How to Say "next door" in Spanish
The Spanish word for “next door” is “contiguo” — B2 level.

Examples
Mi oficina está en el despacho contiguo.
My office is in the adjoining room.
Las dos casas son contiguas y comparten un jardín.
The two houses are adjacent and share a garden.
Buscamos un terreno contiguo al nuestro para ampliar la granja.
We are looking for a plot of land next to ours to expand the farm.
Matching the Noun
Since this is a describing word, its ending must change to match what you are talking about. Use 'contiguo' for masculine things (el cuarto contiguo) and 'contigua' for feminine things (la habitación contigua).
Using it with 'a'
When you want to say something is adjacent 'to' something else, always use the little word 'a'. For example: 'El garaje es contiguo a la casa'.
Don't forget the 'a'
Mistake: “La cocina es contigua la sala.”
Correction: La cocina es contigua a la sala.
Related Translations
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