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LEGO Missing Piece Checker

Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece and leave with the element ID LEGO asks for, or a link to buy the part.

Tree House Treasures

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31078 Tree House Treasures

251 pieces in 110 part and color combinations, plus 2 minifigures.

The official piece count includes the 9 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

Before you call it missing

Builders who report a missing piece often find it in one of these places. Tick each one off as you look.

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Piece checklist

Plates Special 38 pieces

  • Technic Plate 2 x 4 [3 Holes] Black Part 3709 Element 370926 ×1
  • Plate Special 1 x 2 [Side Handle Closed Ends] Dark Bluish Gray Part 48336 Element 6146321 ×2
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Light Bluish Gray Part 60470b Element 6337268 or 4556157 ×1
  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Red Part 61252 Element 6335377 or 4524644 ×4
  • Plate Special 1 x 2 [Side Handle Closed Ends] Red Part 48336 Element 4226876 ×8
  • Plate Special 2 x 2 with Groove and Center Stud (Jumper) Red Part 87580 Element 6126048 or 4581308 ×3
  • Technic Plate 2 x 6 [5 Holes] Red Part 32001 Element 4582843 or 3200121 ×1
  • Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper) Reddish Brown Part 15573 Element 6092590 ×4
  • Plate Special 1 x 2 with Clip Horizontal on End Reddish Brown Part 63868 Element 6338135 or 6008297 ×2
  • Plate Special 1 x 4 with 2 Studs, 3 Bottom Tubes Reddish Brown Part 92593 Element 6210077 ×7
  • Plate Special Round 2 x 2 with Pin Hole and 4 Bars Up Reddish Brown Part 98284 Element 6313506 or 4648118 ×1
  • Plate Special 1 x 1 with Clip Vertical [Thick Open O Clip] White Part 60897 Element 6330191 or 4613256 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] White Part 2540 Element 4140583 or 254051 ×2

Bricks Sloped 28 pieces

  • Brick Sloped 33° 3 x 2 Dark Bluish Gray Part 3298 Element 4211106 ×2
  • Brick Sloped 45° 2 x 1 with Bottom Pin Dark Brown Part 3040b Element 4518557 ×4
  • Brick Sloped 65° 2 x 1 x 2 Reddish Brown Part 60481 Element 4629736 ×4
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Tan Part 54200 Element 4516055 or 4278069 1 spare in the box ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Tan Part 3660 Element 4118866 ×4
  • Brick Sloped 45° 2 x 1 with Bottom Pin White Part 3040b Element 6552115 or 4121932 ×12

Plates 26 pieces

  • Plate 8 x 16 Bright Green Part 92438 Element 4610353 ×1
  • Plate 2 x 4 Dark Tan Part 3020 Element 4497077 or 4267874 ×2
  • Plate 6 x 8 Dark Tan Part 3036 Element 4251796 ×1
  • Plate 1 x 2 Green Part 3023 Element 302328 ×3
  • Plate 1 x 3 Green Part 3623 Element 4107758 or 362328 ×2
  • Plate 2 x 2 Green Part 3022 Element 302228 ×1
  • Plate 8 x 8 Medium Nougat Part 41539 Element 6133486 ×1
  • Plate 4 x 6 Red Part 3032 Element 303221 ×2
  • Plate 1 x 2 Reddish Brown Part 3023 Element 4211150 ×2
  • Plate 2 x 2 Reddish Brown Part 3022 Element 4613975 or 4216695 ×2
  • Plate 2 x 4 Reddish Brown Part 3020 Element 4211186 ×2
  • Plate 1 x 8 Tan Part 3460 Element 4114324 or 346005 ×1
  • Plate 8 x 8 Tan Part 41539 Element 4624223 or 4502811 ×1
  • Plate 1 x 1 White Part 3024 Element 6548262 or 302401 1 spare in the box ×2
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×2
  • Plate 1 x 8 White Part 3460 Element 6550141 or 346001 ×1

Plates Round Curved and Dishes 22 pieces

  • Plate Special 1 x 2 Rounded with 2 Open Studs Black Part 35480 Element 6210270 ×1
  • Plate Round 1 x 1 with Solid Stud Bright Pink Part 6141 Element 4517996 1 spare in the box ×2
  • Plate Round 1 x 1 with Solid Stud Dark Bluish Gray Part 6141 Element 4210633 1 spare in the box ×6
  • Plate Round 1 x 1 with Solid Stud Lime Part 6141 Element 4183133 1 spare in the box ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Medium Nougat Part 4032a Element 6167643 ×1
  • Plate Round 1 x 1 with Solid Stud Orange Part 6141 Element 4157103 1 spare in the box ×2
  • Plate Round 1 x 1 with Open Stud Pearl Gold Part 85861 Element 6190252 or 6141499 1 spare in the box ×2
  • Plate Round Corner 4 x 4 Tan Part 30565 Element 4570516 or 4295315 ×2
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] White Part 2654 Element 6601843 or 6552259 ×4

