Buildings costs question

Quote from Deej93

I noticed that the fire station cost goes up after you have a certain amount built,
i was just curious if this is the same case with other buildings such as police and ambulance stations.

I was also curious is there a maximum amount that a fire station will cost? or is it a never ending increase in price?
Apologies if this has previously been brought up elsewhere.

It never ends going up but it does slow down around 1 million if i remember correctly. Police stations also go up after the same amount, Ambulance stations however dont go up and that is the same for all the other buildings.