OSRS Mahogany Homes Calculator
Plan how many complete contracts remain for a point goal and translate the count into session time using your measured pace.
Set activity assumptions
Estimated contracts
500 estimated minutes.
How it works
Mahogany Homes pays reward points for completed contracts, so the planning question is a ceiling division rather than an experience curve. This page converts a point gap into whole contracts and then into minutes at your own measured pace; it does not price planks.
Contract tiers and what changes between them
Contracts come from the foremen in Ardougne, Falador, Hosidius and Varrock, and each sends you to one house to repair or build several pieces of furniture. The tier sets the Construction level required, the plank consumed, and the points paid.
| Contract tier | Construction level | Plank used | Reward points | Contracts for a 740-point gap |
|---|---|---|---|---|
| Beginner | 1 | Plank | 2 | 370 |
| Novice | 20 | Oak plank | 3 | 247 |
| Adept | 50 | Teak plank | 4 | 185 |
| Expert | 70 | Mahogany plank | 5 | 148 |
Some repairs consume steel bars instead of planks and a contract can mix build and repair steps, so plank demand is a range rather than a constant. The tool therefore asks for effective points and leaves materials to the Construction skill calculator.
Interpretation thresholds
Three numbers make the output actionable. The ceiling: partial contracts pay nothing, so 184.9 and 185 contracts cost the same. The tier crossover: moving from four to five points removes exactly one fifth of the remaining contracts, so switching pays whenever an Expert contract takes less than 25% longer than an Adept one — a stopwatch question, not a wiki question. The pace floor: at five minutes per contract an hour yields twelve, so a 148-contract plan is about twelve and a half hours.
Worked example
Moving from 100 to 500 reward points at four points per contract requires 100 contracts, and at five minutes each the plan is about 500 minutes. Second worked example: a builder holding 260 points who wants 1,000 has a 740-point gap — ⌈740 ÷ 4⌉ = 185 Adept contracts, or 148 Expert contracts at five points. At 5.5 minutes either way that is 814 minutes against 1,018, so the tier change is worth about three and a half hours.
Interpreting the result
Start by checking that each field describes the same scenario as the result: levels are visible base levels, bonuses are entered separately, costs are per unit, and a one-in-X rate means one divided by X on each eligible roll. The calculator updates immediately and writes the complete input state into the address bar. “Copy link” preserves those assumptions; “Copy result” copies a short summary rather than the entire method.
Do not treat a rounded count as an hourly rate. A required-action total says how many successful units complete the target under the entered reward. Banking, movement, failed attempts, animation timing, missed ticks and setup changes affect elapsed time. When time matters, measure a representative session with the same method and divide the required count by the observed successful actions per hour.
Economic outputs are arithmetic scenarios rather than live market quotations. Check current item values before buying supplies, include any outputs that can be sold, and consider limits or low-volume price movement. Probability outputs describe repeated independent trials; they do not promise that a result arrives at the displayed attempt count. The visible formula is the authority for what this page includes.
Read this as a planning estimate. Game updates, equipment effects, failures, travel, downtime and live prices can move a real session away from the mathematical result. Check the inputs against the account and use the output as a reproducible baseline.
Questions about OSRS Mahogany Homes Calculator
Does contract tier change points?
Are planks calculated?
Can I enter fractional average points?
How many points does each Mahogany Homes contract tier give?
Where do I pick up contracts?
Does the calculator work out how many planks I need?
Sources
Mechanics and fixed tables were reviewed in 2026. Price-like inputs are user-controlled or approximate rather than live quotes. Source links name the public reference used for the page; the visible formula states the exact implementation.
- Old School RuneScape Wiki — Mahogany Homes — Contract tiers, Construction level gates, plank types, reward points per contract, and the four contract locations, reviewed 2026.
- Old School RuneScape Wiki — Construction — Skill context and level thresholds behind the tier gates, reviewed 2026.
- Old School RuneScape Wiki — Plank — Plank tiers referenced by the contract table, reviewed 2026.