Singapore extended visit

How long can one stay in Singapore without requiring a work visa or other such accommodation? Could you, for example, sublet an apartment for a summer, or even a year, and have access to insured medical services or other necessities during that time?
Edit: In response to the first comment I will attempt to clarify. I guess what I'm asking is how long does a tourist visa last, how many times can it be extended and how hard is that to do? Additionally, I am from the US.
Best Answer
In addition I'd like to point people to the following link: Visa Policy of Singapore
Western countries appear to be VISA free currently with either 30 or 90 day Visa's. If you want to save some money, you can simply travel to Malaysia by bus and returned to get another 30 (or 90?) days. I've done this several times although it might be best to stay a few days in the other country, I've returned on the same day before.
To travel to JB by bus the easiest way is to take the MRT to Woodlands terminal. Then take bus number 950 to JB. Don't forget to bring your passport. You can hop on the same bus number to return.
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Can I stay in Singapore for more than 30 days?
It is normally between 14 to 30 days. Regardless of the length of stay granted, visitors may request for an extension of stay by applying in person at the Immigration and Checkpoints Authority before the expiry of the visa granted.Can Singapore tourist visa be extended?
Answer: There is no need to apply for a new visa as long as your travel date to Singapore is within the visa validity period. 5. How can I extend my Visa? Answer: There is strictly no extension of visa validity or change of visa type.How long short term visitor can stay in Singapore?
If you are allowed to enter, they will give you a Singapore Short-Term Visit Pass, which states the number of days you are allowed to stay. This is typically between 14-30 days.How do I get a long term pass in Singapore?
Eligibility for Long Term Visit PassHow to Extend Visit Pass / Tourist Visa for 30 Days in Singapore ICA 2022
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Images: Mateusz SaĆaciak, SHVETS production, mentatdgt, mentatdgt