1. The Root of the Error: The Direct Translation Trap
In our globalized world, the cross-influence of languages is growing, but this also leads to some common errors. In Spanish, using ‘basado en’ to express a geographical location, such as ‘located in’ or ‘stationed at,’ is a classic example.
This mistake stems from a direct translation of the English phrase ‘based in,’ a linguistic phenomenon known as an improper calque (calco inapropiado). In English, ‘a company based in London’ means a company with its headquarters in London. However, the Spanish ‘basado en’ does not carry this meaning.
2. The True Meaning of ‘Basado en’
According to Spain’s leading language authority, Fundéu (Fundación del Español Urgente), the correct meaning of ‘basado en’ is ‘founded on, supported by, or established upon something’ (fundado, apoyado o asentado sobre algo). It is typically used to describe the basis of an idea, theory, work, or argument.

For example, correct usage includes:
- “Una película basada en hechos reales.” (A film based on real events.)
- “Su argumento está basado en una premisa falsa.” (His argument is based on a false premise.)
3. Analysis of Common Errors in Media Reports
This improper calque has unfortunately seeped into some news media reports, leading to non-standard language use. Here are two typical examples of this error:
- Incorrect: “El joven ha estado una década relacionado con la inteligencia estadounidense, primero como ingeniero informático de la CIA, basado en Ginebra.”
- Analysis: The sentence attempts to convey that the engineer worked in Geneva, but “basado en Ginebra” is an incorrect calque from English. The correct phrasing should directly state the location.
- Incorrect: “Aunque está basado en Londres, ha invertido la mayor parte de su primer año en el cargo viajando alrededor del mundo.”
- Analysis: Here, the intent is to state that the person’s primary workplace is in London. “Basado en Londres” is another awkward application of the English “based in London.”
4. How to Correctly Express ‘Located In’
To accurately express the concepts of ‘located in,’ ‘situated in,’ or ‘headquartered in’ a geographical location, Spanish offers several idiomatic and rich alternatives. Here are some recommended options:
- Ubicado en: The general-purpose term for “located in,” widely applicable.
- Radicado en: Means “residing in” or “established in,” often used for people or organizations.
- Sito en: A more formal and literary term for “situated in,” common in legal or official documents.
- Con sede en: Specifically means “headquartered in,” perfect for describing companies or organizations.
- Con base en: Means “with a base in,” carrying a connotation of a military or operational base.
- en: The most concise method; simply using the preposition “en” followed by the place name is often clear enough.
5. Examples of Correct Usage
Using the correct expressions mentioned above, the two incorrect sentences can be revised as follows:
- Revised Sentence: “El joven ha estado una década relacionado con la inteligencia estadounidense, primero como ingeniero informático de la CIA en Ginebra.” (The most concise usage)
- Revised Sentence: “Aunque está radicado en Londres, ha invertido la mayor parte de su primer año en el cargo viajando alrededor del mundo.” (Using “radicado en” to emphasize their place of residence)
By mastering these distinctions, Spanish learners and speakers can effectively avoid common translation traps and make their expression more idiomatic and precise.