diff --git a/src/main/java/org/sgrewritten/stargate/api/event/StargatePortalBuilderEvent.java b/src/main/java/org/sgrewritten/stargate/api/event/StargatePortalBuilderEvent.java
new file mode 100644
index 00000000..0b6fecbd
--- /dev/null
+++ b/src/main/java/org/sgrewritten/stargate/api/event/StargatePortalBuilderEvent.java
@@ -0,0 +1,105 @@
+package org.sgrewritten.stargate.api.event;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.sgrewritten.stargate.api.gate.GateBuilder;
+import org.sgrewritten.stargate.api.network.PortalBuilder;
+
+import java.util.Objects;
+
+/**
+ * <p>Is triggered before the {@link org.sgrewritten.stargate.api.event.portal.StargateCreatePortalEvent}.</p>
+ */
+public class StargatePortalBuilderEvent extends Event {
+    private static final HandlerList handlerList = new HandlerList();
+    private final PortalBuilder portalBuilder;
+    private final GateBuilder gateBuilder;
+    private final String[] args;
+    private final Player player;
+
+
+    /**
+     *
+     * @param portalBuilder <p>The portal builder that is going to build the portal</p>
+     * @param gateBuilder <p>The gate builder which is going to build the gate</p>
+     * @param args <p>The sign arguments, has to have an length of aat least 4</p>
+     * @param player <p>The player that initiated the event</p>
+     */
+    public StargatePortalBuilderEvent(@NotNull PortalBuilder portalBuilder, @NotNull GateBuilder gateBuilder, @NotNull String[] args, @Nullable Player player) {
+        this.portalBuilder = Objects.requireNonNull(portalBuilder);
+        this.gateBuilder = Objects.requireNonNull(gateBuilder);
+        if (args.length < 4) {
+            throw new IllegalArgumentException("Expected at least 4 input arguments");
+        }
+        this.args = Objects.requireNonNull(args);
+        this.player = player;
+    }
+
+    public @NotNull PortalBuilder getPortalBuilder() {
+        return this.portalBuilder;
+    }
+
+    public @NotNull GateBuilder getGateBuilder() {
+        return this.gateBuilder;
+    }
+
+    /**
+     * @return <p>The name for portal in the portal creation attempt</p>
+     */
+    public @NotNull String getPortalName() {
+        return args[0];
+    }
+
+    /**
+     * The name of the destination, might be empty if no destination was selected
+     *
+     * @return <p>The name of the destination</p>
+     */
+    public @NotNull String getDestinationName() {
+        return args[1];
+    }
+
+    /**
+     * Do note that this network name will be heavily modified from permission checks.
+     *
+     * @return <p>The initial name of the network</p>
+     */
+    public @NotNull String getNetworkName() {
+        return args[2];
+    }
+
+    /**
+     * Note that the resulting flags might heavily be changed from this string. Any string
+     * matching the pattern (\{.*?\}) will be ignored, but can be used for addons as flag
+     * arguments.
+     *
+     * @return <p>The initial string representing flags</p>
+     */
+    public @NotNull String getFlagString() {
+        return args[3];
+    }
+
+    /**
+     * @return <p>The player that initiated the event</p>
+     */
+    public @Nullable Player getPlayer() {
+        return player;
+    }
+
+    @Override
+    public @NotNull HandlerList getHandlers() {
+        return handlerList;
+    }
+
+    /**
+     * Gets a handler-list containing all event handlers
+     *
+     * @return <p>A handler-list with all event handlers</p>
+     */
+    public static HandlerList getHandlerList() {
+        return handlerList;
+    }
+}
diff --git a/src/main/java/org/sgrewritten/stargate/listener/BlockEventListener.java b/src/main/java/org/sgrewritten/stargate/listener/BlockEventListener.java
index 622b469b..93b1049b 100644
--- a/src/main/java/org/sgrewritten/stargate/listener/BlockEventListener.java
+++ b/src/main/java/org/sgrewritten/stargate/listener/BlockEventListener.java
@@ -37,6 +37,7 @@
 import org.sgrewritten.stargate.api.BlockHandlerResolver;
 import org.sgrewritten.stargate.api.StargateAPI;
 import org.sgrewritten.stargate.api.config.ConfigurationOption;
+import org.sgrewritten.stargate.api.event.StargatePortalBuilderEvent;
 import org.sgrewritten.stargate.api.event.portal.message.MessageType;
 import org.sgrewritten.stargate.api.formatting.LanguageManager;
 import org.sgrewritten.stargate.api.formatting.TranslatableMessage;
@@ -182,10 +183,12 @@ public void onSignChange(SignChangeEvent event) {
 
         try {
             GateBuilder gateBuilder = new ImplicitGateBuilder(event.getBlock().getLocation(), registry);
-            PortalBuilder portalBuilder = new PortalBuilder(stargateAPI, player, portalName).setGateBuilder(gateBuilder).setFlags(flagsString);
-            portalBuilder.setNetwork(networkOrServerName);
+            PortalBuilder portalBuilder = new PortalBuilder(stargateAPI, player, portalName).setFlags(flagsString);
+            portalBuilder.setNetwork(networkOrServerName).setGateBuilder(gateBuilder);
             portalBuilder.addEventHandling(player).addMessageReceiver(player).addPermissionCheck(player).setCost(ConfigurationHelper.getDouble(ConfigurationOption.CREATION_COST), player);
             portalBuilder.setDestination(destinationName).setAdaptiveGatePositionGeneration(true).setDestinationServerName(networkOrServerName);
+            StargatePortalBuilderEvent builderEvent = new StargatePortalBuilderEvent(portalBuilder, gateBuilder, event.getLines(), player);
+            builderEvent.callEvent();
             portalBuilder.build();
         } catch (NoFormatFoundException noFormatFoundException) {
             Stargate.log(Level.FINER, "No Gate format matches");