diff --git a/src/ifcconvert/IfcConvert.cpp b/src/ifcconvert/IfcConvert.cpp
index 0f7f64b8f8..c2187c9d9d 100644
--- a/src/ifcconvert/IfcConvert.cpp
+++ b/src/ifcconvert/IfcConvert.cpp
@@ -386,6 +386,8 @@ int main(int argc, char** argv) {
 		("draw-storey-heights",
 			po::value<std::string>(&storey_height_display)->default_value("none")->implicit_value("full"),
 			"Draws a horizontal line at the height of building storeys in vertical drawings")
+		("storey-height-line-length", po::value<double>(), 
+			"Length of the line when --draw-storey-heights=left")
 		("svg-xmlns",
 			"Stores name and guid in a separate namespace as opposed to data-name, data-guid")
 		("svg-poly",
@@ -1008,6 +1010,11 @@ int main(int argc, char** argv) {
 		if (relative_center_x && relative_center_y) {
 			static_cast<SvgSerializer*>(serializer.get())->setDrawingCenter(*relative_center_x, *relative_center_y);
 		}
+		if (vmap.count("storey-height-line-length")) {
+			static_cast<SvgSerializer*>(serializer.get())->setStoreyHeightLineLength(
+				vmap["storey-height-line-length"].as<double>()
+			);
+		}
 	}
 
     if (convert_back_units) {
diff --git a/src/serializers/SvgSerializer.cpp b/src/serializers/SvgSerializer.cpp
index 1ff4529977..40325202e5 100644
--- a/src/serializers/SvgSerializer.cpp
+++ b/src/serializers/SvgSerializer.cpp
@@ -1236,7 +1236,8 @@ void SvgSerializer::write(const geometry_data& data) {
 
 						auto d = (p1.XYZ() - p0.XYZ());
 						d.Normalize();
-						d *= 3;
+						const double shll = storey_height_line_length_.get_value_or(2.);
+						d *= shll;
 						gp_Pnt p1x(p0.XYZ() + d);
 
 						wire = BRepBuilderAPI_MakePolygon(p0, p1x).Wire();
@@ -1681,7 +1682,9 @@ void SvgSerializer::finalize() {
 							double x0, y0, z0, x1, y1, z1;
 							bnd_.Get(x0, y0, z0, x1, y1, z1);
 
-							BRepBuilderAPI_MakeFace mf(elev_pln, x0 - 1., x1 + 1., y0 - 1., y1 + 1.);
+							const double shll = storey_height_line_length_.get_value_or(2.);
+
+							BRepBuilderAPI_MakeFace mf(elev_pln, x0 - shll, x1 + shll, y0 - shll, y1 + shll);
 							gp_Trsf trsf;
 							TopoDS_Compound C;
 							BRep_Builder B;
diff --git a/src/serializers/SvgSerializer.h b/src/serializers/SvgSerializer.h
index 762d7ff8f8..f80447d3e7 100644
--- a/src/serializers/SvgSerializer.h
+++ b/src/serializers/SvgSerializer.h
@@ -137,6 +137,7 @@ protected:
 	boost::optional<std::vector<section_data>> section_data_;
 	boost::optional<std::vector<section_data>> deferred_section_data_;
 	boost::optional<double> scale_, calculated_scale_, center_x_, center_y_, scale_backup_;
+	boost::optional<double> storey_height_line_length_;
 	boost::optional<std::pair<double, double>> size_, size_backup_;
 
 	bool with_section_heights_from_storey_, print_space_names_, print_space_areas_;
@@ -216,6 +217,7 @@ public:
 	void setPrintSpaceAreas(bool b) { print_space_areas_ = b; }
 	void setDrawStoreyHeights(storey_height_display_types sh) { storey_height_display_ = sh; }
 	void setDrawDoorArcs(bool b) { draw_door_arcs_ = b; }
+	void setStoreyHeightLineLength(double d) { storey_height_line_length_ = d; }
 
 	std::array<std::array<double, 3>, 3> resize();
 	void resetScale();