Need these methods for 99 Construction, starting at lvl70:

 

 

 

Quickest?

 

Easiest?

 

Cheapest?

YOur best bet would probably be oak larders using a demon butler.

oak doors are slightly faster. (lvl 74)

Quickest? - Other than Mahogany, which isn't worth it even if you have the GP for it, oak larders and doors are the fastest (larders to 74, then doors)

 

Easiest? - What do you define as easy?

 

Cheapest? - Ponds or limestone fireplaces or something, lol. But that'd take several months.. in which time you could have earned the 70m or so already.

 

 

 

Basically.. just make oak larders/doors.

construction is most definitely not one of those cheap skills. oak larders or doors always work well for cheap and fast exp, as i am told.