How can a Muslim build a palace in Paradise instead of a house, based on the hadith: "Whoever prays twelve rak'ahs in a day and night, a house will be built for him thereby in Paradise"?

In the Arabic language, the word "house" (البيت) may be used to refer to a palace, as in the saying of Gabriel, peace be upon him: "Give glad tidings to Khadijah of a house of reeds" (بَشِّرْ خَدِيجةَ ببَيْتٍ من قَصَبٍ), meaning a palace. And indeed, a house in Paradise may be a palace; it is not necessarily a small house. It has also been mentioned in other narrations that a palace will be built for one who performs certain good deeds, such as the hadith: "Whoever recites 'Say: He is Allah, the One' (Qul Huwa Allahu Ahad) until he completes it ten times, Allah will build for him a palace in Paradise."