Builders

In Dawn of War, builders are units that can construct buildings, repair buildings and repair vehicles. Other than Necron, every race starts with one builder for free, and for those races it is recommended to buy an extra builder at the start of the game.

Builders have their own armour type, which makes them vulnerable to pretty much any weapon, including anti-tank weapons. The only exception in the Techpriest Enginseer, of the Imperial Guard.

Builders tend to cost near 100 requisition. This makes them expensive to lose and rebuild.

Builders Overview
Each builder is distinct with the aim of contributing to the overall feel of racial uniqueness.

Morale
All lone builders (not squad builders) take twice as much morale damage compared to most other units, with the exceptions: Squad builders take morale damage as normal, but recall that being in a squad makes them vulnerable to: Builder squads, i.e. Ork Grots and Necron Builder Scarabs, have a morale death of 100. Max morale 150.
 * Tau builder that lacks morale entirely.
 * Imperial Guard Enginseer takes normal morale damage, like other units.
 * Area of Effect morale damage, such as Flamers.
 * Morale death, from the loss of squad members.
 * Meaning that if they lose 2 squad members, then the squad morale breaks.

Orks

 * As each Grot has 48 HP, the Ork builder is uniquely susceptible to area of effect abilities, such as the Farseer's Storm or the Frag Grenade. HP can be further increased by armor upgrades to total amount of 445 HP per squad.
 * The Grot is by far the fastest builder, competing only with the Eldar builder's teleport.
 * The Grot is the only builder capable of contesting critical locations, by using the Grot Bomb.

Imperial Guard

 * The only builder which gets faster repair rates via the commander line of researches.
 * Has a superior armour type over the other builders, making it the hardest to kill.

Chaos

 * Forced Labour reduces HP per second while active, while dramatically increasing build speed for the duration.
 * From Tier 2, Chaos buildings provide a health regeneration aura.
 * This primarily benefits the builder, allowing you to use Forced Labour multiple times and aiding in timing window attacks.
 * Despite Chaos and SM being similar (they're both 3-pop elite MEQ races), the differences between the builders and build times influences a number of match ups subtly. Orks, for example, find it much harder to slay the SM builder compared to the Chaos builder. Whereas for Eldar there is not much of a difference.

Tau

 * The faster the builder, the greater chance it has of escaping.
 * The faster the builder, the faster it can reach the outer strategic points.
 * Having above 17 speed (the speed of Tactical Space Marines) is an advantage for this reason.
 * Tau builder speed is only exceeded by grots (and bonesinger via teleport).

Sight

 * Builders with Keen Sight are balanced by having inferior normal Sight.
 * SM and Chaos have inferior sight.
 * Grot has detection in Dowpro, whereas in the original it did not.

Vehicle Repair

 * Two builders can repair a vehicle for all races except the Imperial Guard (only one). However, the Imperial Guard builder's repair rate uniquely improves with researches.
 * Chaos Heretic's Forced Labour applies to repair rates, multiplying it by three.