Building
Upkeep Guide for Rust
Master building upkeep mechanics. Costs per tier, decay prevention, and strategies to keep your base alive.
Master building upkeep mechanics. Costs per tier, decay prevention, and strategies to keep your base alive.
Building upkeep drains resources daily. This is the hard constraint on base size. You cannot build larger than your resource farming can sustain. Understanding upkeep is more important than understanding raid costs because upkeep is what kills bases, not raids.
Every 24 hours in-game, your tool cupboard drains approximately 10 percent of your total building costs in materials. The game calculates the total resource cost to build every piece in your base, then drains that percentage daily.
Example: A small stone base costs 10,000 stone total to build. Your daily upkeep drain is 1,000 stone per day. A larger base costing 50,000 stone drains 5,000 stone per day. The percentage is fixed. The actual resource cost increases with base size.
This means base size is not just about raid defense or convenience. It is a resource sustainability problem. You can only build as large as you can farm resources to maintain. A 50-foundation base that decays because you cannot maintain upkeep is worthless. Build for what you can sustain, not for prestige.
| Building Tier | Daily Drain Rate | Resource Type | Example Daily Cost |
|---|---|---|---|
| Twig | Decays in 1 hour | N/A | N/A |
| Wood | 10% per 24h | Wood | 400-600 wood (small base) |
| Stone | 10% per 24h | Stone | 2,000-3,000 stone (small base) |
| Sheet Metal | 10% per 24h | Metal Fragments | 3,000-5,000 metal (small base) |
| Armoured | 10% per 24h | HQM | Very high, unsustainable for most |
Count every foundation, wall, door, floor, roof, and window in your base. Multiply the stone walls by 500 (stone cost per wall), metal walls by 1,000, and so on. Add them all up. That total is your build cost. Your daily upkeep is 10 percent of that.
A 2x2 stone base with stone walls, two doors, and a roof costs roughly 9,000 stone to build. Daily upkeep is 900 stone. With three furnaces processing ore, this is sustainable.
A 5x5 stone base costs roughly 25,000 stone. Daily upkeep is 2,500 stone. A small ore farm or quarry can handle this.
A 10x10 stone base with internal walls costs 60,000+ stone. Daily upkeep is 6,000+ stone. This requires serious resource farming to maintain.
A base with mixed tiers (stone outside, metal inside with TC protection) costs significantly more. Metal walls cost 1,000 stone equivalent per piece in drain. Five metal walls add 5,000 drain cost. Do not build with excessive metal unless you have significant farming infrastructure.
Decay begins immediately when your TC reaches zero. Outer walls show damage within 24 hours and collapse within 48 hours. Your entire base becomes lootable and raided. Prevent this by checking your TC every time you log in and refilling if below 75 percent.
To sustain your base, you need daily farming that covers your daily upkeep. Plan your time accordingly.
Small 2x2 stone base: 900 stone per day. One quarry or hand-mining for 15 minutes covers this.
Medium 5x5 base: 2,500 stone per day. Small quarry running 30 minutes or multiple hand-mining sessions.
Large 10x10+ base: 6,000+ stone per day. Requires dedicated quarry access or daily team farming rotations.
Bases with metal walls: Metal fragments cost more to farm than stone. A base with significant metal costs 5,000+ metal fragments daily upkeep. This requires serious ore farming and smelting time.
Group bases should assign one dedicated farmer per 5 players. This person focuses on resource farming. Without dedicated farmers, group bases decay quickly.
Build smaller. The simplest way to reduce upkeep is to build less. A 4x4 stone base costs 1/4 the upkeep of an 8x8 base. Two smaller bases in different locations cost less upkeep combined than one giant base.
Use stone for everything except critical areas. Stone is the most cost-effective tier. Metal and armoured upkeep costs add up fast. A stone shell with a metal TC room is sustainable. A fully metal base is not for most players.
Minimize internal walls. Each wall is material cost and upkeep. A base with minimal interior walls costs less upkeep than one with rooms separated by walls. Group functions instead of creating separate rooms.
Build vertically instead of horizontally. A tall tower uses fewer total walls than a wide compound. Vertical design is 30-40 percent cheaper to maintain.
Reduce door count. Each door costs upkeep. Combine rooms to eliminate internal doors. External doors are necessary, internal ones are pure cost with no defense benefit.
Refill your TC weekly, not daily. This saves trips and is more efficient. Keep your TC at 75 percent or higher at all times.
Plan your wipe goal before building. If the wipe lasts 3 weeks, calculate if you can maintain a huge base for 3 weeks. If not, build smaller.
Solo players should never exceed 8x8 stone. This is the maximum sustainable solo base size on most servers. Groups with dedicated farmers can go larger.
Assign rotation farming if in a group. Monday: major stone farm. Tuesday: wood collection. Wednesday: ore mining and smelting. This spreads work and ensures consistent upkeep.
Monitor your upkeep closely. Check your TC daily. If upkeep is dropping faster than expected, reduce base size. Do not let upkeep become a crisis.
Wipe day 1-2: Build a small 2x2 wood base with airlock. Upkeep is minimal. Do not worry about sustaining anything yet.
Day 3-4: Upgrade to stone. Expand to 3x3 if farming is going well. Upkeep is now 1,000-1,500 stone per day. One quarry can handle this.
Day 5-7: Stabilize at 4x4 or 5x5 stone. Upkeep is 1,500-2,500 stone per day. Establish farming routine. Do not expand further if you cannot sustain it.
Day 7+: If farming is stable, you can add metal TC room and expand slightly. Do not commit to full metal base unless you have serious ore farming.
See the tool cupboard guide for detailed TC placement and authorization management. See principles of building for base layout strategy.