How many pieces are in the Build-A-Bob?

Build-A-Bob contains 445 pieces.

What age is the Build-A-Bob recommended for?

This set is recommended for ages 7-12.

When was the Build-A-Bob released?

Build-A-Bob was released in 2006.

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🏛 SpongeBob SquarePants

Set #3826

Build-A-Bob

Build-A-Bob is a quirky and unique LEGO set from the SpongeBob SquarePants theme.

Before you buy

Who it's for: Ages 7+ · Beginner build Kids and SpongeBob SquarePants fans
Build: 445 pieces · about 3 hours Build time is an estimate.
Price: $29.99 list price · 6.7¢ per piece
Availability: Retired at LEGO

★★★☆☆ 3.7 community rating

Fans appreciate the set's unique concept and the inclusion of the Plankton minifigure. Some find the building experience simple and enjoyable, while others criticize the limited complexity and somewhat blocky appearance of the final model.

$29.99

Check price on eBay

📝 Our Take

AI-assisted editorial summary, grounded in our LEGO database and public community discussions. How we use AI

Build-A-Bob is a quirky and unique LEGO set from the SpongeBob SquarePants theme. Released in 2006, it allows you to construct a customizable SpongeBob figure, offering a playful twist on the traditional LEGO building experience and capturing the show's whimsical nature.

This set is perfect for SpongeBob fans and those looking for a fun, lighthearted build. The building experience is straightforward and enjoyable, making it suitable for younger builders or anyone seeking a nostalgic trip back to Bikini Bottom.

Skip this if you prefer more complex or detailed LEGO models. While charming, Build-A-Bob prioritizes playability and customization over intricate design, consider other display-focused sets if that's your preference.

✨ New

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How does this set compare to other SpongeBob SquarePants LEGO sets in terms of collectibility? What are some creative ways to customize the 'Build-A-Bob' figure? Is this set a good entry point for someone new to LEGO collecting? How does the inclusion of the Plankton minifigure affect the set's overall value?

🧱 Building Experience

AI-assisted build estimate, grounded in our LEGO database and public community discussions. How we use AI

🧩

445

Pieces

⏱

Estimated Build Time

📊

Beginner

Difficulty

👤

7-12

Ages

Build Highlights:

Fun and interactive build
Customizable features allow for different expressions
Easy-to-follow instructions
Playful design captures the essence of SpongeBob

📈 Investment Analysis

AI-assisted investment analysis, grounded in our LEGO database and public community discussions. How we use AI

↑ Trending up since release

Investment Grade

⏳ Retired

The Build-A-Bob set presents a moderate investment opportunity. Its status as a retired set from a popular licensed theme (SpongeBob SquarePants) contributes to its potential for appreciation. The set's unique concept and the inclusion of a Plankton minifigure add to its appeal among collectors. However, its relatively small piece count and focus on playability might limit its potential for significant value increase compared to larger, more complex sets. Investment potential is tied to the continued popularity of the SpongeBob franchise and the demand from nostalgic collectors. The rising price trend indicates growing interest, but careful monitoring of market trends is essential.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

📖 About This Set

Just when you thought things couldn't get any wackier in Bikini Bottom…Plankton has taken over SpongeBob's brain and is making him do some wild things! Plankton can make SpongeBob spin his eyes, shoot jellyfish from his mouth, and change SpongeBob's expression from a frown to a smile. Set includes Plankton minifigure, jellyfish to shoot and much more! SpongeBob measures over 11.5 inches (29.2 cm) tall! Includes SpongeBob comic strip on the box!

⚖ Compare Similar Sets

Krusty Krab Adventures

SpongeBob SquarePants • 297 pcs

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Undersea Party

SpongeBob SquarePants • 277 pcs

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Bikini Bottom Undersea Party

SpongeBob SquarePants • 471 pcs

$39.99

Compared to other SpongeBob SquarePants sets, Build-A-Bob stands out for its unique customizable figure. While sets like the Krusty Krab (3833-1) offer more of a traditional LEGO building experience with detailed locations, Build-A-Bob prioritizes playability and character interaction. Collectors interested in minifigures and iconic locations might prefer the Krusty Krab, while those seeking a more interactive and customizable model might find Build-A-Bob more appealing.

1 Minifigure Included

Plankton

5 parts

B+

The set includes a Plankton minifigure, which is a desirable character from the SpongeBob SquarePants series, adding to the set's collectibility.

📦 Parts Inventory

Official piece count: 445
Parts cataloged in this inventory: 93 unique parts, 440 pieces
Minifigures: 1

The official piece count includes the 5 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

Missing a piece? Check this set piece by piece, with look-alike colors flagged and element IDs for replacements.

