Skip to content
Back of the Box Builds

Back of the Box Builds

LEGO Alternate Builds!

  • SETS
    • Adventurers
    • Aquazone
    • Belville
    • BATMAN™
    • BIONICLE
    • Building Set with People
    • Castle
    • Duplo
    • Fabuland
    • Harry Potter
    • Holiday and Event
    • LEGOLAND
    • Model Team
    • Pirates
    • Space
    • Star Wars
    • Technic
    • Train
    • Town
    • Universal Building Set
    • Western
    • More Sets
    • Misc
  • USEFUL LINKS
    • Submit Instructions!
    • New Instructions
    • New Official Sets
    • New Alternate Builds
    • Minifigs
    • Very Small Builds
    • Small Builds
    • Medium Builds
    • Large Builds
    • Extra Large Builds
    • How BOTBB was Built
  • THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP
Alternate Builds Extra Large Builds Harry Potter Harry Potter Alternate Builds Instructions Added Sorcerer's Stone 

4709 – Back B

June 12, 2024June 17, 2024 Master Builder 4844 Views

From: 4709: Hogwarts Castle
Name: The Boathouse 1
Instructions: View PDF | Download .io File

Contributions

  1. Name, PDF and .io file submitted on June 12, 2024 by: penumbra12
  • ← 4709 – Back A
  • 4709 – Back C →

You May Also Like

6823 – Back B

September 30, 2019October 25, 2021 Master Builder

2153 – Back A

May 11, 2026May 13, 2026 Master Builder

6970 – Inside D

January 20, 2021January 20, 2021 Master Builder

1416 – Back A

February 25, 2025February 25, 2025 Master Builder

6783 – Back D

May 8, 2022May 8, 2022 Master Builder

6344 – Back C

October 8, 2024October 8, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

924 (487): Space Cruiser
Classic Space Classic Space Sets Different Box Versions Different Set Numbers Jens Nygaard Knudsen LL Link Medium Builds Official Sets Space 

924 (487): Space Cruiser

January 25, 2022October 17, 2024 Master Builder

Year Released: 1979Designer: Jens Nygaard KnudsenBricklinkInstructions BOX NOTE – This set has a different bottom with alternates on the rest of

1371: Spinosaurus Attack Studio
Jurassic Park III Medium Builds Official Sets Studio Alternate Builds Studio Sets Studios 

1371: Spinosaurus Attack Studio

January 6, 2022June 4, 2024 Master Builder
6267: Lagoon Lock-Up
Daniel August Krentz Imperial Soldiers Medium Builds Official Sets Pirates Pirates I Pirates Sets 

6267: Lagoon Lock-Up

October 11, 2021July 29, 2023 Master Builder
1974-2: Flyercracker USA
Airport Bonus/Value Pack Sets Classic Town Official Sets Small Builds Town 

1974-2: Flyercracker USA

September 7, 2023September 8, 2023 Master Builder
4730: The Chamber of Secrets
Chamber of Secrets Extra Large Builds Harry Potter Harry Potter Sets Official Sets 

4730: The Chamber of Secrets

January 23, 2024January 23, 2024 Master Builder
6423: Tow-away Truck
Official Sets Town Town Jr Town Sets Very Small Builds Wrecker 

6423: Tow-away Truck

July 10, 2026July 10, 2026 Master Builder
6074: Black Falcon’s Fortress
Black Falcons Castle Castle Sets Daniel August Krentz Large Builds Official Sets 

6074: Black Falcon’s Fortress

October 14, 2021July 29, 2023 Master Builder
6615: Eagle Stunt Flyer
Airport Classic Town Official Sets Small Builds Town Town Sets 

6615: Eagle Stunt Flyer

January 5, 2022January 5, 2022 Master Builder
6135: Spy Shark
Aquashark Aquazone Aquazone Sets Official Sets Very Small Builds 

6135: Spy Shark

March 21, 2023March 21, 2023 Master Builder
6312: Straight Road Plates
Classic Town Official Sets Supplemental Town 

6312: Straight Road Plates

October 10, 2022October 10, 2022 Master Builder
7701: Grand Titan
ABCs Exo-Force Medium Builds Official Sets 

7701: Grand Titan

March 26, 2026March 26, 2026 Master Builder
7264: Imperial Inspection
Episode IV/V/VI Large Builds Official Sets Star Wars Star Wars Sets 

7264: Imperial Inspection

April 15, 2026April 15, 2026 Master Builder
6999: Cyber Saucer with Promotional Mask
Box Plus Mask Medium Builds Official Sets UFO UFO Sets 

6999: Cyber Saucer with Promotional Mask

December 16, 2025December 16, 2025 Master Builder
6431: Road Rescue
Official Sets Res-Q Small Builds Town Town Sets 

6431: Road Rescue

January 20, 2022January 20, 2022 Master Builder
6529: Ultra Light I
Airport Classic Town Official Sets Town Town Sets Very Small Builds 

6529: Ultra Light I

July 14, 2022July 14, 2022 Master Builder
5909: Treasure Raiders set with Mummy Storage Container
Adventurers Adventurers Sets Box Plus Desert Medium Builds Official Sets Storage Container 

5909: Treasure Raiders set with Mummy Storage Container

October 8, 2024October 10, 2024 Master Builder

BOXES

INSTRUCTIONS

FAVORITES

MINIFIGS

About This Site

Logo
There were once pictures of additional LEGO® builds on the back of set boxes. Written on the boxes was typically something about the endless building possibilities, "Build any of these exciting models with this set!" There were no instructions for these alternate builds, until now.

Sets

  • Adventurers
  • Aquazone
  • BATMAN
  • Bionicle
  • Belville
  • Building Set with People
  • Castle
  • Duplo
  • Fabuland
  • Harry Potter
  • Holiday and Event
  • LEGOLAND
  • Model Team
  • Pirates
  • Space
  • Star Wars
  • Technic
  • Train
  • Town
  • Universal Building Set
  • Western
  • More Sets
  • Misc

Useful Links

  • Submit Instructions!
  • New Instructions
  • New Official Sets
  • New Alternate Builds
  • Minifigs
  • Very Small Builds (<35 pcs)
  • Small Builds (<100 pcs)
  • Medium Builds (<200 pcs)
  • Large Builds (<400 pcs)
  • Extra Large Builds (>400 pcs)
  • How BOTBB was Built

In Honor of 1526

The classic space set that never was.

Copyright © 2026 Back of the Box Builds. All rights reserved. LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize, or endorse this site.