Step-by-step explanation:
Let’s start by learning some basic adjectives to describe a house in Spanish and the rooms in it. We could use many different words, but propably the ones that fit better for house descriptions in Spanish are these adjectives: GRANDE (big), PEQUEÑO (small), ANGOSTO (narrow), CÓMODO (comfortable), INCÓMODO (uncomfortable), ESPACIOSO (spacious), NUEVO (new), VIEJO (old), MODERNO (modern), CARO (expensive), BARATO (cheap), FRESCO (fresh), CALIENTE (hot) y HELADO (cold).
One of the main differences when compared to English adjectives is that Spanish adjectives will be placed after the noun we are describing, not before in most cases. For example, to describe a big house in Spanish, we could say “Yo tengo una casa grande” (I have a big house) not “Yo tengo una grande casa”. In this sentence, the word GRANDE is the main adjective describing the house in Spanish.
One of the simplest way to describe things, particularly for describing a house in Spanish is by using the verb SER (a form of “to be”) and the grammatical structures:
Subject + verb + adjective e.g. La casa es hermosa.
Pronoun + verb + noun + adjective e.g. Esta es una casa hermosa.
SER is an irregular verb so it will be used as “ES” for a single object like CUARTO (room) and “SON” when referring to several objects like CUARTOS. Some sentences using SER with adjectives are: “La casa es pequeña” (the house is small) and “La sala es cómoda” (the living room is comfortable). Another way to describe the house in Spanish is with the verb LUCIR (to look). LUCIR will be conjugated as LUCE for a single object and LUCEN for several as in the sentence “La casa luce pequeña” (the house looks small).
It is important to mention that in a regular house description in Spanish, we will also find the verbs HAY and TENER to talk about the things in a room and the verb ESTAR plus prepositions of place to indicate the location of rooms and parts of the house.
I hope this gave you ideas of the adjective of casa!