Brick 4 x 6

Part #: 2356 2× Light Bluish Gray

Brick 2 x 2 Corner

Part #: 2357 4× Black

Tile Special 1 x ...

Part #: 2412b 3× Light Bluish Gray

Tile 1 x 4 with T...

Part #: 2431pr0028 1× Dark Bluish Gray

Brick Sloped Inve...

Part #: 2449 32× Yellow

Brick 2 x 6

Part #: 2456 7× Yellow

Brick 2 x 6

Part #: 2456 2× White

Brick 1 x 16

Part #: 2465 2× Yellow

Tile Special 1 x ...

Part #: 2555 2× Black

Brick Round Corne...

Part #: 2577 4× Black

Lever Small Base ...

Part #: 298c02 1× Red

Lever Small Base ...

Part #: 298c02 6× Black

Brick Special 2 x...

Part #: 30000 2× Blue

Brick 2 x 4

Part #: 3001 2× Light Bluish Gray

Brick 2 x 2

Part #: 3003 10× Yellow

Brick 2 x 2

Part #: 3003 4× Black

Brick 2 x 2

Part #: 3003 3× Light Bluish Gray

Brick 1 x 2

Part #: 3004 7× Dark Bluish Gray

Brick 1 x 2

Part #: 3004 6× Black

Brick 1 x 2

Part #: 3004 6× Reddish Brown

Brick 1 x 2

Part #: 3004 24× Yellow

Brick 1 x 1

Part #: 3005 8× Black

Brick 1 x 1

Part #: 3005 18× Yellow

Brick 1 x 6

Part #: 3009 26× Yellow

Brick 1 x 6

Part #: 3009 2× White

Brick 1 x 6

Part #: 3009 2× Black

Brick 1 x 4

Part #: 3010 5× White

Brick 1 x 4

Part #: 3010 14× Yellow

Brick 1 x 4

Part #: 3010 8× Reddish Brown

Plate 2 x 4

Part #: 3020 2× White

Plate 2 x 2

Part #: 3022 4× White

Plate 1 x 2

Part #: 3023 3× White

Plate 1 x 2

Part #: 3023 3× Yellow

Plate 4 x 4

Part #: 3031 2× Dark Bluish Gray

Plate 4 x 6

Part #: 3032 4× Yellow

Plate 6 x 10

Part #: 3033 3× Yellow

Plate 2 x 8

Part #: 3034 2× Dark Bluish Gray

Plate Round Corne...

Part #: 30357 4× Dark Bluish Gray

Brick Round 2 x 2...

Part #: 30367b 1× Yellow

Brick Sloped 45° ...

Part #: 3039 4× Black

Brick Sloped 45° ...

Part #: 3039pr0005 1× White

Brick Sloped 45° ...

Part #: 3040b 4× Black

Brick Special 1 x...

Part #: 30414 3× Red

Plate Round Corne...

Part #: 30565 4× Dark Bluish Gray

Brick Round Corne...

Part #: 3063b 8× Black

Tile 2 x 2 with G...

Part #: 3068b 2× Red

Tile 1 x 2 with G...

Part #: 3069b 2× Yellow

Tile 1 x 2 with C...

Part #: 3069bpr0030 1× White

Plate Special 3 x...

Part #: 3176 1× Yellow

Technic Axle and ...

Part #: 32013 1× Black

Technic Axle and ...

Part #: 32034 1× Black

Technic Axle 2 No...

Part #: 32062 1× Red

Technic Bush 1/2 ...

Part #: 32123a 2× Light Bluish Gray

Technic Gear 20 T...

Part #: 32269 1× Light Bluish Gray

Technic Gear 12 T...

Part #: 32270 2× Light Bluish Gray

Technic Gear 36 T...

Part #: 32498 1× Black

Brick Arch 1 x 6 ...

Part #: 3307 1× Yellow

Minifig Head [Pla...

Part #: 3626b 2× White

Brick Sloped Inve...

Part #: 3660 10× Yellow

Plate 1 x 6

Part #: 3666 1× Red

Plate 1 x 6

Part #: 3666 6× Yellow

Technic Brick 1 x...

Part #: 3700 8× Tan

Technic Axle 4

Part #: 3705 1× Black

Plate 1 x 4

Part #: 3710 1× White

Technic Axle 10

Part #: 3737 2× Black

Technic Axle Pin ...

Part #: 3749 2× Tan

Plate 2 x 6

Part #: 3795 4× Yellow

Plate 2 x 6

Part #: 3795 3× Reddish Brown

Plate 2 x 6

Part #: 3795 1× Red

Technic Brick 1 x...

