بيت الجار الجديد قريب من بيتنا.

In Arabic, a present-tense sentence like this often has no written or spoken verb for is/are. This is called a nominal sentence.

So:

• بيت الجار الجديد = the new neighbor's house
• قريب من بيتنا = near our house

Together, they mean the new neighbor's house is near our house, even though Arabic does not need a separate word for is here.

It is an iḍāfa construction, often called a genitive construction or possessive construction.

• بيت = house
• الجار = the neighbor

When you put them together as بيت الجار, the meaning is the neighbor's house or the house of the neighbor.

In an iḍāfa:

• the first noun is the thing owned or described
• the second noun is the owner or related noun

So here:

• بيت = the house
• الجار = of the neighbor

Because in an iḍāfa, the first noun normally does not take الـ.

So Arabic says:

• بيت الجار = the neighbor's house

not:

• البيت الجار in this meaning

The definiteness of the whole phrase is determined by the second part. Since الجار is definite, the whole iḍāfa بيت الجار is also definite.

Because adjectives in Arabic usually come after the noun they describe.

Here, الجديد follows الجار, so the phrase is understood as:

• الجار الجديد = the new neighbor

Then the larger phrase becomes:

• بيت الجار الجديد = the house of the new neighbor

So the structure is:

• بيت = house
• الجار الجديد = the new neighbor

In the intended reading here, it describes الجار.

So the meaning is:

• بيت الجار الجديد = the house of the new neighbor

This is a very common learner question because in normal Arabic spelling, without full case endings, the phrase can look ambiguous.

With full case endings, the difference is clearer:

• بَيْتُ الجارِ الجديدِ = the house of the new neighbor
• بَيْتُ الجارِ الجديدُ = the neighbor's new house

In ordinary unvoweled text, both are written the same way, so context usually tells you which meaning is intended.

Then new would need to describe بيت, not الجار.

With full case endings, that would be:

• بَيْتُ الجارِ الجديدُ

Here الجديدُ is the adjective for بيتُ, so it comes after the whole iḍāfa.

That is an important rule:

• if the adjective describes the second noun inside the iḍāfa, it comes right after that noun
• if it describes the first noun, it comes after the entire iḍāfa

So compare:

• بَيْتُ الجارِ الجديدِ = the house of the new neighbor
• بَيْتُ الجارِ الجديدُ = the neighbor's new house

بيتنا means our house.

The ending -نا is a possessive suffix meaning our.

So:

• بيت = house
• بيتنا = our house

Arabic often uses suffixes instead of separate words like my, your, our.

Some common examples:

• بيتي = my house
• بيتك = your house
• بيتنا = our house

This is also similar to an iḍāfa idea: بيت + نا literally works like house of us, meaning our house.

Because قريب often takes the preposition من when talking about physical closeness.

So:

• قريب من بيتنا = near our house

This is just the normal Arabic pattern:

• قريب من المدرسة = near the school
• قريب من هنا = near here

For learners, it is best to remember قريب من as a set phrase.

In fully vowelled MSA, the sentence is:

بَيْتُ الجارِ الجديدِ قريبٌ من بيتِنا

The case endings are:

• بيتُ → nominative, because it is the subject of the nominal sentence
• الجارِ → genitive, because it is the second noun in the iḍāfa
• الجديدِ → genitive, because it describes الجارِ
• قريبٌ → nominative, because it is the predicate
• بيتِنا → genitive, because it comes after من

In normal Arabic writing, these short vowels are usually omitted, which is why learners do not see them in the original sentence.

A careful MSA pronunciation is:

baytu al-jāri al-jadīdi qarībun min baytinā

A few helpful notes:

• ج in الجار and الجديد is a moon letter, so the l in الـ is pronounced:
  • al-jāri
  • al-jadīdi
• جار has a long ā
• جديد and قريب both have a long ī

If you pause at the end in normal reading, the final short vowel may be dropped in speech, but the full grammatical form is still useful to know.

Yes. It is a completely normal and natural Modern Standard Arabic sentence.

Its structure is:

• بيت الجار الجديد = subject
• قريب من بيتنا = predicate

So it is a standard nominal sentence:
[subject] + [description/predicate]

This pattern is extremely common in Arabic, especially for simple statements about identity, location, and description.