What an aval actually is
An aval (also called a fiador) is a person who guarantees your lease with their own property. Not a character reference and not a co-signer in the American sense. They hand over the deed to a home they own in Mexico City, and if you stop paying, the landlord can pursue that property.
It is a serious thing to ask of somebody. That is exactly why it works as a filter for landlords, and exactly why a foreigner who arrived three weeks ago cannot produce one.
You will almost certainly not find an aval. You do not need to. You need a póliza jurídica, which is the instrument the market built to replace one.
The four things everyone tries first
Before landing on the answer, most people cycle through these. Each one costs money, time, or a friendship.
1. Pay six months upfront
The instinct is that cash solves it. Sometimes it does. Often it does not, and this surprises people more than anything else about renting here. A landlord who has been burned before wants legal recourse, not a lump sum, because recovering a property from a non-paying tenant in Mexico is slow and cash in hand does not speed that up. You will also have tied up several thousand dollars with no legal protection of your own.
2. Ask a friend or colleague to be your aval
You are asking someone to stake a property deed on your behalf. Even people who like you will hesitate, and they should. If it goes wrong it does not just cost them money, it costs you the relationship.
3. Rent only from landlords who skip the requirement
They exist. They are a small slice of the market, they know you have no alternatives, and they price accordingly. This is where the foreigner premium in Roma Norte and Condesa comes from. You are not getting a favour, you are paying for one.
4. Stay on Airbnb and deal with it later
Two to three times the market rate, no tenant rights, no stability, and a host who can cancel. Fine for three weeks, corrosive for six months, and it postpones the problem instead of solving it.
What actually works
A póliza jurídica is a legal guarantee policy issued by a specialist company. You pay a fee, the company underwrites your tenancy, and the landlord gets the legal recourse they were asking for. It replaces the aval entirely, and it is the normal path for foreigners renting in Mexico City.
Expect it to cost roughly two to five percent of the annual contract value, and expect to pay for it yourself. Some providers approve applicants with no Mexican credit history and no residency, which is the specific thing you need to check before applying anywhere.
The full breakdown, including which providers take foreigners, is on the póliza jurídica page.
What a landlord checks besides the guarantee
The aval question gets the attention, but it is not the only gate. In practice you will also be asked for:
- Proof of income at roughly three times the monthly rent. This is close to universal and it is the number most people underestimate. On a 30,000 peso apartment, that means demonstrating around 90,000 pesos a month.
- Recent bank statements, usually three months.
- Identification. A passport is fine.
- A deposit, normally one month's rent.
Self-employed and remote income is workable, it just needs more paperwork. Start assembling this before you start viewing, because the apartments worth having do not wait.
This is the single most common misconception, and it stops people applying who would have been approved. Residency makes some paperwork simpler and it is worth having, but it is not a requirement for most rentals. What matters far more is demonstrable income and a valid guarantee.
How long it takes
Around two weeks from the moment you commit to a place, assuming your documents are already in order. The paperwork causes the delays, not the search.
That gap matters more than it sounds. Good units in Roma Norte and Condesa move within hours or days. If you begin assembling documents after you find a place you like, you will lose it. Assemble first, then look.