diff --git a/code/modules/admin/buildmode/advanced.dm b/code/modules/admin/buildmode/advanced.dm
index 2f7b2b47f33..f72402356b4 100644
--- a/code/modules/admin/buildmode/advanced.dm
+++ b/code/modules/admin/buildmode/advanced.dm
@@ -3,6 +3,10 @@
 	icon_state = "buildmode2"
 	var/build_type
 
+/datum/build_mode/advanced/Destroy()
+	build_type = null
+	. = ..()
+
 /datum/build_mode/advanced/Help()
 	to_chat(user, SPAN_NOTICE("***********************************************************"))
 	to_chat(user, SPAN_NOTICE("Left Click                       = Create objects"))
diff --git a/code/modules/admin/buildmode/buildmode.dm b/code/modules/admin/buildmode/buildmode.dm
index ba774491313..4cb8f2bb429 100644
--- a/code/modules/admin/buildmode/buildmode.dm
+++ b/code/modules/admin/buildmode/buildmode.dm
@@ -14,6 +14,7 @@
 
 /datum/build_mode/Destroy()
 	host = null
+	user = null
 	. = ..()
 
 /datum/build_mode/proc/OnClick(var/atom/A, var/list/parameters)
diff --git a/code/modules/admin/buildmode/ladders.dm b/code/modules/admin/buildmode/ladders.dm
index 5bd3e11aa46..7b55537c9df 100644
--- a/code/modules/admin/buildmode/ladders.dm
+++ b/code/modules/admin/buildmode/ladders.dm
@@ -4,6 +4,11 @@
 	var/turf/ladder_upper
 	var/turf/ladder_lower
 
+/datum/build_mode/ladders/Destroy()
+	ladder_upper = null
+	ladder_lower = null
+	. = ..()
+
 /datum/build_mode/ladders/Help()
 	to_chat(user, SPAN_NOTICE("***********************************************************"))
 	to_chat(user, SPAN_NOTICE("Left Click on Turf   = Set as upper ladder loc"))
diff --git a/code/modules/admin/buildmode/room_builder.dm b/code/modules/admin/buildmode/room_builder.dm
index c4e3a5f3ade..b217ed5dfe9 100644
--- a/code/modules/admin/buildmode/room_builder.dm
+++ b/code/modules/admin/buildmode/room_builder.dm
@@ -8,6 +8,11 @@
 	var/floor_type = /turf/simulated/floor/plating
 	var/wall_type = /turf/simulated/wall
 
+/datum/build_mode/room_builder/Destroy()
+	coordinate_A = null
+	coordinate_B = null
+	. = ..()
+
 /datum/build_mode/room_builder/Help()
 	to_chat(user, SPAN_NOTICE("***********************************************************"))
 	to_chat(user, SPAN_NOTICE("Left Click on Turf               = Select as point A"))
diff --git a/html/changelogs/hellfirejag-build-mode-harddel.yml b/html/changelogs/hellfirejag-build-mode-harddel.yml
new file mode 100644
index 00000000000..c7a463e9a1b
--- /dev/null
+++ b/html/changelogs/hellfirejag-build-mode-harddel.yml
@@ -0,0 +1,4 @@
+author: Hellfirejag
+delete-after: True
+changes:
+  - bugfix: "Fixed a hard delete related to build mode."