--- a/src/newgrf_object.h
+++ b/src/newgrf_object.h
@@ -12,9 +12,11 @@
 #ifndef NEWGRF_OBJECT_H
 #define NEWGRF_OBJECT_H
 
+#include "date_type.h"
 #include "economy_func.h"
 #include "strings_type.h"
 #include "object_type.h"
+#include "newgrf_animation_type.h"
 #include "newgrf_class.h"
 #include "newgrf_commons.h"
 
@@ -55,10 +57,16 @@
 	ObjectClassID cls_id;         ///< The class to which this spec belongs.
 	StringID name;                ///< The name for this object.
 
+	uint8 climate;                ///< In which climates is this object available?
 	uint8 size;                   ///< The size of this objects; low nibble for X, high nibble for Y.
 	uint8 build_cost_multiplier;  ///< Build cost multiplier per tile.
 	uint8 clear_cost_multiplier;  ///< Clear cost multiplier per tile.
+	Date introduction_date;       ///< From when can this object be built.
+	Date end_of_life_date;        ///< When can't this object be built anymore.
 	ObjectFlags flags;            ///< Flags/settings related to the object.
+	AnimationInfo animation;      ///< Information about the animation.
+	uint16 callback_mask;         ///< Bitmask of requested/allowed callbacks.
+	uint8 height;                 ///< The height of this structure, in heightlevels; max MAX_TILE_HEIGHT.
 	bool enabled;                 ///< Is this spec enabled?
 
 	/**

--- a/src/table/object_land.h
+++ b/src/table/object_land.h
@@ -123,15 +123,15 @@
 
 #undef TILE_SPRITE_LINE
 
-#define M(name, size, build_cost_multiplier, clear_cost_multiplier, flags) { GRFFilePropsBase<2>(), INVALID_OBJECT_CLASS, name, size, build_cost_multiplier, clear_cost_multiplier, flags, true }
+#define M(name, size, build_cost_multiplier, clear_cost_multiplier, height, flags) { GRFFilePropsBase<2>(), INVALID_OBJECT_CLASS, name, 0xF, size, 0, 0, build_cost_multiplier, clear_cost_multiplier, flags, {0, 0, 0, 0}, 0, height, true }
 
 /** Specification of the original object structures. */
 extern const ObjectSpec _original_objects[] = {
-	M(STR_LAI_OBJECT_DESCRIPTION_TRANSMITTER,          0x11,   0,   0, OBJECT_FLAG_CANNOT_REMOVE | OBJECT_FLAG_ONLY_IN_SCENEDIT),
-	M(STR_LAI_OBJECT_DESCRIPTION_LIGHTHOUSE,           0x11,   0,   0, OBJECT_FLAG_CANNOT_REMOVE | OBJECT_FLAG_ONLY_IN_SCENEDIT),
-	M(STR_TOWN_BUILDING_NAME_STATUE_1,                 0x11,   0,   0, OBJECT_FLAG_CANNOT_REMOVE | OBJECT_FLAG_ONLY_IN_GAME | OBJECT_FLAG_ONLY_IN_SCENEDIT), // Yes, we disallow building this everywhere. Happens in "special" case!
-	M(STR_LAI_OBJECT_DESCRIPTION_COMPANY_OWNED_LAND,   0x11,  10,   2, OBJECT_FLAG_AUTOREMOVE | OBJECT_FLAG_ONLY_IN_GAME | OBJECT_FLAG_CLEAR_INCOME | OBJECT_FLAG_HAS_NO_FOUNDATION | OBJECT_FLAG_ALLOW_UNDER_BRIDGE),
-	M(STR_LAI_OBJECT_DESCRIPTION_COMPANY_HEADQUARTERS, 0x22,   0,   0, OBJECT_FLAG_CANNOT_REMOVE | OBJECT_FLAG_ONLY_IN_GAME),
+	M(STR_LAI_OBJECT_DESCRIPTION_TRANSMITTER,          0x11,   0,   0, 10, OBJECT_FLAG_CANNOT_REMOVE | OBJECT_FLAG_ONLY_IN_SCENEDIT),
+	M(STR_LAI_OBJECT_DESCRIPTION_LIGHTHOUSE,           0x11,   0,   0,  8, OBJECT_FLAG_CANNOT_REMOVE | OBJECT_FLAG_ONLY_IN_SCENEDIT),
+	M(STR_TOWN_BUILDING_NAME_STATUE_1,                 0x11,   0,   0,  5, OBJECT_FLAG_CANNOT_REMOVE | OBJECT_FLAG_ONLY_IN_GAME | OBJECT_FLAG_ONLY_IN_SCENEDIT), // Yes, we disallow building this everywhere. Happens in "special" case!
+	M(STR_LAI_OBJECT_DESCRIPTION_COMPANY_OWNED_LAND,   0x11,  10,   2,  0, OBJECT_FLAG_AUTOREMOVE | OBJECT_FLAG_ONLY_IN_GAME | OBJECT_FLAG_CLEAR_INCOME | OBJECT_FLAG_HAS_NO_FOUNDATION | OBJECT_FLAG_ALLOW_UNDER_BRIDGE),
+	M(STR_LAI_OBJECT_DESCRIPTION_COMPANY_HEADQUARTERS, 0x22,   0,   0,  7, OBJECT_FLAG_CANNOT_REMOVE | OBJECT_FLAG_ONLY_IN_GAME),
 };
 
 #undef M