Image | Item No. | Description |
| 3600-1 (Inv) | Build Your Own House Tub 1201 Parts, 2005 Catalog: Sets: Creator: Basic Set |
| 6186-1 (Inv) | Build Your Own LEGO Harbor 248 Parts, 1 Minifigure, 2008 Catalog: Sets: Creator: Basic Set |
| 30564-1 (Inv) | Build your own Monster polybag 60 Parts, 2021 Catalog: Sets: Creator: Basic Model: Creature |
| 30563-1 (Inv) | Build your own Snail polybag 36 Parts, 2021 Catalog: Sets: Creator: Basic Model: Creature |
| 3826-1 (Inv) | Build-A-Bob 445 Parts, 2006 Catalog: Sets: SpongeBob SquarePants |
| 365-2 (Inv) | Build-N-Store Chest 333 Parts, 1 Minifigure, 5 Gear, 1990 Catalog: Sets: Universal Building Set: Basic |
| 385-2 (Inv) | Build-N-Store Chest 420 Parts, 2 Minifigures, 7 Gear, 1990 Catalog: Sets: Universal Building Set: Basic |
| 545-1 (Inv) | Build-N-Store Chest 404 Parts, 2 Minifigures, 5 Gear, 1990 Catalog: Sets: Universal Building Set: Basic |
| 565-2 (Inv) | Build-N-Store Chest 668 Parts, 2 Minifigures, 7 Gear, 1990 Catalog: Sets: Universal Building Set: Basic |
| 5610-1 (Inv) | Builder 19 Parts, 1 Minifigure, 2008 Catalog: Sets: Town: City: Construction |
| 952403-1 (Inv) | Builder with Cement Mixer paper bag 21 Parts, 1 Minifigure, 2024 Catalog: Sets: Town: City: Construction |
| 952401-1 (Inv) | Builder with Crane paper bag 25 Parts, 1 Minifigure, 2023 Catalog: Sets: Town: City: Construction |
| 952310-1 (Inv) | Builder with Digger paper bag 17 Parts, 1 Minifigure, 2023 Catalog: Sets: Town: City: Construction |
| 952102-1 (Inv) | Builder with Epic Digger foil pack 17 Parts, 1 Minifigure, 2021 Catalog: Sets: Town: City: Construction |
| 4226-1 (Inv) | Building Monsters 503 Parts, 2 Minifigures, 1998 Catalog: Sets: Universal Building Set: Classic Basic |
| 8040-1 (Inv) | Building Set 162 Parts, 1984 Catalog: Sets: Technic: Universal Building Set |
| 8050-1 (Inv) | Building Set with Motor 140 Parts, 1982 Catalog: Sets: Technic: Universal Building Set |
| 2950-1 (Inv) | Building Site 47 Parts, 3 Minifigures, 1993 Catalog: Sets: DUPLO: Toolo |
| 4177-1 (Inv) | Building Stories with NaNa Bird 379 Parts, 3 Minifigures, 1 Gear, 2001 Catalog: Sets: Creator: Basic Set |
| 4406-1 (Inv) | Buildings 498 Parts, 2004 Catalog: Sets: Creator: Basic Set: Building |
| 4118-1 (Inv) | Buildings, Mansions and Shops 361 Parts, 3 Minifigures, 2001 Catalog: Sets: Creator: Basic Set |
| 9331-1 (Inv) | BuildToExpress Set 197 Parts, 2009 Catalog: Sets: Educational & Dacta |
| 45110-1 (Inv) | BuildToExpress Set 188 Parts, 2 Minifigures, 2 Gear, 2012 Catalog: Sets: Educational & Dacta |
| 44025-1 (Inv) | BULK Drill Machine 101 Parts, 2 Minifigures, 2014 Catalog: Sets: Hero Factory: Heroes |
| 6658-1 (Inv) | Bulldozer 61 Parts, 1 Minifigure, 1986 Catalog: Sets: Town: Classic Town: Construction |
| 42028-1 (Inv) | Bulldozer 617 Parts, 2014 Catalog: Sets: Technic: Model: Construction |
| 60074-1 (Inv) | Bulldozer 376 Parts, 2 Minifigures, 2015 Catalog: Sets: Town: City: Construction |
| 60140-1 (Inv) | Bulldozer Break-in 540 Parts, 5 Minifigures, 2017 Catalog: Sets: Town: City: Police |
| 8147-1 (Inv) | Bullet Run 795 Parts, 2007 Catalog: Sets: Racers: Tiny Turbos |
| 41234-1 (Inv) | Bumblebee Helicopter 121 Parts, 3 Minifigures, 2017 Catalog: Sets: DC Super Hero Girls |
| 232-1 (Inv) | Bungalow 448 Parts, 1978 Catalog: Sets: Homemaker |
| 8205-1 (Inv) | Bungee Blaster 64 Parts, 1997 Catalog: Sets: Technic: Model: Race |
| 2854-1 (Inv) | Bungee Chopper 72 Parts, 1998 Catalog: Sets: Technic: Competition |
| 8202-1 (Inv) | Bungee Chopper 72 Parts, 1998 Catalog: Sets: Technic: Competition |
| 41087-1 (Inv) | Bunny & Babies 47 Parts, 2015 Catalog: Sets: Friends |
| 562202-1 (Inv) | Bunny Playground foil pack 24 Parts, 2022 Catalog: Sets: Friends |
| col07-3 (Inv) | Bunny Suit Guy, Series 7 (Complete Set with Stand and Accessories) 3 Parts, 1 Minifigure, 2012 Catalog: Sets: Collectible Minifigures: Series 7 Minifigures |
| 41022-1 (Inv) | Bunny's Hutch 37 Parts, 2013 Catalog: Sets: Friends: Animals Series 2 |
| 60214-1 (Inv) | Burger Bar Fire Rescue 312 Parts, 3 Minifigures, 2019 Catalog: Sets: Town: City: Fire |
| 6683-1 (Inv) | Burger Stand 61 Parts, 2 Minifigures, 1983 Catalog: Sets: Town: Classic Town: Food & Drink |
| 60404-1 (Inv) | Burger Truck 186 Parts, 2 Minifigures, 2024 Catalog: Sets: Town: City: Food & Drink |
| 6235-1 (Inv) | Buried Treasure 17 Parts, 1 Minifigure, 1989 Catalog: Sets: Pirates: Pirates I |
| 10133-1 (Inv) | Burlington Northern Santa Fe (BNSF) GP-38 Locomotive 400 Parts, 2 Minifigures, 2004 Catalog: Sets: Train: 9V |
| 3662-1 (Inv) | Bus 32 Parts, 2 Minifigures, 1987 Catalog: Sets: Fabuland |
| 379-1 (Inv) | Bus Station 154 Parts, 4 Minifigures, 1979 Catalog: Sets: Town: Classic Town: Traffic |
| 60154-1 (Inv) | Bus Station 313 Parts, 6 Minifigures, 2017 Catalog: Sets: Town: City: Traffic |
| 3719-1 (Inv) | Bus Stop 5 Parts, 1 Minifigure, 1987 Catalog: Sets: Fabuland |
| 3638-1 (Inv) | Buster Bulldog's Fire Engine 18 Parts, 1 Minifigure, 1983 Catalog: Sets: Fabuland: Fire |
| 3058-1 (Inv) | Busy City - Master Builders (Masterbuilders) 73 Parts, 1 Book, 2000 Catalog: Sets: Town: Town Jr.: Construction |
| 3187-1 (Inv) | Butterfly Beauty Shop 213 Parts, 2 Minifigures, 2012 Catalog: Sets: Friends |