diff --git a/changelog.d/7103.bugfix b/changelog.d/7103.bugfix
new file mode 100644
index 0000000000..12a07b79e5
--- /dev/null
+++ b/changelog.d/7103.bugfix
@@ -0,0 +1 @@
+Fixes space list and new chat bottom sheets showing too small in New App Layout (especially evident in landscape)
diff --git a/vector/src/main/java/im/vector/app/core/platform/VectorBaseBottomSheetDialogFragment.kt b/vector/src/main/java/im/vector/app/core/platform/VectorBaseBottomSheetDialogFragment.kt
index ddc281fdd1..ec6f3288f8 100644
--- a/vector/src/main/java/im/vector/app/core/platform/VectorBaseBottomSheetDialogFragment.kt
+++ b/vector/src/main/java/im/vector/app/core/platform/VectorBaseBottomSheetDialogFragment.kt
@@ -25,6 +25,7 @@ import android.view.View
 import android.view.ViewGroup
 import android.widget.FrameLayout
 import androidx.annotation.CallSuper
+import androidx.annotation.FloatRange
 import androidx.lifecycle.ViewModelProvider
 import androidx.lifecycle.lifecycleScope
 import androidx.viewbinding.ViewBinding
@@ -39,6 +40,7 @@ import im.vector.app.core.extensions.toMvRxBundle
 import im.vector.app.core.utils.DimensionConverter
 import im.vector.app.features.analytics.AnalyticsTracker
 import im.vector.app.features.analytics.plan.MobileScreen
+import io.github.hyuwah.draggableviewlib.Utils
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import reactivecircus.flowbinding.android.view.clicks
@@ -165,6 +167,13 @@ abstract class VectorBaseBottomSheetDialogFragment<VB : ViewBinding> : BottomShe
         forceExpandState()
     }
 
+    protected fun setPeekHeightAsScreenPercentage(@FloatRange(from = 0.0, to = 1.0) percentage: Float) {
+        context?.let {
+            val screenHeight = Utils.getScreenHeight(it)
+            bottomSheetBehavior?.setPeekHeight((screenHeight * percentage).toInt(), true)
+        }
+    }
+
     protected fun forceExpandState() {
         if (showExpanded) {
             // Force the bottom sheet to be expanded
diff --git a/vector/src/main/java/im/vector/app/features/home/room/list/home/NewChatBottomSheet.kt b/vector/src/main/java/im/vector/app/features/home/room/list/home/NewChatBottomSheet.kt
index 076b4fe4ee..3f12ae4a63 100644
--- a/vector/src/main/java/im/vector/app/features/home/room/list/home/NewChatBottomSheet.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/list/home/NewChatBottomSheet.kt
@@ -16,46 +16,53 @@
 
 package im.vector.app.features.home.room.list.home
 
+import android.app.Dialog
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import com.google.android.material.bottomsheet.BottomSheetDialogFragment
 import dagger.hilt.android.AndroidEntryPoint
+import im.vector.app.core.platform.VectorBaseBottomSheetDialogFragment
 import im.vector.app.databinding.FragmentNewChatBottomSheetBinding
 import im.vector.app.features.navigation.Navigator
 import javax.inject.Inject
 
 @AndroidEntryPoint
-class NewChatBottomSheet : BottomSheetDialogFragment() {
+class NewChatBottomSheet : VectorBaseBottomSheetDialogFragment<FragmentNewChatBottomSheetBinding>() {
 
     @Inject lateinit var navigator: Navigator
 
-    private lateinit var binding: FragmentNewChatBottomSheetBinding
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentNewChatBottomSheetBinding {
+        return FragmentNewChatBottomSheetBinding.inflate(inflater, container, false)
+    }
 
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
-        binding = FragmentNewChatBottomSheetBinding.inflate(inflater, container, false)
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         initFABs()
-        return binding.root
     }
 
     private fun initFABs() {
-        binding.startChat.setOnClickListener {
+        views.startChat.debouncedClicks {
             dismiss()
             navigator.openCreateDirectRoom(requireActivity())
         }
 
-        binding.createRoom.setOnClickListener {
+        views.createRoom.debouncedClicks {
             dismiss()
             navigator.openCreateRoom(requireActivity())
         }
 
-        binding.exploreRooms.setOnClickListener {
+        views.exploreRooms.debouncedClicks {
             dismiss()
             navigator.openRoomDirectory(requireContext())
         }
     }
 
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+        return super.onCreateDialog(savedInstanceState).apply {
+            setPeekHeightAsScreenPercentage(0.5f)
+        }
+    }
+
     companion object {
         const val TAG = "NewChatBottomSheet"
     }
diff --git a/vector/src/main/java/im/vector/app/features/spaces/SpaceListBottomSheet.kt b/vector/src/main/java/im/vector/app/features/spaces/SpaceListBottomSheet.kt
index 910f8c5379..4787aed8ae 100644
--- a/vector/src/main/java/im/vector/app/features/spaces/SpaceListBottomSheet.kt
+++ b/vector/src/main/java/im/vector/app/features/spaces/SpaceListBottomSheet.kt
@@ -16,25 +16,32 @@
 
 package im.vector.app.features.spaces
 
+import android.app.Dialog
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import com.google.android.material.bottomsheet.BottomSheetDialogFragment
 import im.vector.app.R
 import im.vector.app.core.extensions.replaceChildFragment
+import im.vector.app.core.platform.VectorBaseBottomSheetDialogFragment
 import im.vector.app.databinding.FragmentSpacesBottomSheetBinding
 
-class SpaceListBottomSheet : BottomSheetDialogFragment() {
+class SpaceListBottomSheet : VectorBaseBottomSheetDialogFragment<FragmentSpacesBottomSheetBinding>() {
 
-    private lateinit var binding: FragmentSpacesBottomSheetBinding
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentSpacesBottomSheetBinding {
+        return FragmentSpacesBottomSheetBinding.inflate(inflater, container, false)
+    }
 
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
-        binding = FragmentSpacesBottomSheetBinding.inflate(inflater, container, false)
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         if (savedInstanceState == null) {
             replaceChildFragment(R.id.space_list, SpaceListFragment::class.java)
         }
-        return binding.root
+    }
+
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+        return super.onCreateDialog(savedInstanceState).apply {
+            setPeekHeightAsScreenPercentage(0.75f)
+        }
     }
 
     companion object {