Bricks 20 pieces

  • Brick 1 x 4 Reddish Brown Part 3010 Element 4211225 ×4
  • Brick 2 x 4 Reddish Brown Part 3001 Element 4211201 ×2
  • Brick 1 x 1 White Part 3005 Element 6552096 or 6548258 ×2
  • Brick 1 x 1 x 3 White Part 14716 Element 6548277 or 6055541 ×4
  • Brick 1 x 2 White Part 3004 Element 6548257 or 4613964 ×6
  • Brick 1 x 6 White Part 3009 Element 6552097 or 6548259 ×2

Tiles 19 pieces

  • Tile 1 x 3 Dark Brown Part 63864 Element 6167928 ×1
  • Tile 1 x 3 with Wood Grain and 4 Nails Print Dark Tan Part 63864pr0009 Element 6177892 ×1
  • Tile 2 x 3 Medium Blue Part 26603 Element 6211973 ×1
  • Tile 1 x 4 with Wood Groove and Nails Print Medium Nougat Part 2431pr0081 Element 6151654 ×2
  • Tile 1 x 6 with Groove Medium Nougat Part 6636 Element 6102995 ×4
  • Tile 2 x 4 with Groove Red Part 87079 Element 4560179 ×2
  • Tile 2 x 2 with Map River, Dark Tan Mountains, Handwriting and Red X Print Tan Part 3068bpr0139 Element 4524449 ×1
  • Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 ×2
  • Tile 1 x 3 White Part 63864 Element 6552134 or 6548270 ×2
  • Tile 2 x 3 White Part 26603 Element 6552162 or 6550161 ×2
  • Tile 2 x 3 Yellow Part 26603 Element 6388483 or 6179184 ×1

Bricks Special 16 pieces

  • Brick Special 1 x 2 Palisade [aka Log] Reddish Brown Part 30136 Element 4211180 ×10
  • Brick Special 1 x 2 with 2 Studs on 1 Side Tan Part 11211 Element 6024495 ×2
  • Brick Special 1 x 1 with Handle White Part 2921 Element 6615537 or 6170567 ×2
  • Brick Special 1 x 2 Palisade [aka Log] White Part 30136 Element 6552148 or 6059185 ×2

Bricks Curved 11 pieces

  • Brick Arch 1 x 5 x 4 [Continuous Bow, Raised Underside Cross Supports] Dark Brown Part 14395 Element 6209722 or 6075065 ×5
  • Brick Arch 1 x 3 x 3 [Gothic] Reddish Brown Part 13965 Element 6055086 ×3
  • Brick Arch 1 x 6 x 2 - Thin Top without Reinforced Underside [New Version] White Part 15254 Element 6548280 or 6106183 ×1
  • Brick Curved Inverted 2 x 1 White Part 24201 Element 6601928 or 6172927 ×2

Plates Wedged 8 pieces

  • Wedge Plate 8 x 8 Cut Corner Dark Azure Part 30504 Element 6452542 or 6227714 ×1
  • Wedge Plate 4 x 2 Left Green Part 41770 Element 4543262 or 4161334 ×3
  • Wedge Plate 4 x 2 Right Green Part 41769 Element 4543259 or 4160871 ×3
  • Wedge Plate 4 x 4 Cut Corner Green Part 30503 Element 4651215 or 4208191 ×1

Minifig Accessories 7 pieces

  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Black Part 64644 Element 4538456 ×6
  • Equipment Telescope / Torch / Spyglass, Support Round 1 x 1 x 1 2/3 Pearl Gold Part 64644 Element 4538126 ×1

Windows and Doors 7 pieces

  • Window 1 x 4 x 3 without Shutter Tabs Red Part 60594 Element 6138800 or 4583716 ×3
  • Window 1 x 2 x 3 Pane with Thick Corner Tabs White Part 60608 Element 6171058 or 4520842 ×4

Tiles Special 5 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Dark Bluish Gray Part 2412b Element 4210631 ×1
  • Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] Pearl Gold Part 99563 Element 6207933 or 4651407 ×1
  • Tile Special 2 x 2 Corner with Cut Corner - Facet Red Part 27263 Element 6217194 ×2
  • Tile Special 2 x 3 with 2 Clips [Thick Open O Clips] Reddish Brown Part 30350b Element 4544525 or 4205467 ×1

