Please, visit my shop at the Unity Asset Store, for some quality modular assets.
Unity Saucy Sushi shop

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Unity asset store - Modular spaceship interior

Environment cutted in pieces, available for being purchased. It is one of the pieces I have at the asset store. It is previous at URP

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Unity Asset Store - Interior Architecture

Asset divided in pieces to be modular and allow people to recreate 3D environments without the need of a 3D artist or for the 3D artist to be faster doing prototyping, I had to versions of this, one regular houses and the other one resembling more futuristic.

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Unity Asset Store - Sci-fi Modular architecture interior

The same feeling but focused on resembling a futuristic house, where are a lot of LED lighting, other ends of the walls, but same theory of using modular pieces to repeat and distribute.

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Unity Asset store - Modular cathedral

Modular cathedral - Enviroment for videogames, creating modules to create procedural dungeons and great enviroments wich involves big stone architecture