For Construction in OSRS , the usual temporary boost is up to +8 total : a +5 spicy stew plus the +3 crystal saw on furniture that uses a saw.

What that means

  • Crystal saw: always gives an invisible +3 Construction boost for sawable furniture.
  • Spicy stew: can boost Construction by as much as +5 , but it is random and can also lower your level.
  • Cup of tea: can give up to +3 , and it stacks with the crystal saw for a practical +6 on tea-compatible setup goals.

Common use cases

  • For many POH upgrades , players aim for 84 Construction and boost from there for max-house setups.
  • For furniture that requires a saw, the classic max boost is +8 with stew plus saw.
  • If the build does not use a saw, the boost ceiling is usually +5 from stew alone.

Quick answer

If you just want the number: Construction can usually be boosted by up to +8 in OSRS.