WeDo Flat-Roof House

• 6×Black Plate 2 x 16

Lay the six black 2x16 plates side by side, long edges touching, to make a 16 x 12 base. They stay loose until the first wall course locks them together, so build on a table.

Step done

• 4×Lime Technic Brick 1 x 2 with Hole
• 4×Lime Technic Brick 1 x 4 with Holes
• 1×Lime Technic Brick 1 x 16 with Holes

Build the bottom course on the back 8 rows of the base, leaving 4 rows in front for the garden. Leave the 4-stud gap in the front wall for the doorway. The front and back walls run the full width; the side walls fit between them.

Step done

• 4×Black Brick 2 x 2
• 2×Lime Technic Brick 1 x 2 with Hole
• 2×Lime Technic Brick 1 x 4 with Holes
• 2×Trans Light Blue Brick 2 x 2 Round without Reinforcement
• 1×Lime Technic Brick 1 x 12 with Holes

Start with a 2x2 brick on each corner, then the window bricks, then fill the gaps.

Step done

• 4×Black Brick 2 x 2
• 2×Lime Technic Brick 1 x 2 with Hole
• 2×Lime Technic Brick 1 x 4 with Holes
• 2×Trans Light Blue Brick 2 x 2 Round without Reinforcement
• 1×Lime Technic Brick 1 x 12 with Holes

Start with a 2x2 brick on each corner, then the window bricks, then fill the gaps.

Step done

• 6×Medium Azure Brick 1 x 2
• 6×Medium Azure Brick 1 x 4
• 1×Lime Technic Brick 1 x 8 with Holes

This azure course marks the floor between storeys. Over the doorway, use a lime 1x8 Technic brick instead: one of its holes carries the door axle. This time the side walls run the full depth and the front and back walls fit between them, so every corner overlaps the course below.

Step done

• 2×White Plate 2 x 2 Round with 1 Centre Stud
• 2×Medium Azure Brick 2 x 4
• 1×White Electric Power Functions 2.0 Hub with Battery Box
• 1×White Electric Power Functions 2.0 Medium Motor

Inside, behind the left half of the doorway, stack two azure 2x4 bricks (long side front to back) and put two white jumper plates on top. Set the motor on the jumpers with its axle hole touching the lintel's hole from inside. Stand the hub on its end on the right and plug in the motor.

Step done

• 3×Bright Light Orange Brick 2 x 4
• 1×Dark Bluish Grey Technic Brick 1 x 2 with Axlehole with Open Sides and Stud Blocker
• 1×Dark Bluish Grey Technic Axle 4 with Stop

Build the door on the table: two orange 2x4 bricks stacked, then on top a third orange 2x4 shifted one stud right and a grey Technic 1x2 with axle hole on the left. Push the axle with the stop through the grey brick, through the lintel's hole and into the motor.

Step done

• 2×Lime Technic Brick 1 x 2 with Hole
• 2×Lime Technic Brick 1 x 4 with Holes
• 2×Lime Technic Brick 1 x 16 with Holes

The front and back walls run the full width; the side walls fit between them.

Step done

• 4×Black Brick 2 x 2
• 4×Trans Light Blue Brick 2 x 2 Round without Reinforcement
• 2×Trans Green Brick 1 x 1 Round with Hollow Stud
• 2×Trans Red Brick 1 x 1 Round with Hollow Stud
• 2×Trans Yellow Brick 1 x 1 Round with Hollow Stud
• 2×Lime Technic Brick 1 x 2 with Hole
• 1×Medium Azure Brick 1 x 2
• 1×Lime Technic Brick 1 x 4 with Holes
• 1×Lime Technic Brick 1 x 8 with Holes

Start with a 2x2 brick on each corner, then the window bricks, then fill the gaps.

Step done

• 4×Medium Azure Brick 2 x 2
• 4×Trans Light Blue Brick 2 x 2 Round without Reinforcement
• 3×Medium Azure Brick 1 x 2
• 2×Trans Green Brick 1 x 1 Round with Hollow Stud
• 2×Trans Red Brick 1 x 1 Round with Hollow Stud
• 2×Trans Yellow Brick 1 x 1 Round with Hollow Stud
• 1×Lime Technic Brick 1 x 4 with Holes
• 1×Lime Technic Brick 1 x 8 with Holes

Start with a 2x2 brick on each corner, then the window bricks, then fill the gaps.

Step done

• 2×Medium Azure Brick 1 x 2
• 2×Lime Technic Brick 1 x 8 with Holes
• 2×Lime Technic Brick 1 x 12 with Holes

This time the side walls run the full depth and the front and back walls fit between them, so every corner overlaps the course below.

Step done

• 8×White Plate 1 x 4
• 6×White Plate 1 x 12
• 4×White Plate 1 x 6

Cover the top course with white plates running left to right: a 1x12 and a 1x4 in each of the first six rows (swap ends every row), then 6 + 6 + 4 in the last two.

Step done

• 12×Light Bluish Grey Tile 1 x 8

Lay the twelve grey 1x8 tiles front to back across the plates. They tie the roof rows together; a stud border is left showing around the edge.

Step done

• 4×Medium Azure Tile 1 x 2 with Groove
• 4×Bright Green Plate 2 x 2 Round with Axlehole
• 2×Bright Green Plant Grass Stem
• 1×White Electric Power Functions 2.0 IR Distance Sensor
• 1×Bright Green Plant Flower 2 x 2 Leaves
• 1×Red Plant Flower 2 x 2 with Solid Stud

Add the azure path, the round green lawn plates, the flower and the grass. Put the motion sensor in the front-right corner with its eyes facing the street, and run its cable under the door to the hub.

Step done