A character can design a building if he/she makes a dice roll using his/her Engineering (including architecture specialism) + IQ. The dice roll result determines how good the design is, as follows:
| Dice roll result | Meaning |
| 3 or lower | Abysmal design - buildings made this way are likely to fall down or have severe structural problems |
| 3 1/2 - 6 | Poor design - there are significant design faults - buildings built this way are likely to look worse, to have more structural problems and to be less usable than a normal building |
| 6 1/2 - 10 | Competent design - there are only minor design faults and so buildings are likely to work normally |
| 10 1/2 - 15 | Good design - buildings built to this design are likely to look better, less likely to have structural problems and more likely to be usable than a normal building |
| 15 1/2 or more | Excellent design - buildings built to this design are likely to look very good, unlikely to have structural problems and likely to be very usable |
A character work off a design to construct a building to plan. Every day of construction, each person involved in the construction makes a dice roll using his/her Engineering (including relevant construction specialisms) + ST, to determine their contribution to the building work.
If the labour is directed by an overseer, the labouring character may use the overseer's Engineering skill score instead of his/her own in the dice roll. An overseer can direct the labour of up to a number of people equal to his/her Engineering skill score at one time.
The dice roll result determines the quality of the work carried out that day, as follows:
| Dice roll result | Meaning |
| 3 or lower | Abysmal work - that part of the building may fall apart before completion or does not work |
| 3 1/2 - 6 | Poor work - that part of the building looks worse, is more likely to have structural problems and works less well than a normal building |
| 6 1/2 - 10 | Competent work - that part of the building is normal quality |
| 10 1/2 - 15 | Good work - that part of the building looks better, is less likely to break and works better than a normal building |
| 15 1/2 or more | Excellent work - that part of the building looks very good, is unlikely to break and works very well |
For a large building, the overall quality of the building is determined by averaging out all the building contributions made by the individual labourers.