Family patrimony: the constitutional figure that makes your home unseizable (and why almost no one uses it)

There is a legal device, with constitutional rank, whose effect is that your home cannot be seized or encumbered — not by commercial creditors, not by lawsuits, not by the business's stumbles. It is called patrimonio de familia (family patrimony), it takes one notarial procedure, and the proportion of entrepreneurial families that have it established is ridiculously low. It is the ground floor of wealth protection: the one that protects the irreplaceable before any sophistication.

What it is and where it comes from

Art. 27, section XVII of the Constitution orders local laws to establish family patrimony over assets that will be inalienable, unseizable and not subject to encumbrance. Each state civil code develops it: it typically protects the family's home and, depending on the state, a plot of land, the household goods and certain work-related assets. In Nuevo León, it is established before a notary (or through the courts), it is registered with the Registral and Cadastral Institute, and from that moment the asset is beyond the reach of seizures for later debts — with a value cap set by local law that is worth checking against your home's value before the procedure.

The honest limits (which the reel sums up with too much enthusiasm)

• It has a value cap: the protection reaches up to the amount the local law sets — for high-value homes, it protects partially or requires analysis of how to structure (the excess may call for other layers: a trust, marital co-ownership, a structure).
• It is not retroactive against existing creditors: establishing it once you have already been sued or already owe money is an act in fraud of creditors, voidable. Like all serious protection: it is built in times of peace.
• Tax claims and certain privileges: unseizability has exceptions depending on the applicable law — the mortgage debt on the asset itself, for example, and the reach against the tax authority has nuances analyzed case by case (the CFF has its own catalog of assets exempt from seizure, art. 157, where the family home has protections subject to requirements).
• It limits your own flexibility: the asset becomes inalienable while the regime remains in force — selling or mortgaging it requires first terminating the family patrimony, with its own procedure. It is a two-way lock: that is exactly what makes it protective.

Where it fits in the full architecture

Family patrimony protects the domestic core; it does not replace the OpCo/AssetCo separation on the business side nor the trust (fideicomiso) on the succession side — the three layers address different risks and add up. The sensible sequence for an entrepreneurial family: first the home (this device, cheap and fast), then the separation of productive assets from operating risk, and on top of that the succession architecture. Starting with sophistication while leaving the home exposed is like armoring the safe with the front door wide open.