Buildings represent the infrastructure and development of a province. Investing ducats into buildings can give steady returns over the decades and centuries to come.
- 1 Building slots
- 2 Building categories
- 3 Cost
- 4 List of normal buildings
- 5 List of native buildings
- 6 Building strategy
- 7 References
Adding a new building requires one free building slot. Some buildings can be upgraded as technology advances. These upgraded buildings don't require an additional slot, and the existing building can be upgraded on the same slot. The maximum number of building slots a city can have is 12, although there are only 11 possible categories of buildings.
The number of slots a province provides is mostly influenced by terrain and total development of the province:
|+1||Terrain is drylands|
|+1||Terrain is farmlands|
|+1||Terrain is grasslands|
|+1||Has a university|
|+1||Per 10 development in province, rounded down.|
|−1||Climate is Arctic|
|−2||Is not a core|
Note: The University can be thought of as not occupying a slot. In case there are no available slots the University will in fact occupy the future slot it is supposed to provide (prior to Patch 1.15 the player would have had to remove a building, build the University, and then rebuild the original building).
Example: If Paris is a city, a core of France, has farmlands terrain, a temperate climate and 32 development, then:
These represent common buildings that the player can construct in every province. Buildings are divided into seven categories: government, army, navy, production, trade, defense and taxation.
Each category contains various amounts of buildings. Most of the buildings have an advanced version, but some (for example University) take one slot and can't be replaced by something better. It's not necessary to build a basic building before constructing the more advanced version, although the cost of the basic building will be deducted from the cost of the advanced one.
Manufactories are proto-industrial buildings in that their unique function is the increased production of a specific class of trade good. For example, the weapons manufactory is only constructable on provinces that produce iron or copper. For a list, see below. Each manufactory is essentially the same as any other, except that they are unlocked at different levels and categories of technology. However, there is no manufactory for gold-producing provinces and furnaces, which can be built on coal-producing provinces, will increase the production of all trade goods.
Native American nations get a unique set of buildings that completely replace the usual buildings as long as they have the Tribal Council government. All buildings can be built without technological requirements unlike normal buildings and their effects are different from the normal buildings. Any native buildings built will be lost when the government is reformed.
All buildings cost time and ducats to build. The cost of a building is reduced if a building that precedes it (meaning, it is an upgrade) is already built in the province; though the time requirement is not affected by this.
Construction cost is modified by the following:
|−20%||with the native administrative idea “Migrative Traditions”|
|−15%||with Jacobins faction in power as Revolutionary Republic|
|−15%||with Seize Clerical Holdings action as Feudal Theocracy|
|−10%||with Ganga as personal deity (for Hindu nations)|
|−10%||with Snotra as personal deity (for Norse nations)|
|−10%||with bureaucrats faction in power as Celestial Empire|
|−10%||with guilds faction in power as Merchant Republic|
|−10%||with the ‘Architectural Visionary’ ruler personality|
|−5%||with the imperial reform “Call for Reichsreform” (for HRE members)|
|−5%||during parliament issue “Appropriate Land for the State”|
|−5%||after embracing the Renaissance institution|
|+1%||for each percentage point of inflation|
|+10%||with the ‘Obsessive Perfectionist’ ruler personality|
Ideas and policies:
Decisions and events:
|−20%||Golden Age Transylvania||Transylvania event (only with Art of War enabled): “Golden Age of Transylvania”||for 15 years|
|−20%||Fernandino Construction|| Tuscany event: “The Construction Projects of Fernando I”
||for 10 years|
|−10%||Elizabeth Wilbraham|| England / Great Britain event: “Elizabeth Wilbraham”
||for 20 years|
|−10%||Hanseatic Economic Reform|| Lübeck event: “Tagfahrt”
||until ruler changes|
|−10%||Mimar Sinan|| Ottomans event: “Mimar Sinan's Great Constructions”
||until ruler changes|
|−10%||Srishti||Hindu event: “Srishti: Creation”||until ruler changes|
|−5%||Construction Wages|| Colonial nation event (only with Conquest of Paradise enabled): “Wage Laws for Builders”
||for 3 years|
|+10%||Mint Money|| Revolution disaster event: “The Road to Bankruptcy”
||until end of disaster|
|+20%||Berliner Unwille stopped|| Brandenburg event: “Berliner Unwille”
||until ruler changes|
List of normal buildings
- Main article: Land warfare#forts
The Defense type building (fort) has a base construction time of 30 months. Forts resist enemy occupation and must be sieged down. They also hinder enemy movement in the surrounding provinces during war, recapture neighboring unfortified provinces, and reduce devastation in neighboring provinces.
|Category||Tech||Normal buildings (tech required)|
Upgrades Star fort
All manufactories cost 500 ducats, have a base construction time of 60 months and provide +1 local goods produced (except Furnace) or +5% global goods produced (Furnace). A manufactory can only be built in a province which has its associated trade goods present.
List of native buildings
All native buildings cost 50 ducats and have a base construction time of 12 months. It is only possible to build one of each unique building per nation. All native buildings are lost after reforming the government.
