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Universal Building Set

Universal Building Set

733-1·LEGO·1980·138 parts

Used Avg
$91.02
New Avg
$688.56
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About Universal Building Set

Universal Building Set (733-1) is a LEGO LEGO set from 1980 valued at $91.02 on BrickLink. It contains 138 cataloged parts. This set has been retired and is only available on the secondary market.

Seller notes

  • Sealed copies sell for $688.56 vs $91.02 used — a 657% premium. If you have this set new in sealed box (NISB), price it accordingly.
  • This is a vintage set (1980). Condition of the box and instructions significantly affects value. A complete set with original box and instructions can sell for well above the average.

Parts (138)

Plate, Modified 2 x 2 with Red Wheels with Black Tires 15mm D. x 6mm Offset Tread Small (122c01 / 3641)
Plate, Modified 2 x 2 with Red Wheels with Black Tires 15mm D. x 6mm Offset Tread Small (122c01 / 3641)
×2
Brick 2 x 4 without Cross Supports
Brick 2 x 4 without Cross Supports
×2
Brick 2 x 4 without Cross Supports
Brick 2 x 4 without Cross Supports
Brick 2 x 3 without Cross Supports
Brick 2 x 3 without Cross Supports
×2
Brick 2 x 3 without Cross Supports
Brick 2 x 3 without Cross Supports
×2
Brick 2 x 2 without Inside Supports
Brick 2 x 2 without Inside Supports
×2
Brick 2 x 2 without Inside Supports
Brick 2 x 2 without Inside Supports
×2
Brick 1 x 2
Brick 1 x 2
×23
Brick 1 x 2
Brick 1 x 2
×8
Brick 1 x 2
Brick 1 x 2
×4
Brick 1 x 1
Brick 1 x 1
×16
Brick 1 x 1
Brick 1 x 1
×4
Brick 1 x 8
Brick 1 x 8
×14
Brick 1 x 8
Brick 1 x 8
×4
Brick 1 x 6
Brick 1 x 6
×18
Brick 1 x 6
Brick 1 x 6
×6
Brick 1 x 4
Brick 1 x 4
×21
Brick 1 x 4
Brick 1 x 4
×4
Brick 1 x 4
Brick 1 x 4
×2
Plate 2 x 4
Plate 2 x 4
×4
Plate 2 x 4
Plate 2 x 4
×4
Plate 2 x 4
Plate 2 x 4
×4
Plate 2 x 3
Plate 2 x 3
×2
Plate 2 x 3
Plate 2 x 3
×2
Plate 2 x 2
Plate 2 x 2
×2
Plate 2 x 2
Plate 2 x 2
×4
Plate 2 x 2
Plate 2 x 2
×4
Plate 1 x 2
Plate 1 x 2
×4
Plate 1 x 2
Plate 1 x 2
×5
Plate 1 x 1
Plate 1 x 1
×5
Plate 1 x 1
Plate 1 x 1
×5
Plate 1 x 1
Plate 1 x 1
×5
Plate 4 x 12
Plate 4 x 12
Plate 4 x 6
Plate 4 x 6
Plate 4 x 6
Plate 4 x 6
Plate 2 x 8
Plate 2 x 8
×2
Plate 2 x 8
Plate 2 x 8
×2
Plate 2 x 8
Plate 2 x 8
×5
Plate 4 x 8
Plate 4 x 8
×2
Plate 6 x 8
Plate 6 x 8
×2
Plate 6 x 8
Plate 6 x 8
×2
Slope 45 2 x 4
Slope 45 2 x 4
×16
Slope 45 2 x 3
Slope 45 2 x 3
×4
Slope 45 2 x 2
Slope 45 2 x 2
×8
Slope 45 2 x 2
Slope 45 2 x 2
×3
Slope 45 2 x 1 without Bottom Tube
Slope 45 2 x 1 without Bottom Tube
×4
Slope 45 2 x 1 without Bottom Tube
Slope 45 2 x 1 without Bottom Tube
×4
Slope 45 2 x 4 Double
Slope 45 2 x 4 Double
×3
Slope 45 2 x 3 Double
Slope 45 2 x 3 Double
Slope 45 2 x 2 Double
Slope 45 2 x 2 Double
×2
Slope 45 2 x 1 Double without Inside Bar or Bottom Stud Holder
Slope 45 2 x 1 Double without Inside Bar or Bottom Stud Holder
×2
Slope 45 2 x 2 Double Convex Corner
Slope 45 2 x 2 Double Convex Corner
×8
Slope 45 2 x 2 Double Concave
Slope 45 2 x 2 Double Concave
×8
Slope 45 2 x 1 Triple without Inside Bar or Bottom Stud Holder
Slope 45 2 x 1 Triple without Inside Bar or Bottom Stud Holder
×2
Slope 45 2 x 1 Double / Inverted without Bottom Tube or Bottom Stud Holder
Slope 45 2 x 1 Double / Inverted without Bottom Tube or Bottom Stud Holder
×2
Brick, Round  1 x 1
Brick, Round 1 x 1
