diff --git a/docs/changelog.txt b/docs/changelog.txt
index 2dc0bc520..c1c309b37 100644
--- a/docs/changelog.txt
+++ b/docs/changelog.txt
@@ -83,13 +83,14 @@ Template for new versions:
 - ``Units::getReadableName``: now returns the *untranslated* name
 - ``Burrows::setAssignedUnit``: now properly handles inactive burrows
 - ``Gui::getMousePos``: now takes an optional ``allow_out_of_bounds`` parameter so coordinates can be returned for mouse positions outside of the game map (i.e. in the blank space around the map)
-- Gui focus strings will now include the trap type for traps (e.g. dwarfmode/ViewSheets/BUILDING/Trap/StoneFallTrap)
+- ``Buildings::completebuild``: used to link a newly created building into the world
 
 ## Lua
 - ``dfhack.gui.revealInDwarfmodeMap``: gained ``highlight`` parameter to control setting the tile highlight on the zoom target
 - ``dfhack.maps.getWalkableGroup``: get the walkability group of a tile
 - ``dfhack.gui.getMousePos``: support new optional ``allow_out_of_bounds`` parameter
 - ``gui.FRAME_THIN``: a panel frame suitable for floating tooltips
+- ``dfhack.buildings.completebuild``: expose new module API
 
 ## Removed
 
diff --git a/library/LuaApi.cpp b/library/LuaApi.cpp
index a8e901a6d..93291592d 100644
--- a/library/LuaApi.cpp
+++ b/library/LuaApi.cpp
@@ -2440,6 +2440,7 @@ static const LuaWrapper::FunctionReg dfhack_buildings_module[] = {
     WRAPM(Buildings, isPenPasture),
     WRAPM(Buildings, isPitPond),
     WRAPM(Buildings, isActive),
+    WRAPM(Buildings, completebuild),
     { NULL, NULL }
 };
 
diff --git a/library/include/modules/Buildings.h b/library/include/modules/Buildings.h
index 22dbb0370..6fbe0d6e1 100644
--- a/library/include/modules/Buildings.h
+++ b/library/include/modules/Buildings.h
@@ -289,5 +289,10 @@ DFHACK_EXPORT df::building* findPenPitAt(df::coord coord);
  * Returns the units currently in the given cage
  */
 DFHACK_EXPORT bool getCageOccupants(df::building_cagest *cage, std::vector<df::unit*> &units);
+
+/**
+ * Finalizes a new building into the world
+ */
+DFHACK_EXPORT void completebuild(df::building* bld, char in_play);
 }
 }
diff --git a/library/modules/Buildings.cpp b/library/modules/Buildings.cpp
index 78c7b00ed..5bb1a55c1 100644
--- a/library/modules/Buildings.cpp
+++ b/library/modules/Buildings.cpp
@@ -1707,3 +1707,15 @@ bool Buildings::getCageOccupants(df::building_cagest *cage, vector<df::unit*> &u
 
     return true;
 }
+
+void Buildings::completebuild(df::building* bld, char in_play)
+{
+    CHECK_NULL_POINTER(bld);
+
+    auto fp = df::global::buildingst_completebuild;
+    CHECK_NULL_POINTER(fp);
+
+    using FT = std::function<void(df::building* bld, char)>;
+    auto f = reinterpret_cast<FT*>(fp);
+    (*f)(bld, in_play);
+}