This has been a much requested post, it has just taken me a while to get all the information collected for it! This post shows how much it costs to build each workplace, the time it takes and how many sims are needed in your town as all three of these factors increase each time you build a workplace.
NOTE: this table included the profession workplaces (police station, movie studio and hospital) and Simtown High School.
|WORKPLACES BUILT SO FAR||TIME||COST (SIMOLEONS)||SIMS NEEDED|
|0||2 minutes 30 seconds||500||1|
|7||1 day 4 hours||20,000||12|
|8||1 day 8 hours||100,000||14|
|9||1 day 12 hours||150,000||16|
|10||1 day 12 hours||600,000||18|
|11||1 day 12 hours||1,000,000||18|
However some workplaces that you have to build during a quest do not follow this pattern, some may be completely different while others such as the Simtown Elementary take a certain amount of time to build and this doesn’t change but the cost and sims needed still increase each time you build a workplace.
Does building a workplace increase the price, time and sims needed for simtown businesses or houses? No, building a workplace only increases the requirements for building another workplace, it will not affect a business or house. If you build a business then the requirements will increase for the next business only and if you built a house only the time and cost for building a new house will increase.
You can find the table for Businesses here