diff --git a/OpenSim/Framework/EstateSettings.cs b/OpenSim/Framework/EstateSettings.cs
index afbdd49e27..142b78393b 100644
--- a/OpenSim/Framework/EstateSettings.cs
+++ b/OpenSim/Framework/EstateSettings.cs
@@ -425,5 +425,11 @@ namespace OpenSim.Framework
             AllowParcelChanges = ((regionFlags & (ulong)RegionFlags.AllowParcelChanges) == (ulong)RegionFlags.AllowParcelChanges);
             AllowSetHome = ((regionFlags & (ulong)RegionFlags.AllowSetHome) == (ulong)RegionFlags.AllowSetHome);
         }
+
+        public bool GroupAccess(UUID groupID)
+        {
+            return l_EstateGroups.Contains(groupID);
+        }
+
     }
 }
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index 23e3e15077..9c4bfb6480 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -11516,6 +11516,75 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
             return list;
         }
 
+        public LSL_Integer llManageEstateAccess(int action, string avatar)
+        {
+            m_host.AddScriptLPS(1);
+            EstateSettings estate = World.RegionInfo.EstateSettings;
+            bool isAccount = false;
+            bool isGroup = false;
+
+            if (!estate.IsEstateOwner(m_host.OwnerID) || !estate.IsEstateManager(m_host.OwnerID))
+                return 0;
+
+            UUID id = new UUID();
+            if (!UUID.TryParse(avatar, out id))
+                return 0;
+
+            UserAccount account = World.UserAccountService.GetUserAccount(World.RegionInfo.ScopeID, id);
+            isAccount = account != null ? true : false;
+            if (!isAccount)
+            {
+                IGroupsModule groups = World.RequestModuleInterface<IGroupsModule>();
+                if (groups != null)
+                {
+                    GroupRecord group = groups.GetGroupRecord(id);
+                    isGroup = group != null ? true : false;
+                    if (!isGroup)
+                        return 0;
+                }
+                else
+                    return 0;
+            }
+
+            switch (action)
+            {
+                case ScriptBaseClass.ESTATE_ACCESS_ALLOWED_AGENT_ADD:
+                    if (!isAccount) return 0;
+                    if (estate.HasAccess(id)) return 1;
+                    if (estate.IsBanned(id, World.GetUserFlags(id)))
+                        estate.RemoveBan(id);
+                    estate.AddEstateUser(id);
+                    break;
+                case ScriptBaseClass.ESTATE_ACCESS_ALLOWED_AGENT_REMOVE:
+                    if (!isAccount || !estate.HasAccess(id)) return 0;
+                    estate.RemoveEstateUser(id);
+                    break;
+                case ScriptBaseClass.ESTATE_ACCESS_ALLOWED_GROUP_ADD:
+                    if (!isGroup) return 0;
+                    if (estate.GroupAccess(id)) return 1;
+                    estate.AddEstateGroup(id);
+                    break;
+                case ScriptBaseClass.ESTATE_ACCESS_ALLOWED_GROUP_REMOVE:
+                    if (!isGroup || !estate.GroupAccess(id)) return 0;
+                    estate.RemoveEstateGroup(id);
+                    break;
+                case ScriptBaseClass.ESTATE_ACCESS_BANNED_AGENT_ADD:
+                    if (!isAccount) return 0;
+                    if (estate.IsBanned(id, World.GetUserFlags(id))) return 1;
+                    EstateBan ban = new EstateBan();
+                    ban.EstateID = estate.EstateID;
+                    ban.BannedUserID = id;
+                    estate.AddBan(ban);
+                    break;
+                case ScriptBaseClass.ESTATE_ACCESS_BANNED_AGENT_REMOVE:
+                    if (!isAccount || !estate.IsBanned(id, World.GetUserFlags(id))) return 0;
+                    estate.RemoveBan(id);
+                    break;
+                default: return 0;
+            }
+            return 1;
+        }
+
         #region Not Implemented
         //
         // Listing the unimplemented lsl functions here, please move
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs
index f4de93ec31..73131e6530 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Interface/ILSL_Api.cs
@@ -244,6 +244,7 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api.Interfaces
               void llLoopSound(string sound, double volume);
               void llLoopSoundMaster(string sound, double volume);
               void llLoopSoundSlave(string sound, double volume);
+       LSL_Integer llManageEstateAccess(int action, string avatar);
               void llMakeExplosion(int particles, double scale, double vel, double lifetime, double arc, string texture, LSL_Vector offset);
               void llMakeFire(int particles, double scale, double vel, double lifetime, double arc, string texture, LSL_Vector offset);
               void llMakeFountain(int particles, double scale, double vel, double lifetime, double arc, int bounce, string texture, LSL_Vector offset, double bounce_offset);
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
index 32226f97aa..11a8883901 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Constants.cs
@@ -435,6 +435,14 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
         public const int REGION_FLAG_ALLOW_DIRECT_TELEPORT = 0x100000;          // region allows direct teleports
         public const int REGION_FLAG_RESTRICT_PUSHOBJECT = 0x400000;            // region restricts llPushObject
 
+        //llManageEstateAccess
+        public const int ESTATE_ACCESS_ALLOWED_AGENT_ADD = 0;
+        public const int ESTATE_ACCESS_ALLOWED_AGENT_REMOVE = 1;
+        public const int ESTATE_ACCESS_ALLOWED_GROUP_ADD = 2;
+        public const int ESTATE_ACCESS_ALLOWED_GROUP_REMOVE = 3;
+        public const int ESTATE_ACCESS_BANNED_AGENT_ADD = 4;
+        public const int ESTATE_ACCESS_BANNED_AGENT_REMOVE = 5;
+
         public static readonly LSLInteger PAY_HIDE = new LSLInteger(-1);
         public static readonly LSLInteger PAY_DEFAULT = new LSLInteger(-2);
 
diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs
index e0c81c781e..a27899fdb5 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Runtime/LSL_Stub.cs
@@ -1071,6 +1071,11 @@ namespace OpenSim.Region.ScriptEngine.Shared.ScriptBase
             m_LSL_Functions.llLoopSoundSlave(sound, volume);
         }
 
+        public LSL_Integer llManageEstateAccess(int action, string avatar)
+        {
+            return m_LSL_Functions.llManageEstateAccess(action, avatar);
+        }
+
         public void llMakeExplosion(int particles, double scale, double vel, double lifetime, double arc, string texture, LSL_Vector offset)
         {
             m_LSL_Functions.llMakeExplosion(particles, scale, vel, lifetime, arc, texture, offset);