Part #: 3894 1× Yellow

Hat, Chef / Baker

Part #: 3898 4× Trans-Clear

Hinge Brick 1 x 2...

Part #: 3937 1× Yellow

Hinge Brick 1 x 2...

Part #: 3938 1× White

Brick Round 2 x 2...

Part #: 3941 6× White

Brick Round 2 x 2...

Part #: 3941 6× Yellow

Plate 6 x 6

Part #: 3958 2× Reddish Brown

Dish 8 x 8 Invert...

Part #: 3961pr0011 2× White

Plate Round 2 x 2...

Part #: 4032a 2× Blue

Plate Round 2 x 2...

Part #: 4032a 3× Red

Plate Round 2 x 2...

Part #: 4032a 4× White

Brick Special 1 x...

Part #: 4070 6× Yellow

Plate Special 1 x...

Part #: 4081b 2× Red

Brick Wedged, Ang...

Part #: 41767 4× Black

Brick Wedged, Ang...

Part #: 41768 4× Black

Wedge Plate 4 x 2...

Part #: 41769 2× Dark Bluish Gray

Wedge Plate 4 x 2...

Part #: 41770 2× Dark Bluish Gray

Brick Curved 6 x 1

Part #: 42022 4× Black

Panel 1 x 4 x 1 w...

Part #: 43337 1× Dark Bluish Gray

Wedge Plate 3 x 2...

Part #: 43722 1× White

Wedge Plate 3 x 2...

Part #: 43722 2× Red

Wedge Plate 3 x 2...

Part #: 43723 1× White

Wedge Plate 3 x 2...

Part #: 43723 2× Red

Brick Curved 6 x 2

Part #: 44126 2× Black

Hinge Plate 1 x 2...

Part #: 44301a 2× Yellow

Hinge Plate 1 x 2...

Part #: 44302a 4× Yellow

Tap 1 x 1 with Ho...

Part #: 4599a 1× Light Bluish Gray

Dish 2 x 2 Invert...

Part #: 4740 1× Black

Technic Brick Spe...

Part #: 47431 2× Yellow

Technic Brick Spe...

Part #: 47454 2× Yellow

Technic Rotation ...

Part #: 47455 4× Yellow

Brick Round Corne...

Part #: 48092 4× Black

Technic Brick Spe...

Part #: 48169 2× White

Plate Special 1 x...

Part #: 48336 1× Black

Brick Curved 2 x ...

Part #: 6081 2× Yellow

Brick Curved 1 x ...

Part #: 6091 4× Yellow

Brick 1 x 10

Part #: 6111 4× Yellow

Brick 1 x 12

Part #: 6112 2× White

Brick 1 x 12

Part #: 6112 4× Reddish Brown

Plate Round 1 x 1...

Part #: 6141 1× Trans-Dark Blue

Plate Round 1 x 1...

Part #: 6141 1× Trans-Yellow

Plate Special 6 x...

Part #: 6178 2× Yellow

Brick Round 4 x 4...

Part #: 6222 2× Reddish Brown

Technic Axle 3 wi...

Part #: 6587 2× Dark Bluish Gray

Tile 1 x 6 with G...

Part #: 6636 4× Black

Technic Rubber Be...

Part #: 85545 1× Blue

🧱 Sticker Sheet for...

Part #: 56215 1× [No Color/Any Color]

This set is a great source of yellow LEGO bricks and slopes. The inverted slopes are particularly useful for creating unique shapes and details in MOCs.

🛒 Where to Buy

Bricklink

✓ In Stock

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$95.62

eBay

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💎 Notable Parts

Yellow Slope Inverted 75° 2 x 1 x 3 (32x) $4.80

Yellow Brick 1 x 6 (26x) $2.60

Yellow Brick 1 x 2 (24x) $2.40

Black Brick Round Corner 2 x 2 Macaroni with Stud Notch (8x) $1.20

Est. BrickLink Part Value

$11.00

💡 MOC Potential

🤖 Giant Plankton Mech

🌳 Bikini Bottom Diorama

🏙 SpongeBob's Pineapple House

Community Insights

Real opinions from Reddit and YouTube

What Reddit Says

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What YouTubers Say

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📖 Building Instructions 2

BUILDING INSTRUCT. 3826 VER29

Download PDF

BUILDING INSTRUC. 3826 VER 39

Download PDF

Inventory Statistics

Unique Parts

445

Official Piece Count

440

Cataloged Inventory Pieces

Minifigures

Spare Parts

The official piece count includes the 5 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.

Inventory Version: 1

Missing a piece? Use the Missing Piece Checker.