Well, first of all, what I said about the national contract in general is indeed true (the one part of my commentary that you quoted, and your first comment was that this is not true). Anything that is in the national contract (or national law) cannot be overwritten or opposed by a contract between two individuals. Period The portion of the contract that is not in agreement with a part of the national contract that has been defined is indeed null and unenforceable. This is the law and is not a custom.That's not true. It is a custom, but not a law. What the contract says is what is valid in regard to extraordinary expenses. If no distinction is made in the contract, then the tenant has to pay for them.
You may have meant to say that the extraordinary expenses, the renter not paying those, is merely a custom, but that is not true either, unless the law has explicitly changed this year (when they made changes to rental contracts) in regard to that (but I don't believed that changed). In a country where the owner is always on the defensive and the "masses" always are favored, I don't believe they would change the law to stipulate that the (proverbial "evil") owner can now charge the renter to pay for improvements to the land or building that would raise his/her property values, which is how extraordinary expenses are defined.
A quick check on Google and I came back with this article.
http://www.orientaci...dos.com/?p=1050
At the end of the article:
En conclusión: no corresponde al inquilino el pago de expensas que importen mejoras y por tanto incremento del valor del inmueble. Sí en cambio le corresponderán las de mantenimiento y conservación.
The expenses they are talking about that the renter is not responsible for are "extraordinary expenses". This is a legal website, although they do not quote the national law under which they are making the claim. They are not saying that it is up to the contract signed between owenr and renter, but it is stated without reservation that they are not responsible for it.
I believe that this is actually a part of the national renters' contract, though am not 100% for sure - it may be a separate law instead. A couple of years ago, when our oldest was still in high school, she was taking the business track in school and was studying law. I helped her specifically with contracts (labor and rental [both temporary and long-term]). While it's possible that I am mis-remembering whether or not the clause about extraordinary expenses are actually in the national contract, I remember it being in there, but even if I'm remembering wrong, it is a national law.
Here's another article, where they specifically say it's part of the law (again, whether by nationally approved contract or a specific law, I'm not sure):
http://www.argnotici...-los-inquilinos
[quote]>Las expensas extraordinarias y el ABL ¿quién los paga?
Usualmente, las expensas ordinarias corren por cuenta de quien alquila. Éstas corresponden a los gastos de mantenimiento general, el sueldo de los encargados, etcétera. Las extraordinarias, que corresponden a gastos excepcionales u obras estructurales que suelen quedar en la vivienda, corresponden, por ley, al dueño. Lo mismo ocurre con el ABL. Sin embargo, éste podría fijar, por contrato, que los pague el inquilino. Es por eso que es necesario prestar atención a la hora de firmar el acuerdo.[/quote]
(Emphasis is original, I didn't put it in) Notice that they expressly say the extraordinary expenses, by law, are the responsibility of the owner. They do go on to talk about ABL, which they say can be set in the contract as to whose responsibility it is to pay. Maybe that's what you were thinking of? Also, it is indeed customary for a renter to pay ordinary expenses, but the last apartment I lived in the owner paid ordinary expenses AND extraordinary. Maybe you are thinking of it being customary who pays ordinary expenses?
And indeed, the contract where I lived in the suburbs, in a closed neighborhood - the owners were trying to get me to pay about 700 pesos a month in extraordinary expenses related to improvements to the neighborhood, which would have served to raise the value of their property. The real estate agent had told me before signing the contract that I wouldn't have to pay extraordinary expenses - I was concerned about expenses as this was my first real long-term rental here. I didn't understand enough at the time I signed the contract to make sure I knew what was what (I didn't speak Spanish very well at the time either, and a long legal document in Spanish was laughable for my comprehension! I was, admittedly, naive at the time).
I went to the real estate office after my second expenses bill came in and it had that extra 700 pesos. The owner was insisting I pay it, according to the contract, but my understanding was I didn't have to. The owner showed me in the contract I'd signed that I was responsible for it (shows how much he tried to take advantage of someone who wasn't familiar with how things work here!). I took it to the real estate office and she told me that he couldn't demand that I pay those, no matter what was in the contract, because it was "en contra de la ley nacional". I didn't pay, I told the owner why, and I never heard from him on that subject again.
If I'm wrong about this, or there have been changes to the law that have changed this, I'd sure like to know!