The Dragon Lairshaping ability comes in 6 tiers. A new tier is earned every 20 levels. It is unconfirmed whether the tier of ability or the skill determines whether you can craft resources of a tier higher than your ability.
Dragon Lairshaping is most commonly used to craft the construction units needed to build a lair. To do so requires the use of the following crafting machines: Smelter, Stoneworking Pedestal, Essence Channeler, Crystalshaper.
Dragon Lairshaping uses the Lairshaping skill to determine crafting efficiency.