Bars, Ladders and Fences 4 pieces

  • Bar 1 x 4 x 3 [End Tabs] Dark Bluish Gray Part 62113 Element 4521886 ×1
  • Bar 6L with Stop Ring Dark Bluish Gray Part 63965 Element 6170420 or 6081987 ×1
  • Bar Holder with Clip Dark Bluish Gray Part 11090 Element 6336970 or 6015890 ×1
  • Bar 4L (Lightsaber Blade / Wand) Light Bluish Gray Part 30374 Element 6116608 or 4211628 ×1

Plants & Trees 4 pieces

  • Plant, Leaves 4 x 3 Green Part 2423 Element 6268814 or 242328 ×4

Technic Axles 4 pieces

  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×3
  • Technic Axle 5 with Stop Reddish Brown Part 15462 Element 6159763 ×1

Technic Connectors 4 pieces

  • Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top] Dark Bluish Gray Part 32530 Element 4210763 ×1
  • Technic Axle Connector Hub with 4 Bars at 90° Reddish Brown Part 48723 Element 4252456 ×1
  • Technic Axle Connector Smooth [with x Hole + Orientation] Reddish Brown Part 59443 Element 4531751 ×2

Containers 3 pieces

  • Barrel Half Large with Axle Hole Medium Nougat Part 64951 Element 6143217 ×1
  • Treasure Chest Bottom with Rear Slots, No Groove Medium Nougat Part 4738c Element 6102984 ×1
  • Treasure Chest Lid [Thick Hinge] Medium Nougat Part 4739a Element 6254218 or 6167286 ×1

Technic Bricks 3 pieces

  • Technic Brick 1 x 2 [1 Pin Hole] Reddish Brown Part 3700 Element 4211252 ×3

Technic Pins 3 pieces

  • Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 1 spare in the box ×2
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×1

Tiles Round and Curved 3 pieces

  • Tile 4 x 4 Curved, Macaroni Medium Nougat Part 27507 Element 6458176 or 6387478 ×2
  • Tile Round 1 x 1 with Padlock Print Pearl Gold Part 98138pr0014 Element 6287846 or 6039771 1 spare in the box ×1

Animals / Creatures 2 pieces

  • Insect, Spider Black Part 30238 Element 4113209 ×1
  • Animal, Bear / Teddy, Arms Down with Black Eyes, Nose and Mouth / Tan Belly Print Medium Nougat Part 98382pr0001 Element 6632462 or 6055832 ×1

Bricks Wedged 2 pieces

  • Brick Wedged, Sloped 45° 2 x 2 Corner Light Bluish Gray Part 13548 Element 6034676 ×2

Minifig Shields, Weapons, & Tools 2 pieces

  • Weapon Sword / Cutlass Dark Bluish Gray Part 2530 Element 6492106 or 6205488 1 spare in the box ×2

Minifig Upper Body 2 pieces

  • Arm Mechanical with 2 Clips [Battle Droid] Black Part 30377 Element 6330086 or 4223247 1 spare in the box ×2

Panels 2 pieces

  • Panel 1 x 1 x 1 Corner White Part 6231 Element 6619293 or 623101 ×2

Rock 2 pieces

  • Rock 1 x 1 Jewel / Gem 24 Facet Trans-Red Part 30153 Element 6513969 or 6247785 1 spare in the box ×2

Bricks Round and Cones 1 piece

  • Brick Round 2 x 2 with Axle Hole Light Bluish Gray Part 3941 Element 4211526 ×1

Flags, Banners and Signs 1 piece

  • Flag 2 x 2 Trapezoid with Flat Area between Clips White Part 44676 Element 6023099 or 4507191 ×1

String, Bands and Reels 1 piece

  • String with End Studs 11L Overall Black Part 14226c11 Element 6096955 or 6037558 ×1

Wheels and Tyres 1 piece

  • Tyre Offset Tread with Center Band 23 x 7 Black Part 61254 Element 4541455 ×1

Minifigures 2 figures

  • Pirate Boy Minifigure, checked as a whole figure ×1
  • Pirate Girl Minifigure, checked as a whole figure ×1

Tick each piece as you find it, or mark it missing.

When a piece really is missing

Ask LEGO

LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for the set number and each piece's element ID, the number printed beside the piece in the parts list at the back of the instructions. This checker lists both.

Request a replacement from LEGO

Buy the piece

Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from older or second-hand sets.

Keep a record

Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.

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