If you want to earn a skillcape in a single weekend, Construction is the fastest skill you can train in Old School RuneScape. That record-breaking speed comes with a huge price tag that catches many players off guard. Knowing the cost of reaching level 99 ahead of time keeps you from running out of GP halfway through your house upgrades. You can reach level 99 in just 11 to 13 hours of active play if you have the cash stack to back it up.
Reaching speeds over one million XP per hour requires building high-tier mahogany furniture with help from a Demon Butler. Between buying nearly 90,000 mahogany planks, paying sawmill fees, and tipping your butler, this route costs between 170 million and 195 million GP. Understanding these expenses ensures you spend your hard-earned coins wisely while building the ultimate Player-Owned House.
Key Takeaways
- Construction is the fastest skill to max in Old School RuneScape, reaching level 99 in just 11 to 13 hours using mahogany planks at a cost of 170 million to 195 million GP.
- Training with oak larders offers a budget-friendly alternative that cuts overall costs in half to roughly 80 to 85 million GP, though it extends training time to 30 to 33 hours.
- Choosing between oak and mahogany depends on your money-making rate, as earning over 5 million GP per hour makes mahogany’s massive time savings well worth the higher price tag.
- Always budget extra gold for your Demon Butler, whose mandatory fees add an additional 4.3 million GP for mahogany training or up to 9 million GP when training with oak.
The Mahogany Plank Route to Ninety-Nine
If you want the absolute fastest route to level 99 in Old School RuneScape, burning through mahogany planks is top tier. You can go from level 1 to level 99 in just 11 to 13 hours if you stay focused. To reach top speeds of 1.1 million experience per hour, grab roughly 85,000 to 90,000 mahogany planks for your bank. Start building mahogany tables at level 52, then switch to gnome benches or superior garden benches at level 77. Keeping a Demon Butler busy fetching planks from your bank keeps your training moving without any pauses.
- Total Time: 11 to 13 hours of active play
- Planks Needed: ~85,000 to 90,000 Mahogany Planks
- Estimated Cost: 170 Million to 195 Million GP
- Cost per XP: 13.5 to 15 GP/XP
Speeds like this come with a heavy price tag. Buying all those planks, paying sawmill fees, and tipping your Demon Butler sets you back 170 million to 195 million gold. That works out to roughly 13.5 to 15 gold per experience point, making it one of the most expensive ways to max a skill in OSRS. While oak furniture costs less than half as much, mahogany saves you over 20 hours of intense clicking. If you make high profits through bossing like Zulrah or Vorkath, spending extra gold on mahogany is well worth the saved time.
Experience rates jump dramatically as you level up. Moving from oak larders to mahogany tables at level 52 instantly doubles your hourly experience to around 900,000 XP per hour. Once you hit level 77, gnome benches unlock the fastest training speed in the game at over 1.1 million XP per hour. Managing your butler efficiently and using hotkeys for build prompts ensures you get full value from your gold. It requires fast clicking, but finishing your house in a single weekend feels amazing.
Mahogany Planks Versus Oak Larders Cost Comparison

If you want to save gold while still leveling fast, Oak Larders are the most popular budget option. Training with oak planks costs roughly 6 to 7 GP per experience point, bringing your total 1 to 99 cost down to around 80 million to 85 million GP. The main downside is the extra time, since Oak Larders top out around 400,000 to 430,000 experience per hour. You will spend about 30 to 33 hours clicking inside your Player-Owned House and sending your Demon Butler to the bank. It remains a reliable method that cuts your costs in half compared to mahogany.
Switching to Mahogany Tables and Gnome Benches doubles your speed, but costs far more. Mahogany furniture pushes your experience over 1 million XP per hour, letting you hit level 99 in 11 to 13 hours total. However, mahogany planks cost about 13.5 GP per experience point, raising your bill to 170 million or even 195 million GP. You are paying an extra 90 million to 110 million GP to save roughly 18 to 20 hours of building. For wealthy players, saving that time is easily worth the gold.
- Oak Larders: Costs ~80M to 85M GP total, yields 400k to 430k XP/hr, and takes roughly 30 to 33 hours to reach level 99.
- Mahogany Tables & Benches: Costs ~170M to 195M GP total, yields 900k to 1.1M+ XP/hr, and takes roughly 11 to 13 hours to reach level 99.
Choosing between these options comes down to how fast you earn GP. If you make 5 million GP or more per hour doing Tombs of Amascut or Theatre of Blood, buying mahogany planks saves you both time and overall profit. If your main moneymaking methods generate 1 to 2 million GP per hour, sticking with oak is much smarter. Check your bank balance and hourly income before buying planks in bulk. Saving 15 hours of clicking feels great, but keeping an extra 100 million GP in your bank might feel even better.
Factoring in Demon Butler Wages and House Fees
When rushing for level 99 Construction, the Demon Butler is essential. He brings 26 planks directly from your bank in just three seconds, letting you build mahogany tables or gnome benches without ever leaving your house. That speed comes with a continuous fee that many players forget to budget. Every eight trips he completes, you must pay him 10,000 GP. Delaying his payment stops your training immediately, so keep extra gold ready.
Reaching level 99 with mahogany requires around 90,000 planks. Since your butler carries 26 planks per run, he makes roughly 3,500 trips back and forth to your bank. That adds over 4.3 million GP in servant fees on top of your plank costs. Budget a bit extra for setting up essential rooms, moving portals, or rearranging your layout. Putting this cash directly into your Servant’s Money Pouch pays your butler automatically so your training stays fast.
Oak furniture costs less upfront in planks, but requires more than double the butler trips to reach level 99. Choosing oak increases your total servant fees to around 9 million GP because of those extra runs. Players focused on the fastest XP rates usually accept higher plank costs because of the time saved. Just make sure your bank covers both plank costs and butler fees before you start building.
How Much the Fastest 99 Construction Costs You
Maxing Construction in Old School RuneScape comes down to choosing between your time and your bank balance. If you take the fastest route with mahogany tables and gnome benches, you can hit level 99 in 11 to 13 hours. That top speed carries a heavy price tag of 170 million to 195 million GP for planks and butler fees. Burning through roughly 90,000 mahogany planks takes a large cash stack, making it a luxury method for wealthy accounts.
If you have a moderate budget, oak larders or oak dungeon doors offer a cheaper option. Training with oak cuts overall costs in half, though it doubles or triples your time spent building. Spending 30 to 40 hours making oak furniture takes longer, but saves tens of millions of GP for high-tier gear like a Bandos chestplate or skills like Prayer. Weighing your hourly money-making rate against how fast you want your skillcape makes picking a method simple.
No matter which plank you choose, doing the clicking yourself keeps your account completely safe while earning your cape. Shortcuts like account sharing pose huge security risks to your hard-earned progress. Earning your skillcape yourself guarantees your high-level house stays safe for all your future bossing teleports. Check your bank balance, pick the plank that fits your wallet, and start building your house today.

