Hingan House Roof (Kura-zukuri)

Taken all the way down to base materials, one Hingan House Roof (Kura-zukuri) is 3 crafting steps deep and needs 9 intermediates — Mortar ×15, Steel Joint Plate ×15, Cobalt Plate ×10 and 6 others — which resolve to 10 distinct raw materials totalling 315 units, plus 413 crystals.

That bill outweighs 13,595 of the 13,602 recipes tracked here and 1,438 of the 1,441 Armorer ones, and 337 recipes nest deeper.

Only 28 of those crystals go into the final step; the other 385 are burned by the intermediates, so the real crystal cost is 130 Fire Shard, 95 Ice Shard, 90 Wind Crystal and 4 other kinds.

The chain crosses four disciplines — Armorer to Lv 64, Blacksmith to Lv 64, Goldsmith to Lv 56 and Alchemist to Lv 20 — so no single class can finish it unaided.

All 10 raw materials are gathered, and not one of their spots is timed, so nothing in the tree waits on the Eorzean clock.

Of the intermediates, Cobalt Ingot has the widest use: 145 recipes call for it, spanning seven of the eight crafting classes.