King Boo's Haunted Mansion

What there is most of

• Brick 1 x 1 · Light Bluish Gray×27
• Brick Sloped 45° 1 x 1 x 2/3 Quadruple Convex [Pyramid] · Black×20
• Brick 1 x 3 · Light Bluish Gray×18
• Plate 1 x 2 · Reddish Brown×18
• Plate Special 1 x 2 Rounded with 2 Open Studs · Light Bluish Gray×18
• Brick Special 1 x 2 with 1 Center Stud on 1 Side, Bottom Stud Holder · Light Bluish Gray×16
• Plate 1 x 2 · Tan×16
• Brick Sloped 30° 1 x 2 x 2/3 · Dark Purple×15
• Brick Special 1 x 4 with Masonry Brick Profile · Light Bluish Gray×13
• Window 1 x 2 x 2 Castle · Black×13
• Window Pane Latticed 1 x 2 x 2 · Black×13
• Brick Sloped 45° 2 x 1 with Bottom Pin · Light Bluish Gray×12
• Brick Wedged 2 x 2 Facet · Light Bluish Gray×12
• Plate 2 x 4 · Reddish Brown×12
• Brick 1 x 1 x 3 · Reddish Brown×11
• Plate 2 x 2 · Reddish Brown×11
• Plate Special 1 x 2 with Door Rail · Dark Orange×11
• Technic Pin with Friction Ridges Lengthwise with No Center Slots · Black×11
• Plate 1 x 1 · Light Bluish Gray×10
• Brick 1 x 2 x 2 with Inside Stud Holder · Light Bluish Gray×9

The twenty most numerous parts, longest bar first. Start a checklist to see all 272 part types and tick them off as you find them.