Highland Mansion Roof (Wood)

Taken all the way down to base materials, one Highland Mansion Roof (Wood) is 3 crafting steps deep and needs 7 intermediates — Cobalt Joint Plate ×20, Mortar ×20, Cut Stone ×15 and 4 others — which resolve to 9 distinct raw materials totalling 280 units, plus 380 crystals.

That bill outweighs 13,588 of the 13,602 recipes tracked here and 1,549 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 40 of those crystals go into the final step; the other 340 are burned by the intermediates, so the real crystal cost is 100 Fire Shard, 100 Ice Shard, 60 Wind Crystal and 3 other kinds.

The chain crosses five disciplines — Carpenter to Lv 60, Armorer to Lv 44, Blacksmith to Lv 42, Goldsmith to Lv 30 and Alchemist to Lv 20 — so no single class can finish it unaided.

All 9 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.