diff --git a/app/Models/Proposal.php b/app/Models/Proposal.php
index 0efde71..09ed1b1 100644
--- a/app/Models/Proposal.php
+++ b/app/Models/Proposal.php
@@ -24,6 +24,22 @@ class Proposal extends Model
 {
     use Reportable;
 
+    protected static function boot()
+    {
+        parent::boot();
+
+        static::deleting(function(Proposal $self) {
+            $self->reportsOf()->delete();
+
+            // update refcounts
+            $rev = $self->revision;
+            $rev->decrement('refs');
+
+            // Delete the revision if it has no other refs (manually, to update row refs)
+            if ($rev->refs <= 0) $rev->delete();
+        });
+    }
+
     /** Authoring user */
     public function author()
     {
diff --git a/app/Models/Revision.php b/app/Models/Revision.php
index c64fce8..979a6fb 100644
--- a/app/Models/Revision.php
+++ b/app/Models/Revision.php
@@ -32,6 +32,8 @@ class Revision extends Model
         static::deleting(function(Revision $self) {
             // update refcounts
             $self->rows()->decrement('refs');
+
+            $self->rows()->where('refs', '<=', 0)->delete();
         });
     }
 
diff --git a/app/Models/Table.php b/app/Models/Table.php
index 01bcc3f..ed8a0cc 100644
--- a/app/Models/Table.php
+++ b/app/Models/Table.php
@@ -38,8 +38,15 @@ class Table extends Model
         parent::boot();
 
         static::deleting(function(Table $self) {
-            // update refcounts
+            // update revision refcounts
             $self->revisions()->decrement('refs');
+
+            $self->reportsOf()->delete();
+
+            // delete revisions with zero refs (manually, to properly cascade to rows)
+            foreach ($self->revisions()->where('refs', '<=', 0)->get() as $rev) {
+                $rev->delete();
+            }
         });
     }
 
diff --git a/app/Models/TableComment.php b/app/Models/TableComment.php
index 820b912..26b23a0 100644
--- a/app/Models/TableComment.php
+++ b/app/Models/TableComment.php
@@ -25,6 +25,15 @@ class TableComment extends Model
 {
     use Reportable;
 
+    protected static function boot()
+    {
+        parent::boot();
+
+        static::deleting(function(TableComment $self) {
+            $self->reportsOf()->delete();
+        });
+    }
+
     /** Context data table */
     public function table()
     {
diff --git a/app/Models/User.php b/app/Models/User.php
index 60c9b37..6c426b9 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -58,10 +58,18 @@ class User extends Authenticatable
         parent::boot();
 
         static::deleting(function(User $self) {
+            // comments are deleted via cascade
+
+            $self->reportsOf()->delete();
+
             // manually delete proposals to ensure row refcounts are updated
             foreach ($self->proposals as $proposal) {
                 $proposal->delete();
             }
+
+            foreach ($self->tables as $table) {
+                $table->delete();
+            }
         });
     }