Rebuild the huge building floor by floor and explore its basement

The huge-building request in Sparkling Skylands is completed in stages with Tinkmaster. A full bag of materials is not enough: each floor also needs its own assigned Pokémon. Complete and report one stage before assuming the next construction has begun.

Build the three requested floors

1. For 2F, supply 25 Concrete, ten Glass, five Pokémetal and ten Iron ingots. Assign six Pokémon including Tinkmaster and start the construction through the kit.
2. For 3F, prepare 25 Concrete, ten Glass, ten Glowing stones and 15 Copper ingots. Bring Chef Dente from Rocky Ridges and assign ten Pokémon including her and Tinkmaster.
3. For 4F, deliver 40 Concrete, 15 Glass, ten Paper, ten Bricks and 20 Lumber. Bring Peakychu from Bleak Beach and assign 15 Pokémon including Peakychu and Tinkmaster.

Assign workers across several trips

The following group is limited to five, so deliver and assign helpers in waves until the construction roster is complete. Prepare paper through recycling and processed materials before the next floor. After 4F, investigate the rooftop Master Ball, then return to Professor Tangrowth in front of the building to finish the request.

Find the optional room below the street

Near the building, use the street manhole to descend into the service area. Follow the lower rail-lined passage and descend through the openings into the room with the Snorlax-shaped bed and laptop. Inspect the human record there. This basement is separate from the rooftop objective and the Pokédex-completion secret gate.