How many pieces does the LEGO Bikini Bottom Undersea Party (3818-1) have?

The LEGO Bikini Bottom Undersea Party set (3818-1) contains 471 pieces. It was released in 2012 as part of the LEGO SpongeBob SquarePants theme.

How can I find missing parts for LEGO set 3818-1?

On BrickMissing you can check which parts from the LEGO Bikini Bottom Undersea Party (3818-1) you already own. Add your LEGO collection and we'll show exactly which of the 471 pieces you're missing and which you already have.

Can I build the LEGO Bikini Bottom Undersea Party with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 471 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Bikini Bottom Undersea Party from?

The LEGO Bikini Bottom Undersea Party (3818-1) belongs to the LEGO SpongeBob SquarePants theme. You can browse all SpongeBob SquarePants sets on BrickMissing to find more sets from this theme.

Bikini Bottom Undersea Party

3818-1 SpongeBob SquarePants 2012 471 parts 3% repair risk Intermediate

The LEGO SpongeBob SquarePants Bikini Bottom Undersea Party 3818-1 brings the underwater celebration to life with 471 pieces. SpongeBob hosts a grand gathering, featuring Patrick on the DJ turntable spinning tunes and Squidward managing the juice bar, complete with its cabinet. A highlight of the party involves SpongeBob himself catapulting the party cake at Mrs. Puff, adding a dynamic play element. The set includes SpongeBob’s distinctive house, measuring 15cm wide and 20cm tall, featuring an ejecting bed function and Gary’s bowl. Squidward’s house is also present, equipped with a music stand and art studio for creative moments. Guests can enjoy the spinning merry-go-round and a moving seesaw, expanding the interactive possibilities within this vibrant Bikini Bottom scene.

Parts Inventory

🧱 471 parts

Part	Color	Qty	LEGO price each
Tile Special 1 x 1 with Clip with Rounded Tips 12825	Yellow	1×	Check price → View
Tile Special 1 x 1 with Clip with Rounded Tips 12825	Light Bluish Gray	3×	Check price → View
Plant, Cherries 22667	Lime	1×	€0,08 View at LEGO → View
Wedge Plate 3 x 6 Cut Corners 2419	Orange	2×	Check price → View
Tile 1 x 4 with Groove 2431	Dark Brown	2×	€0,12 View at LEGO → View
Tile Special 1 x 2 with Handle 2432	Yellow	2×	€0,11 View at LEGO → View
Bracket 1 x 2 - 1 x 4 [Square Corners] 2436	Light Bluish Gray	1×	Check price → View
Slope Inverted 75° 2 x 1 x 3 2449	Orange	8×	Check price → View
Brick 1 x 1 x 5 with Solid Stud 2453b	Reddish Brown	2×	€0,27 View at LEGO → View
Brick 1 x 1 x 5 with Solid Stud 2453b	Light Bluish Gray	1×	€0,27 View at LEGO → View
Brick 1 x 2 x 5 with Blocked Open Studs and Bottom Stud Holder with Asymmetric Ridges 2454a	Dark Gray	4×	Check price → View
Plate Round 2 x 2 with Rounded Bottom [Boat Stud] 2654	Black	6×	€0,07 View at LEGO → View

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Repairability

Can you fix Bikini Bottom Undersea Party if a piece goes missing?

3%Low repair risk

easy to fixguard this box

5 of the 169 part+color combinations in this set appear in 3 or fewer sets ever made. Lose one of those and a replacement is very hard to find.

Theme average

5.7%

All sets

6.7%

Hardest to replace

Sticker Sheet for Set 3818-1 · Unknown · only this setPanel 1 x 2 x 2 · Trans-Clear · only this setBrick Round 2 x 2 Dome Top, Blocked Open… · Dark Green · 2 sets ever

How we calculate this →