邸宅・第宅|ていたくteitaku[0]heiban (flat)

1. noun(large) house; residence; mansion
   彼女かのじょはちょっとした邸宅ていたくに住すんでいる。↗

   She lives in quite a big mansion.

• Synonym屋敷やしきNeutralA spacious traditional estate taken together with its grounds, as in 「武家屋敷」; 邸宅 stresses a grand, luxurious building.
• Synonym宅たくWrittenWritten/formal prose for an ordinary house or home; mostly used in compounds rather than standing alone.
• SynonymレジデンスNeutralLoanword for a residence or upscale apartment; often used in the names of housing developments.
• Synonym邸ていNeutralThe same word as above, also written 「邸」: a spacious traditional estate; 邸宅 stresses a grand, luxurious building.
• Related自宅じたくNeutralOnly one's own home, regardless of size; it cannot describe a mansion in general.
• Relatedお宅おたくFormalA formal honorific for the other person's home, as in 「お宅に伺う」; it carries no sense of luxury.
• RelatedシャトーNeutralLoanword for a European castle or manor; leans toward a Western-style château.
• Related実家じっかNeutralOne's parents' home; defined by family ties rather than by size or splendor.
• Related住処すみかNeutralA place one lives or lodges, with a habitat or den nuance; it does not stress grandeur.

For a grand, impressive mansion use 「邸宅」, as in 「豪華な邸宅」 or 「大邸宅」. Traditional estates with their grounds take 「屋敷」; your own home is 「自宅」; honorifically, someone's home is 「お宅」; European castles are 「シャトー」. Use 「宅」 in formal compounds, 「レジデンス」 for upscale housing names, 「住処」 for a plain dwelling, and 「実家」 for one's parents' home.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 大おおきな立派りっぱな住居じゅうきょ。