Vendieron la propiedad ayer.

Vendieron is the preterite form of vender (to sell).

In this sentence, it means they sold or you all sold.
The preterite is used because the sale is seen as a completed action that happened at a specific time in the past: ayer (yesterday).

So:

• vender = to sell
• vendieron = they sold / you all sold

Spanish often leaves out the subject pronoun when it is clear from the verb ending.

So vendieron can mean:

• they sold
• you all sold (formal plural, ustedes)

In Spain, the most natural reading is usually they sold, unless context makes it clear that the speaker is addressing several people formally.

Yes, grammatically it could.

Vendieron is the same form for:

• ellos/ellas = they
• ustedes = you all

However, in Spain, informal you all is normally vosotros, and that would be:

• Vendisteis la propiedad ayer.

So without context, a learner in Spain should usually read vendieron as they sold.

Spanish often uses the definite article more than English does.

Here, la propiedad means the property.
It refers to a specific property already known from the context.

Compare:

• Vendieron la propiedad ayer. = They sold the property yesterday.
• Vendieron una propiedad ayer. = They sold a property yesterday.

So la tells you it is a specific property.

In this sentence, propiedad most naturally means property, especially real estate or a piece of owned property.

Depending on context, it could refer to:

• a house
• land
• an estate
• a property in the legal/ownership sense

In everyday English, a very natural translation might be:

• They sold the property yesterday.
• They sold the house yesterday.
  if the context shows it was a house.

Putting ayer at the end is a very normal Spanish word order.

• Vendieron la propiedad ayer. = standard and natural
• Ayer vendieron la propiedad. = also correct, with more emphasis on yesterday

Spanish word order is often flexible. The end position here simply sounds neutral and natural.

The preterite is used because the sentence describes a completed event.

• Vendieron la propiedad ayer. = They sold the property yesterday.
  This presents the sale as a finished action.

If you used the imperfect, vendían, it would usually suggest:

• an ongoing or repeated action in the past
• background information
• something not viewed as a single completed event

For example:

• Vendían propiedades en esa zona. = They used to sell properties in that area.

So ayer plus a finished event strongly favors the preterite: vendieron.

It is regular.

It comes from the regular -er verb vender.
Preterite endings for regular -er/-ir verbs include:

• vendí = I sold
• vendiste = you sold
• vendió = he/she sold
• vendimos = we sold
• vendisteis = you all sold (vosotros, Spain)
• vendieron = they sold / you all sold

So this is a good example of a regular preterite form.

Because Spanish usually doesn’t need subject pronouns unless they are being emphasized or contrasted.

So instead of saying:

• Ellos vendieron la propiedad ayer.

Spanish often just says:

• Vendieron la propiedad ayer.

You might include ellos only if you want contrast, for example:

• Ellos vendieron la propiedad ayer, pero nosotros no.
  They sold the property yesterday, but we didn’t.

Yes. That is also correct.

La propiedad la vendieron ayer is a form of left dislocation, where the object is mentioned first and then repeated with la.

It can sound like:

• The property, they sold it yesterday.

This structure often adds emphasis or helps organize information in conversation.

The neutral version is still:

• Vendieron la propiedad ayer.

Because the personal a is used mainly before specific people (and sometimes pets or personified beings), not ordinary things.

So:

• Vieron a María. = They saw María.
• Vendieron la propiedad. = They sold the property.

Since la propiedad is a thing, not a person, there is no personal a.

The active sentence is:

• Vendieron la propiedad ayer. = They sold the property yesterday.

A passive version would be:

• La propiedad fue vendida ayer. = The property was sold yesterday.

Spanish often prefers the active form or other alternatives instead of the true passive, but fue vendida is completely correct.

Another very common Spanish option is the se-passive:

• Se vendió la propiedad ayer. = The property was sold yesterday.

In standard Spain Spanish, it is pronounced approximately like:

• ben-DYE-ron

A few helpful points:

• v and b sound very similar in Spanish
• di before e sounds like dye
• stress falls on die: ven-DIE-ron

A rough guide:

• vendieron → ben-DYE-ron

Only if you mean last night, not yesterday in general.

• ayer = yesterday
• anoche = last night

So:

• Vendieron la propiedad ayer. = They sold the property yesterday.
• Vendieron la propiedad anoche. = They sold the property last night.

Both are correct, but they mean different times.

If you are speaking to more than one person informally in Spain, you would use vosotros, not ustedes.

So:

• Vendisteis la propiedad ayer. = You all sold the property yesterday.

Compare:

• Vendieron la propiedad ayer. = They sold the property yesterday / you all sold it (formal)
• Vendisteis la propiedad ayer. = You all sold the property yesterday (informal, Spain)

This is a very useful distinction for learners of Spain Spanish.