Normal native buildings
|Earthwork||+25% Local defensiveness|
|Great Trail||+50% Local manpower modifier|
|Irrigation||+50% Local tax modifier|
|Storehouse||+50% Local production efficiency|
|Three-Sisters Field||+50% Local goods produced|
Unique native buildings
|Ceremonial Fire Pit||−50% Advisor cost|
|Fortified House||+10 Land force limit|
|Longhouse||+1 Tax income|
|Sweat Lodge||+1 Diplomatic reputation|
There are some general rules of thumb that should be taken to heart when investing in buildings:
- Money should be invested in buildings only if it isn't needed for something more important.
- The time needed to generate a profit should be noted; some provinces may be too poor to ever generate a profit in the remaining time-frame.
- When considering a large building spree it might be advisable to invest in the Economic idea group and couple it with policies to reduce the building costs.
- It's good to remember that besides local autonomy, province income can also be affected by the province's culture and religion (if different than the state religion).
- Space is limited. The number of buildings can only be increased by coring a province, or increasing the development level. (Corollary: increase development to open more spaces.)
Buildings' positioning can have great effect on return-on-investment. It is thus recommended to build the following building types in the appropriate provinces:
- Buildings providing a percentile bonus are best built in state provinces with high development values, low local autonomy, and targeted to increase the province's strength(s), e.g., trade buildings in provinces with modifiers benefiting local trade power (such as centers of trade).
- Buildings providing a flat bonus are best built in territorial provinces as they won't be affected by the high autonomy, or in state provinces with low development values.
- While less beneficial to all types of development, coupling a building with the right estate can boost a single type of development very high: not only do they negate local autonomy on some modifiers depending on the estate, but some give bonuses to them as long as they're happy. For example, Burghers and Dhimmi boost trade power and local tax respectively.
- Manufactories increase local goods produced, which in turn also increase both the province trade value and its production income. In addition, coupling them with production buildings in state provinces with high value trade goods will generate high production income.
- Manufactories are not affected by autonomy, culture, and religion as other buildings. Thus, they can be built even in high autonomy provinces. While the generated production income may not be at its fullest, they can still return the investment when also taking into account the generated trade income.
- Prioritize building forts in provinces with defensive terrain or those with low supply limit to couple them with the local defensiveness and high attrition bonuses, and to make sure you get a terrain bonus to help break sieges. If possible, they should be built mostly in border provinces and mothballed until needed.
Considering that buildings cost money, their cost-benefit ratio should be considered. Thus, an important step is to know when not to invest in a building type:
- Trade buildings are unnecessary in trade nodes dominated by the nation, and you don't need more trade power propagated upstream.
- Army/Navy buildings can be avoided if the nation maintains large forces and there are no nations of similar or stronger power.
- Due to forts' initial high cost and ongoing fort maintenance, it's best to avoid building them in the inner provinces of the nation where they are far from enemy borders and forces. If the area is prone to rebellions, several low level forts might be more successful in slowing the rebels down until other forces arrive.
- If playing as a native tribe and planning to migrate, it is not advisable to build buildings unless necessary for immediate survival, as buildings are destroyed upon migration.
Occasionally it is beneficial to destroy a building:
- Excess forts cost money to maintain even when mothballed. Forts that aren't strategically useful - those in the interior if the enemy never reaches it, or multiple forts in a small space after annexing several small countries, for example - can be worth destroying.
- Occasionally a building other than a fort was useful when built, but becomes a waste of a slot due to changing circumstances.
Is borrow-to-build worthwhile
Is it worthwhile to take out loans in order to construct a certain building? Or, equivalently, if there is an on-going loan, should the loan be paid off first before initiating on any construction project? Just like in real life, theoretically, the answer is yes if the income provided by the building per year divided by the sum of build cost and interest accrued during construction is higher than interest per annum. This can be the case for highly developed provinces or for manufactories in a highly productive province that produces expensive trade goods. (For manufactories, the player should also include trade income.) However, the player would also need to make sure there is enough income to pay off the loan before inflation gets out of hand. A safe guide is whether the income before constructing the building is able to cover the principal part of the loan within a reasonable time frame.
When will increased income cover building costs
The increase in income is dynamically influenced by provincial and national modifiers such as tax efficiency, production efficiency as well as the development in the province, all of which are bound to increase as technology progresses. Therefore, early game, whether a building will pay for itself is not usually the question. The question is how long and thus if the ducat can be better spent elsewhere. The following table lists the required increase in monthly income (displayed in-game in the building interface) for a certain number of years before the building breaks even.
The benefits of manufactories are two-fold: one is through local production; another is through trade collection. Trade collection is influence by multiple factors: price of trade good, trade company bonus, player's share in trade power where the goods value is collected, and whether there is any transferring bonus (if collected in a downstream trade center). Assuming no trade company and 100% share in trade, the required increase in monthly income (displayed in-game in the building interface) for a certain number of years before the building breaks even is listed as follows.
The required income is higher for a given schedule if the player cannot fully collect on the value of the trade goods. At the same time, any trade efficiency bonus reduces the required monthly income increase or bring closer the time the building breaks even.
As with other buildings, the increase in income from manufactories also scales with game progress although with the added sensitivity to the price of trade goods. Certain trade goods decrease in value late in the game. See Trade goods strategy.
- Specified in .
- Specified in and respectively.
- Forum, ROI on Buildings (spreadsheet), 2017-02-05