You can try prefab houses like this https://www.facebook.com/p/Prefab-House-Mal...4/?locale=ms_MY

There is another one (Manufacturer? Reseller?) on Jalan Gasing, Petaling Jaya, but I can't find their website (I go past there so I have seen it)




Disclaimer : I have no experience with either one of these companies just pointing out some alternatives for you to investigate. Lots of them around. Also on Mudah and Carousell listed under "container house" or "container cabin"

Alternately, buy used containers and build your own. BUT I have made a cost analysis before of buying a 20' container, and then making it livable, and the price is more expensive than making a custom fabricated welded steel structure (also up to the equal livable condition as the container) if I do the fabrication myself.

It gets very hot inside in our weather

office work under sun is no choice/employer dont care / is best option for the site, ,it is this environment i got my feedback is hot.
sleep at night, as long as you ok i ok. if under sun all day, still will be baking inside and need strong AC to cool.

Get shipping quote first . Don't shock Pikachu if the shopping rate is 2-3time higher then the product .

Why u want to buy such container ?
The heat in Malaysia can make u go crazy

Where u intended to put this ?

Last check made local cheaper . K got one guy who do this thing one ma he got always share last time ..

Do you have construction time? If you do, then just build a shed style free standing roof, and then underneath build a room using partition drywall is the cheapest, and most builders in M'sia can do.

The advantage of the ready made units is that you put down and it is ready. Also can move in the future with minimum fuss.

I have a friend who's electrocuted working in a container office.