Surah An-Noor (24) — Ayah 36

36. (This light shines) in houses (mosques, etc.) which Allah has commanded to be raised and that His name be mentioned therein [62]; in them He is glorified morning and evening by men.

[62] Some scholars have taken "houses" here to mean mosques, and "to raise" to mean to build them, and the meaning is that such people whom Allah has granted the light of insight and who are always in search of the truth, and when Allah's verses are recited to them, they are already prepared to accept them—such people are found in mosques. If you want to see them, look in Allah's mosques where Allah's remembrance is always being raised. And morning and evening, such people are engaged in prayers and in tasbih and tahlil. Although this interpretation is also correct, there is no indication here on the basis of which the word "houses" should be limited only to mosques. Therefore, according to most scholars, "houses" refers to all the homes of the believers. And in every home, Allah's remembrance should continue, as well as tasbih and tahlil. Even the remaining parts of prayer (i.e., the sunnah or nafl prayers, apart from the obligatory prayers which must be performed in congregation, which in our language we call the obligatory rak‘ahs of each prayer) are better performed in one's own homes. Even if a person is unable to go to the mosque, he can perform the obligatory prayers at home (alone or in congregation). As is made clear by the following hadiths:
1. Hazrat Aisha ؓ says: Since I gained consciousness, I found my parents to be Muslims. And not a day would pass without the Prophet ﷺ coming to our house. Morning and evening, you ﷺ would come at both times. Then Abu Bakr Siddiq ؓ thought to build a mosque in his courtyard; he would pray there and recite the Quran. The women of the polytheists would stand and listen, their children would also listen and be amazed, and they would keep watching Abu Bakr Siddiq ؓ. Abu Bakr Siddiq ؓ was a man who wept much, so he could not hold back his tears. Seeing this situation, the polytheists of Quraysh became perturbed. [بخاری۔ کتاب الصلوۃ۔ باب الاستلقاء فی المسجد و مد الرجل]
2.
Performing Nawafil in Homes:

Mahmood bin Rabee‘ al-Ansari says that ‘Itban bin Malik was among the companions of the Messenger of Allah ﷺ and participated in the Battle of Badr. He came to the Prophet ﷺ and said: "O Messenger of Allah ﷺ! My eyesight has deteriorated and I used to lead my people in prayer. When it rains, a stream flows between me and them, so I cannot go to their mosque to lead them in prayer. I wish that you ﷺ would come to my house and pray in it so that I may make that place a mosque." The Prophet ﷺ said: "Alright, I will do this, insha’Allah." So (the next day) in the morning, the Prophet ﷺ and Abu Bakr Siddiq ؓ came to my house after sunrise. The Prophet ﷺ asked for permission to enter, and I gave permission. The Prophet ﷺ entered and, before sitting, asked: "Which part of your house do you prefer for me to pray in?" ‘Itban showed him a corner of the house. The Prophet ﷺ stood there and said Allahu Akbar, and we also stood and formed a row. The Prophet ﷺ prayed two rak‘ahs (nafl) and then made salam. Then we prepared some food and detained the Prophet ﷺ. Other people from the neighborhood also gathered in the house. One of them said: "Where is Malik bin Dukhayshin or Dukhshan?" Someone said (to ‘Itban): "He is a hypocrite; he does not love Allah and His Messenger ﷺ." The Prophet ﷺ said: "Do not say that. Do you not see that he sincerely says ﴿لا اله الا الله﴾ for the sake of Allah's pleasure?" ‘Itban said: "Allah and His Messenger know best. Outwardly, we see his attention and sympathy towards the hypocrites." The Prophet ﷺ said: "Allah, the Mighty and Majestic, has made the Fire forbidden for the person who sincerely says ﴿لا اله الا الله﴾ for the sake of Allah's pleasure." [بخاري۔ كتاب الصلوٰة۔ باب المساجد فى البيوت]