'Expand' Vs 'Extend'; buildings

[Mehrgan]

Hi all,

Do the verbs 'Expand' and 'Extend' differ in meaning when talking about buildings? For me, it feels like the latter must have something to do with the building's horizontal shape!

 

[J&K Tutoring]

Your understanding is generally correct. Extend usually refers to adding on in one dimension, while expand tends to indicate increasing size in more than one direction.