A full set of construction items can dramatically reduce your build time in Game of War: Fire Age. You should aim to build a construction set as soon as possible and equip your set just before you start building or upgrade a building.
Note that you do not need to keep the construction set equipped; this is because the build time is only calculated at the point of upgrade or build. You are then free to remove your construction bonus equipment, whilst still maintaining the reduced build time.
In almost all instances you will need one or more parchments to craft construction boost items. Parchments can be tricky to obtain in large numbers as they are usually found whilst gathering on food tiles. This can be problematic as many players have an excess of food and generally only harvest wood, ore or stone. On the flip side, because of this there are usually plenty farms free to harvest.
Level 5 and 6 farms have the highest change of granting a parchment and generally at a higher level than lower farms. You can also obtain parchments from quests and material chests, but the chances of obtaining a parchment are lower as all the other materials can also drop.
There is only one helmet that has a construction bonus and that is the level 8 Veil. As this only provides a 3.6% bonus at blue quality and maxes out at 5.4% for orange, it is probably not worth wasting your materials on. However, if you are a min/max player then you will need a veil to max your construction boosts.
The armor slot is even worse than the helmet with a single level 1 item “Clothes” offering a construction bonus. This gives a 4.4% bonus at blue quality and maxes out at 6.6% for orange. I would say this is worse than the Veil, even though it has a higher bonus, because it uses two valuable parchments.
Your parchments are much better used elsewhere. The stats and material cost is shown to the right for the orange quality.
For the most part your choices for foot armor are once again poor and limited. Sandals (level 1) and Cloth Boots (level 1) both provide a measly 2.2% boost at blue and 3.3% at orange. Slightly better are Trousers (level 2) and Cloth Leggings (level 2), which provide 2.4% at blue and 3.6% at orange.
Again these are a waste of materials unless you are trying to squeeze every inch of construction bonus out of your equipment. If you are then you should go for the Cloth Leggings as they require one less material to craft than Trousers.
There are two fairly good foot armor construction boost items, which are the Cargo Leggings and Glacier Wolf Pelt boots. Both of these provide a 9% boost at blue and 13.5% boost at orange. However, these require special items that could only be found during the fall 2013 and winter 2013 in game events, so for most players are not obtainable.
Yet again only one weapon has a construction boost which is The Mallet (level 15). This weapon provides a 10% boost at blue and 15% boost at orange. It does however require 2 parchments which you may wish to save for the accessory slot.
Now we get on to the good items and you can equip two accessories (or three if you have a 21 Stronghold!).
The accessory slot has a variety of construction items between levels 1 to 20, which give boosts between 1% and 15% at various qualities. However, it is not worth wasting your materials on these items as the really good boosts come from the level 25+ items.
Starting with the Scroll at level 25, this item grants a 14% boost at blue rising to 21% at orange. It does require two parchments, which you may wish to save for later items. In addition it provides a moderate silver production boost. Most players will want to wait a few levels and save their parchments.
Next is the Treatise, a level 30 item, also requiring two parchments. This provides a marginally higher boost than the scroll at 16% blue and 24% orange. However, this item also provides a large food boost which can be very useful (64% at blue and 100% at orange).
Moving on to level 35 is the mirror. This should be skipped for a pure construction set, as it provides a lower boost than the Treatise. However, it also adds a 22.5% boost to research speed at blue and 27% at orange. So if you are low on materials or item slots and wish to combine a research and construction item this is a valid option.
Finally at level 45 you have The Odyssey. This is the best construction item in the game, but offers no other boosts. At 33% for blue quality and a massive 49.5% at orange, two of these items will give you a significant reduction in build time. The downside is it requires three parchments, so consider this before using all your parchments in the early Levels.
For most players two treatises and a mallet, providing a 42% construction boost, will be a great start to reducing those lengthy construction timers. Later on crafting two Odyssey’s will boost this to 76% at blue and 95.1% at purple.
For those lucky enough to obtain enough orange materials this increases 114% for the three items at orange and 163.5% if you add a third Odyssey.
Add to this an orange Veil, Clothes and Cloth Leggings you will hit 179.1%. I imagine if you have got to this point you would have already maxed construction skills adding 105% and construction research adding 66%, thus giving you a massive 350.1% bonus to construction.