May I know if commercial property with 1st and second floor, can be modified to be stayed overnight and if it is legal?

No, not for these two purposes. Someone who rented it and use for residential and made complaint to Health department that the operation affected his health.

Wonder where and who to complain with for them to illegally stay over such shoplot?

Unless the owner have approval from the local authorities, they can't.

I have a unit on commercial which i convert to student dorm/living area. I need to send architect plan to local PBT and Bomba for approval.

As I know why the shoplot can't be used for residential, as it doesn't rumah emergency exit door at the belakang if it is 1st floor.

Basically no issue during MCO my experience staying at shop for over 2 year because afraid later announced lockdown again cannot go here and there very annoyed

Just hope there are no bistro or pub too close to your shop

Commerical shop lot area usually more break in than house need CCTV for monitoring and install the optional steel door behind the fireproof door way before has been done

Now parking problem 8am dbkl start working easily kena compound some app can be set auto pay once 8am for some reason this area they never come for over 2 year , parking spot if i wish park at the designated spot for easily monitor my vehicle through window must come down park again after 10.30pm public parking spot always full especially the place full of cafe , make sure vehicle old enough cheap enough without tinted heck too easily window break by thief

stay behind close to toilet backend usually more nosier
Than front, if staying front walking to toilet quite far , if staying front
Alot of noise from double parking horn, loud exhaust, well depends the area

I  don't drive the vehicle at all weekly i need to come down and start vehicle engine for charging battery , so i need bring the spare key as well once start use spare key lock the door go up 45 minutes later come down shut the engine off

Front and back window i need tinted so at night or morning i can looking through outside without paiseh , commerical area if someone looking through the window those people will look it back so awkward 🤣

shop during renovate already have a proper staff room can cook equip with cooking hood, can watching TV can fit 2 single size mattress and so on utility and activity

Now all i need go back home take all the clothing, buy a 2 new single size mattress, bring 2 PC and so on entertainment to shop

And shop electric bill monthly sure exceed optional RM 200 or 300

So really depends your purpose staying at shop

If you don't drive at all wakeup can straight to work without driving I guess very convincing but at the end house more convenient than staying at shop

Last 2 year my working vehicle side window break once at passenger side
Downstairs fireproof wood door has been break lucky there are last defense steel door can be lock from inside with optional lock

Any source to get this information as confirmed?