Nos vamos a mudar a un apartamento pequeño el sábado.

We are going to move to a small apartment on Saturday.

Breakdown of Nos vamos a mudar a un apartamento pequeño el sábado.

• pequeño: small
• nosotros: we
• a: to
• ir: to go

Questions & Answers about Nos vamos a mudar a un apartamento pequeño el sábado.

What does nos do here? Why are both nos and vamos present?

• nos is the reflexive pronoun required by the verb mudarse (to move house). It shows the action affects the subject (ourselves).
• vamos is the 1st-person plural of ir, used in the periphrastic future ir a + infinitive (“going to”).
• The subject pronoun nosotros is optional and omitted here. You cannot drop nos with mudarse.

Can I say Vamos a mudarnos instead of Nos vamos a mudar?

Yes. Both are equally correct and common:

• Nos vamos a mudar…
• Vamos a mudarnos… With two-verb phrases, the pronoun can go before the conjugated verb or be attached to the infinitive. Meaning and register are the same.

Is mudarse always reflexive? What does mudar mean without se?

• mudarse = to move (change residence): Nos vamos a mudar.
• mudar (non-reflexive) = to change/replace something: mudar la ropa (change clothes), or animals shedding: la serpiente muda la piel. For “move house,” use the reflexive form.