Aquella casa está lejos.

Aquella means that ... over there or that one far away.

In Peninsular Spanish, there is often a three-way contrast:

• esta casa = this house (near me)
• esa casa = that house (near you, or not as close to me)
• aquella casa = that house over there (far from both of us)

So aquella casa points to a house that feels more distant.

Because casa is a singular feminine noun.

The demonstrative has to match the noun in gender and number:

• aquel = masculine singular
• aquella = feminine singular
• aquellos = masculine plural
• aquellas = feminine plural

Since casa is feminine singular, you use aquella.

Because in Spanish, demonstratives like esta, esa, aquella usually replace the article.

So you say:

• aquella casa
• not la aquella casa

This works like English that house, not the that house.

Spanish uses estar for location.

So:

• La casa está lejos = the house is far away
• La casa está en Madrid = the house is in Madrid

Using ser here would sound wrong, because ser is not normally used for physical location.

A useful rule:

• ser = identity, description, origin, etc.
• estar = location, condition, temporary state

Lejos means far or far away.

In this sentence, está lejos means is far away.

You can also extend it:

• Aquella casa está muy lejos. = That house is very far away.
• Aquella casa está lejos de aquí. = That house is far from here.

Because lejos does not behave like a regular adjective here.

It is normally used as an adverb or adverb-like word meaning far away, so it does not change for masculine/feminine or singular/plural.

Compare:

• La casa está lejos.
• Las casas están lejos.

Lejos stays the same.

The accent mark distinguishes está from esta.

• está = is (from the verb estar)
• esta = this (feminine singular demonstrative)

So in your sentence:

• Aquella casa está lejos.

the accent shows it is the verb is.

Yes, absolutely.

Lejos often appears either:

• on its own, when the reference point is obvious
  
  • Aquella casa está lejos.
• or with de + place/person
  • Aquella casa está lejos de aquí.
  • Aquella casa está lejos de mi casa.

If the context already makes the comparison clear, Spanish often leaves it unstated.

The most natural order is:

• Aquella casa está lejos.

Spanish can sometimes change word order for emphasis, but this neutral version is the one learners should use first.

For example, Está lejos aquella casa is possible in some contexts, but it sounds marked or emphatic. The standard, everyday order is subject + verb + complement.

A rough pronunciation is:

• ah-KEH-ya

Important points:

• The ll in modern Spain Spanish is usually pronounced like y
• Stress falls on que: a-QUE-lla

So the full sentence sounds roughly like:

• ah-KEH-ya KAH-sah es-TAH LEH-hos

In most of Spain, j in words like lejos is a strong throaty sound, not an English h, though LEH-hos is a helpful approximation for beginners.

Not always.

It often refers to something far away in space, but it can also suggest distance in time or mental distance, depending on context.

For example, Spanish can use aquel/aquella for things like:

• aquellos días = those days / those distant days
• aquella idea = that idea (perhaps more remote or detached)

But in Aquella casa está lejos, the most natural reading is literal physical distance.

Yes, especially in careful or clear speech, the three-way distinction is very much part of standard Spanish in Spain.

That said, in casual speech, people do not always use them with perfect logical precision. Sometimes esa can cover situations where a textbook might expect aquella.

Still, for learning purposes, this is a very good guideline:

• esta = near me
• esa = near you / somewhat farther
• aquella = far from both of us

So Aquella casa está lejos is a very natural sentence if the house is clearly far away.