Regular: 100 GP, Oak: 250 GP, Teak: 500 GP, Mahogany: 1,500 GP per plank at the sawmill.
Buy on GE or chop yourself. Misc. Kingdom generates Teak/Mahogany logs passively.
Lunar spell at 86 Magic. Makes planks cheaper than sawmill — essential for ironmen.
Demon Butler un-notes 26 items per trip. Costs 10K to hire + 10K per 8 trips.
👆 Enter your values above and click Calculate to get your personalized results.
Calculate the exact materials you need for Construction training in Old School RuneScape. Get a complete shopping list of planks, nails, bars, and other items required for any training method and level range. or map out your route with the OSRS construction calculator.
Oak methods require the most individual planks, while Mahogany methods need fewer planks at higher cost per plank.
The Construction Material Calculator tells you exactly how many planks, nails, and other materials you need for your Construction training. Instead of guessing or over-buying, get a precise shopping list before you start.
See the total number of planks required for any method and level range. No more buying too many or too few.
Some methods require nails, bars, or other items. The calculator tracks all secondary materials too.
Get a ready-to-use shopping list showing every item and quantity you need to buy from the Grand Exchange.
| Plank Type | GE Price | Sawmill Cost | Log Source | Planks for 99 | Cost for 99 |
|---|---|---|---|---|---|
| Regular Plank | 459 GP | 100 GP | Trees (free) | ~449K | ~206M GP |
| Oak Plank | 586 GP | 250 GP | Oak Trees | ~217K | ~127M GP |
| Teak Plank | 1,122 GP | 500 GP | Teak Trees (Ape Atoll) | ~108K | ~121M GP |
| Mahogany Plank | 1,974 GP | 1,500 GP | Mahogany Trees | ~93K | ~184M GP |
Type your current and target Construction levels. The calculator computes XP needed and converts it to material counts.
Each method uses specific plank types and quantities. Selecting a method determines your shopping list.
The +2.5% XP bonus means you need fewer builds, which reduces total material requirements. Toggle it on if you own the outfit.
See every item and quantity in a ready-to-buy format. Copy the list for efficient GE shopping.
Over 59% of all planks are used in just the final 9 levels (90→99).
Buy planks directly from the GE. This is the fastest option. Buy limits: all planks have a buy limit of 13,000 every 4 hours. For large quantities, you may need to spread purchases across multiple sessions.
Buy logs and convert them at the Sawmill near Varrock, Prifddinas, or Woodcutting Guild. Costs: Regular 100 GP, Oak 250 GP, Teak 500 GP, Mahogany 1,500 GP per plank. Useful when plank prices are inflated.
The Plank Make spell converts logs to planks for runes + GP. Costs vary but can be cheaper than GE planks during price spikes. You earn Magic XP too. Requires Lunar spellbook.
Ironmen must gather logs themselves. Best sources: Teak trees at Ape Atoll or Fossil Island, Mahogany trees at Prif or Fossil Island. Kingdom of Miscellania produces teak/mahogany logs passively.
| Method | Plank Type | Per Build | Builds | Total Planks | Extra Items |
|---|---|---|---|---|---|
| 🪑 Crude Chair | Regular | 2 | 224,731 | 449,462 | — |
| 📚 Bookcase | Regular | 4 | 113,343 | 453,372 | Nails ×4 |
| 🗄️ Oak Larder | Oak | 8 | 27,155 | 217,240 | — |
| 🏛️ Mahogany Table | Mahogany | 6 | 15,517 | 93,102 | — |
| 🚪 Oak D.Door | Oak | 10 | 21,724 | 217,240 | — |
| 🧝 Gnome Bench | Mahogany | 6 | 15,517 | 93,102 | — |
| 🦸 Mythical Cape | Teak | 3 | 35,228 | 105,684 | — |
| 🏰 MH Expert | Mahogany | 6 | 6,362 | 38,172 | — |
Mahogany planks are the most expensive per unit, but Mahogany Homes Expert requires the fewest total planks.
Know the precise number of planks before you buy — no waste, no shortage.
Get a formatted list of every item you need for efficient GE purchasing.
See estimated material costs based on current GE prices.
Nails, bars, and secondary materials are calculated automatically.