So Im going to post what the guild hall needs here.

1269 Elderwood Planks
322 Mithril Ingot
340 Ectoplasm
76 Opal orbs
33 Leyline Spark <These are obtainable in Tangled Depths>
4 Celestial Insignias <Need 400 Tailor, 5 ectoplasm, 5 Gossamer patches, and a Charged Quartz*>
4 Celestial Inscriptions<Need 400 Weaponsmith, 5 Orichalcum inscriptions, 5 ecto, and a Charged Quartz>
20 Leyline infused tools <400 Weaponsmith, a Charged Quartz, a Leyline spark, an Orichalcum Pick, and 50 bloodstone>
5 Spiritwood Planks
30 Icy Runestones <Bought for 1g a piece in Frostgorge>
100 Silk
300 Cured Thick Leather Squares
152 PvP reward potions <obtained by completing PvP dailies>
25 Tomes of Knowledge <obtained by Black lion chests, Finishing Personal story, and PvP tracks>
10 Watchwork Portals
215 Softwood planks
11 Greenwood Planks

I left out anything needed for enhancements so we can focus on building the hall. You will need to buy the Celestial inscriptions and insignia off the Trade Post along with the Watchwork Portals.

*Edit* Post when you place stuff in!