keyboard.mk
+++ b/builddefs/build_keyboard.mk
@@ -111,7 +111,7 @@ INFO_RULES_MK = $(shell $(QMK_BIN) generate-rules-mk --quiet --escape --keyboard
 include $(INFO_RULES_MK)
 
 # Check for keymap.json first, so we can regenerate keymap.c
-include build_json.mk
+include $(BUILDDEFS_PATH)/build_json.mk
 
 # Pull in keymap level rules.mk
 ifeq ("$(wildcard $(KEYMAP_PATH))", "")
@@ -138,7 +138,7 @@ ifeq ("$(wildcard $(KEYMAP_PATH))", "")
         KEYMAP_PATH := $(MAIN_KEYMAP_PATH_1)
     else ifneq ($(LAYOUTS),)
         # If we haven't found a keymap yet fall back to community layouts
-        include build_layout.mk
+        include $(BUILDDEFS_PATH)/build_layout.mk
     else
         $(call CATASTROPHIC_ERROR,Invalid keymap,Could not find keymap)
         # this state should never be reached
@@ -398,7 +398,7 @@ VPATH += $(COMMON_VPATH)
 VPATH += $(KEYBOARD_OUTPUT)/src
 VPATH += $(KEYMAP_OUTPUT)/src
 
-include common_features.mk
+include $(BUILDDEFS_PATH)/common_features.mk
 include $(BUILDDEFS_PATH)/generic_features.mk
 include $(TMK_PATH)/protocol.mk
 include $(PLATFORM_PATH)/common.mk
@@ -460,7 +460,7 @@ check-md5: build
 objs-size: build
 
 include $(BUILDDEFS_PATH)/show_options.mk
-include $(TMK_PATH)/rules.mk
+include $(BUILDDEFS_PATH)/common_rules.mk
 
 # Ensure we have generated files available for each of the objects
 define GEN_FILES
diff --git a/build_layout.mk b/builddefs/build_layout.mk
similarity index 100%
rename from build_layout.mk
rename to builddefs/build_layout.mk
diff --git a/build_test.mk b/builddefs/build_test.mk
similarity index 93%
rename from build_test.mk
rename to builddefs/build_test.mk
index ec6699b4ea6..7226004aabc 100644
--- a/build_test.mk
+++ b/builddefs/build_test.mk
@@ -54,7 +54,7 @@ include tests/test_common/build.mk
 include $(TEST_PATH)/test.mk
 endif
 
-include common_features.mk
+include $(BUILDDEFS_PATH)/common_features.mk
 include $(BUILDDEFS_PATH)/generic_features.mk
 include $(PLATFORM_PATH)/common.mk
 include $(TMK_PATH)/protocol.mk
@@ -63,7 +63,7 @@ include $(QUANTUM_PATH)/encoder/tests/rules.mk
 include $(QUANTUM_PATH)/sequencer/tests/rules.mk
 include $(PLATFORM_PATH)/test/rules.mk
 ifneq ($(filter $(FULL_TESTS),$(TEST)),)
-include build_full_test.mk
+include $(BUILDDEFS_PATH)/build_full_test.mk
 endif
 
 $(TEST)_SRC += \
@@ -77,7 +77,7 @@ $(TEST_OBJ)/$(TEST)_DEFS := $($(TEST)_DEFS)
 $(TEST_OBJ)/$(TEST)_CONFIG := $($(TEST)_CONFIG)
 
 include $(PLATFORM_PATH)/$(PLATFORM_KEY)/platform.mk
-include $(TMK_PATH)/rules.mk
+include $(BUILDDEFS_PATH)/common_rules.mk
 
 
 $(shell mkdir -p $(BUILD_DIR)/test 2>/dev/null)
diff --git a/common_features.mk b/builddefs/common_features.mk
similarity index 100%
rename from common_features.mk
rename to builddefs/common_features.mk
diff --git a/tmk_core/rules.mk b/builddefs/common_rules.mk
similarity index 100%
rename from tmk_core/rules.mk
rename to builddefs/common_rules.mk
diff --git a/testlist.mk b/builddefs/testlist.mk
similarity index 100%
rename from testlist.mk
rename to builddefs/testlist.mk
diff --git a/lib/python/qmk/cli/multibuild.py b/lib/python/qmk/cli/multibuild.py
index ad059edff38..dff8c884221 100755
--- a/lib/python/qmk/cli/multibuild.py
+++ b/lib/python/qmk/cli/multibuild.py
@@ -69,7 +69,7 @@ def multibuild(cli):
 all: {keyboard_safe}_binary
 {keyboard_safe}_binary:
 	@rm -f "{QMK_FIRMWARE}/.build/failed.log.{keyboard_safe}" || true
-	+@$(MAKE) -C "{QMK_FIRMWARE}" -f "{QMK_FIRMWARE}/build_keyboard.mk" KEYBOARD="{keyboard_name}" KEYMAP="{cli.args.keymap}" REQUIRE_PLATFORM_KEY= COLOR=true SILENT=false {' '.join(cli.args.env)} \\
+	+@$(MAKE) -C "{QMK_FIRMWARE}" -f "{QMK_FIRMWARE}/builddefs/build_keyboard.mk" KEYBOARD="{keyboard_name}" KEYMAP="{cli.args.keymap}" REQUIRE_PLATFORM_KEY= COLOR=true SILENT=false {' '.join(cli.args.env)} \\
 		>>"{QMK_FIRMWARE}/.build/build.log.{os.getpid()}.{keyboard_safe}" 2>&1 \\
 		|| cp "{QMK_FIRMWARE}/.build/build.log.{os.getpid()}.{keyboard_safe}" "{QMK_FIRMWARE}/.build/failed.log.{os.getpid()}.{keyboard_safe}"
 	@{{ grep '\[ERRORS\]' "{QMK_FIRMWARE}/.build/build.log.{os.getpid()}.{keyboard_safe}" >/dev/null 2>&1 && printf "Build %-64s \e[1;31m[ERRORS]\e[0m\\n" "{keyboard_name}:{cli.args.keymap}" ; }} \\
diff --git a/lib/python/qmk/commands.py b/lib/python/qmk/commands.py
index 90a68ca3cd4..275cd72e5cd 100644
--- a/lib/python/qmk/commands.py
+++ b/lib/python/qmk/commands.py
@@ -213,7 +213,7 @@ def compile_configurator_json(user_keymap, bootloader=None, parallel=1, **env_va
         '-r',
         '-R',
         '-f',
-        'build_keyboard.mk',
+        'builddefs/build_keyboard.mk',
     ])
 
     if bootloader:
diff --git a/paths.mk b/paths.mk
index 5a39d00ecd7..85ccfa07964 100644
--- a/paths.mk
+++ b/paths.mk
@@ -2,7 +2,9 @@
 TOP_DIR = .
 TMK_DIR = tmk_core
 TMK_PATH = $(TMK_DIR)
-LIB_PATH = lib
+
+LIB_DIR = lib
+LIB_PATH = $(LIB_DIR)
 
 QUANTUM_DIR = quantum
 QUANTUM_PATH = $(QUANTUM_DIR)