Questions about floor plans and layouts

1. I’m honestly stumped on how they plan to handle the discrepancy in square footage caused by this new way of calculating net usable area under the current building standards. The old guidelines—which were basically carried over from those older US industrial norms—used to include reduction coefficients for things like loggias at 0.75 or balconies at 0.25. Now, since those aren't part of the equation anymore, you could end up in a weird spot where the exact same apartment shows a larger usable area on its title than an identical one calculated before this standard kicked in. It just seems like a massive headache, I guess.

2. Also, does anyone actually know who is legally authorized to draft these floor plans for common areas or detailed floor layouts? As far as I can tell, there isn't any clear regulation on who is allowed to produce them, nor is there much specific guidance on what exactly needs to be included in their content. It feels a bit like the Wild West, maybe.

1. I came across this regarding the coefficients, though I’m honestly not sure if it actually addresses what you were asking...
2. It says right here in the third section of the introduction, and since they cite the specific laws there, you might want to dig into those just to be absolutely certain...

Thanks.
The group of court experts is also citing that old standard, ANSI 9836:2002, which isn't even in use anymore—just like that other outdated ANSI standard (I can't recall the exact number, but it doesn't really matter since it's been repealed). Both of them used to define how coefficients were applied.
So, now that those coefficients are gone, you end up with totally different Net Usable Area values compared to what you would have gotten for the exact same apartment just a few years ago. I guess things have changed.

Regarding question number two, I actually managed to find the answer in the middle of looking through an official opinion from the Department of Housing, class: 360-01/12-02/79.

As for the text under point two—the part about creating floor plan layouts being the job of a surveyor like Dave Bubati—that's honestly pretty outdated. The building codes have been overhauled so many times lately that the floor plan layout isn't even considered a core part of the main project anymore. You can actually see that sequence of events reflected in this legal opinion.

Basically, the opinion says that if a draft doesn't have a specific mandated name, there’s nothing stopping it from being called a "special parts plan," and it can be drafted by someone who isn't even a licensed architect. But, since making such a drawing requires specialized architectural or civil engineering knowledge, owners looking to establish condo ownership through written consent usually hire licensed architects, engineers, or other professionals with the right expertise. There's no rule against hiring specialized firms or people with the necessary credentials, provided they have the technical know-how.

So, to put it simply, anyone with the actual skill set can put together a floor plan layout.

The only real issue is that hardly anyone knows how to do it correctly anymore because they keep confusing basic principles with obsolete industry standards.

How is the final square footage actually calculated? According to my records at Google, I have at least 150 extra square feet more than what I actually have in my unit.
They’re counting my covered patio as if it were full living space, and there's a balcony listed in the building permits that doesn't even exist in reality.
What's the move here? This is an apartment in a condo complex—can I request a re-survey of just my specific unit?