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Author Topic: Population grows but no buildings in town  (Read 1662 times)

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Offline accord2 pt

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Population grows but no buildings in town
« on: December 20, 2017, 12:23:16 PM »
Hi, I have this problem. My cities keep getting more population but no new buildings are built )except in towns that already had buildings at game's beginning. Help?

Offline DrSuperGood

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Re: Population grows but no buildings in town
« Reply #1 on: December 20, 2017, 07:08:40 PM »
Is this a recent problem with nightly Simutrans? or is it happening with the last stable release?

Generally such behaviour is expected if the city area rectangle has expanded in such a way that it covers a lot of unbuildable area. The city will only expand its area rectangle if it is past a city building density factor. If the terrain is highly unbuildable, eg an L shaped island, then it might not be able to achieve this density factor and so the city will stop expanding its area. In such a case once all buildings have been built that it can for its current area population can keep growing but no new buildings will be made.

A sign of this happening is a city which has homeless people and is comprised entirely of maximum density housing. If one removes the obstructions it usually expands very quickly until there are no homeless people. Do be aware that ways, stops, runways etc all count as unbuildable land to a town so surrounding a city with rail can also prevent it from expanding.

Offline accord2 pt

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Re: Population grows but no buildings in town
« Reply #2 on: December 20, 2017, 07:28:07 PM »
Is this a recent problem with nightly Simutrans? or is it happening with the last stable release?

Generally such behaviour is expected if the city area rectangle has expanded in such a way that it covers a lot of unbuildable area. The city will only expand its area rectangle if it is past a city building density factor. If the terrain is highly unbuildable, eg an L shaped island, then it might not be able to achieve this density factor and so the city will stop expanding its area. In such a case once all buildings have been built that it can for its current area population can keep growing but no new buildings will be made.

This is happening in the steam version. I know that about obstructions, the weird thing is that these towns are in flat land with no obstructions. I have been using the game editor to add buildings, I waited 30 years and the said towns had not one building, yet population kept growing.

Offline Leartin at

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Re: Population grows but no buildings in town
« Reply #3 on: December 21, 2017, 08:13:24 AM »
You are probably in a desert, and there are simply no buildings available for that climate. Use the climate tools and change the ground to something green.