×4
Brick, Round  1 x 1
Brick, Round 1 x 1
×2
Tile 1 x 2
Tile 1 x 2
×4
Tile 1 x 2
Tile 1 x 2
×4
Tile 1 x 1
Tile 1 x 1
×3
Hook Plate, Modified 1 x 2 with Crane Hook Left
Hook Plate, Modified 1 x 2 with Crane Hook Left
Door 1 x 3 x 2 Right
Door 1 x 3 x 2 Right
Door 1 x 3 x 2 Left
Door 1 x 3 x 2 Left
Train, Track Rail Straight 16L with Slots
Train, Track Rail Straight 16L with Slots
×4
Slope 33 3 x 2
Slope 33 3 x 2
×3
Hinge Plate 2 x 4 - Male (Digger Bucket Holder)
Hinge Plate 2 x 4 - Male (Digger Bucket Holder)
Hinge Plate 2 x 8
Hinge Plate 2 x 8
Turntable 4 x 4 Square Base with (Same Color) Top (3403 / 3404)
Turntable 4 x 4 Square Base with (Same Color) Top (3403 / 3404)
Plate 1 x 8
Plate 1 x 8
×4
Plate 1 x 8
Plate 1 x 8
×4
Propeller 4 Blade 5 Diameter 5 x 5 with Center Hole for Rotor Holder
Propeller 4 Blade 5 Diameter 5 x 5 with Center Hole for Rotor Holder
×2
Plate, Modified 2 x 3 with Helicopter Rotor Holder
Plate, Modified 2 x 3 with Helicopter Rotor Holder
Plate, Modified 2 x 2 with Helicopter Tail Rotor Holder
Plate, Modified 2 x 2 with Helicopter Tail Rotor Holder
Wheel with Split Axle Hole
Wheel with Split Axle Hole
×10
Tire 24mm D. x 8mm Offset Tread - Interior Ridges
Tire 24mm D. x 8mm Offset Tread - Interior Ridges
×10
Crane Bucket with Spring and Yellow Handle (3489 / bb0217 / 3490)
Crane Bucket with Spring and Yellow Handle (3489 / bb0217 / 3490)
Plate, Modified 2 x 5 with Tow Ball Socket
Plate, Modified 2 x 5 with Tow Ball Socket
Brick, Modified 1 x 1 x 2 with Shutter Holder
Brick, Modified 1 x 1 x 2 with Shutter Holder
×2
Hinge Plate 2 x 4 - Female (Digger Bucket Holder)
Hinge Plate 2 x 4 - Female (Digger Bucket Holder)
Brick 1 x 3
Brick 1 x 3
×8
Brick 1 x 3
Brick 1 x 3
×4
Plate 1 x 3
Plate 1 x 3
×2
Plate 1 x 3
Plate 1 x 3
×4
Door 1 x 4 x 6
Door 1 x 4 x 6
×2
Technic, Gear 8 Tooth
Technic, Gear 8 Tooth
Technic, Gear 24 Tooth Crown - Not Reinforced
Technic, Gear 24 Tooth Crown - Not Reinforced
Slope, Inverted 45 2 x 2 with Flat Bottom Pin
Slope, Inverted 45 2 x 2 with Flat Bottom Pin
×2
Slope, Inverted 45 2 x 2 with Flat Bottom Pin
Slope, Inverted 45 2 x 2 with Flat Bottom Pin
×12
Slope, Inverted 45 2 x 1
Slope, Inverted 45 2 x 1
×8
Slope, Inverted 45 2 x 1
Slope, Inverted 45 2 x 1
×10
Plate 1 x 6
Plate 1 x 6
×2
Plate 1 x 6
Plate 1 x 6
×4
Technic, Pin without Friction Ridges
Technic, Pin without Friction Ridges
Slope 65 2 x 2 x 2 without Bottom Tube
Slope 65 2 x 2 x 2 without Bottom Tube
×4
Turntable 2 x 2 Plate with Light Gray Top (3680 / 3679)
Turntable 2 x 2 Plate with Light Gray Top (3680 / 3679)
Technic, Brick 1 x 2 with Hole
Technic, Brick 1 x 2 with Hole
×10
Technic, Axle  4L
Technic, Axle 4L
Technic, Axle  6L
Technic, Axle 6L
×5
Technic, Plate 2 x 4 with 3 Holes
Technic, Plate 2 x 4 with 3 Holes
×2
Plate 1 x 4
Plate 1 x 4
×2
Plate 1 x 4
Plate 1 x 4
×4
Technic Bush
Technic Bush
×2
Plate, Modified 2 x 2 with Tow Ball
Plate, Modified 2 x 2 with Tow Ball
Plate, Modified 2 x 2 with Tow Ball Socket, Short, 4 Slots
Plate, Modified 2 x 2 with Tow Ball Socket, Short, 4 Slots
Technic, Steering Pulley Large
Technic, Steering Pulley Large
Technic, Axle 10L
Technic, Axle 10L
Technic, Plate 2 x 8 with 7 Holes
Technic, Plate 2 x 8 with 7 Holes
Slope, Inverted 33 3 x 2 with Flat Bottom Pin without Connections between Studs
Slope, Inverted 33 3 x 2 with Flat Bottom Pin without Connections between Studs
×3
Technic, Axle  1L with Pin without Friction Ridges with Round Hole
Technic, Axle 1L with Pin without Friction Ridges with Round Hole
×6
Plate 2 x 6
Plate 2 x 6
×2
Plate 2 x 6
Plate 2 x 6
×4
Baseplate 32 x 32
Baseplate 32 x 32
Door 1 x 3 x 1 Right
Door 1 x 3 x 1 Right
Door 1 x 3 x 1 Left
Door 1 x 3 x 1 Left
Vehicle, Steering Stand 1 x 2 with Black Steering Wheel
Vehicle, Steering Stand 1 x 2 with Black Steering Wheel
Hinge Brick 1 x 4 Swivel Top
Hinge Brick 1 x 4 Swivel Top
×2
Hinge Brick 1 x 4 Swivel Base
Hinge Brick 1 x 4 Swivel Base
×2
Plate, Modified 1 x 2 with Bar Handles - Round Ends, Mid Attachment
Plate, Modified 1 x 2 with Bar Handles - Round Ends, Mid Attachment
×2
Window 1 x 4 x 3
Window 1 x 4 x 3
×4
Pane for Window 1 x 2 x 3
Pane for Window 1 x 2 x 3
×8
Shutter for Window 1 x 2 x 3
Shutter for Window 1 x 2 x 3
×4
Door 1 x 4 x 5 with 4 Panes
Door 1 x 4 x 5 with 4 Panes
Hinge Brick 1 x 2 Base
Hinge Brick 1 x 2 Base
×2
Hinge Brick 1 x 2 Top Plate
Hinge Brick 1 x 2 Top Plate
×2
Slope 33 3 x 6 with Inner Walls
Slope 33 3 x 6 with Inner Walls
Brick, Round 2 x 2 with Axle Hole
Brick, Round 2 x 2 with Axle Hole
×2
Bracket 2 x 2 - 2 x 2 with 2 Holes
Bracket 2 x 2 - 2 x 2 with 2 Holes
×2
Antenna 4H - Round Top
Antenna 4H - Round Top
Minifigure, Utensil Space Gun / Torch
Minifigure, Utensil Space Gun / Torch
Dish 4 x 4 Inverted (Radar) with Solid Stud
Dish 4 x 4 Inverted (Radar) with Solid Stud
Dish 8 x 8 Inverted (Radar) - Solid Studs
Dish 8 x 8 Inverted (Radar) - Solid Studs
Minifigure, Utensil Radio (Walkie-Talkie) with Compact Handle
Minifigure, Utensil Radio (Walkie-Talkie) with Compact Handle
Brick, Modified 1 x 1 with 3 Loudspeakers / Space Positioning Rockets
Brick, Modified 1 x 1 with 3 Loudspeakers / Space Positioning Rockets
×2
Minifigure, Utensil Tool Spanner Wrench / Screwdriver
Minifigure, Utensil Tool Spanner Wrench / Screwdriver
Brick, Modified 1 x 1 with Headlight
Brick, Modified 1 x 1 with Headlight
×2
Plate, Modified 1 x 1 with Open O Clip Thin (Vertical Grip)
Plate, Modified 1 x 1 with Open O Clip Thin (Vertical Grip)
×2
String Reel Winch 2 x 4 x 2 with Light Gray Drum
String Reel Winch 2 x 4 x 2 with Light Gray Drum
×2
String, Cord Thin (Undetermined Length)
String, Cord Thin (Undetermined Length)
×2

Common questions about Universal Building Set

How much is LEGO Universal Building Set (733-1) worth?

Universal Building Set sells for an average of $91.02 used and $688.56 new/sealed on BrickLink based on 6 months of completed sales. As a retired set, prices tend to hold steady or appreciate over time, especially for complete sets with original packaging. Actual prices vary with completeness — missing minifigures or key parts will lower the value.

Is LEGO Universal Building Set (733-1) retired?

Yes, Universal Building Set was released in 1980 and has been retired from retail for several years. Retired LEGO sets are only available on the secondary market through BrickLink, eBay, or other resale platforms.

How do I check if my Universal Building Set set is complete?

Use the parts list on this page to check every piece. For the minifigures specifically, you can use the brick'em scanner to identify each figure from a photo and confirm it matches what should be in this set. Missing pieces can be individually sourced on BrickLink.

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