Maybe he buys a training building so that he can practice his ninja skills without being disturbed. It could have special facilities for his shadow clone jutsu practice.
Perhaps it's a community building. Naruto is a very community - oriented person. He could own a building that serves as a place for the villagers to gather, like a community center. There could be a cafeteria, a place for kids to play, and rooms for meetings and celebrations.
In many Naruto fanfictions, Naruto finding the ANBU building can lead to all sorts of interesting plot developments. Maybe he stumbles upon it by accident while on a mission. He could be curious about the secrecy surrounding it and decide to investigate, which might get him into trouble with the ANBU or even the Hokage.
Perhaps Naruto is being chased by some enemies and he accidentally runs into the ANBU building. This could lead to an unexpected alliance. The ANBU, initially suspicious of him, realize that he is not a threat and together they fight off the common enemies. After that, Naruto could start to have a more positive relationship with the ANBU, which is a big change from how they were before in the fanfiction.
One reason could be to start his own business. Maybe he wants to open a ramen shop of his own, or a place where he can sell ninja tools. After all, he loves ramen and has a good understanding of ninja tools from his own experiences.
The characters are key. You need shinobi with different skills and personalities to build and populate the village. Then there's the village layout. It should have areas for training, housing, and markets. Another element is the village's ideology. Will it be focused on peace like Konoha or something else?
Well, in a Naruto village building fanfic, you need to think about the architecture. It should be in line with the Naruto universe. Maybe there are special buildings for training different types of jutsus. Also, consider the social structure. How will the new village handle shinobi rankings and relations between different ninja families? You can also add some new elements, like a council made up of both ninja and non - ninja villagers to make decisions about the village's future.
He could transform the building into a ninja academy annex. Naruto loves teaching and passing on his knowledge. In this annex, he could offer advanced ninja training, focusing on things he has learned from his own experiences, like dealing with powerful enemies and using the power of friendship and determination.
One interesting concept could be the creation of unique ninja clans within the new kingdom. For example, a clan that specializes in water - based jutsu but with a new twist, like using ice in ways not seen before in the original Naruto series. Another concept might be how different villages interact with the new kingdom. Do they see it as a threat or an opportunity for trade and alliance? Also, the development of new ninjutsu techniques specific to the kingdom's needs is quite fascinating.
One great place to find free office building pictures for a 4 - story building is Flickr. There are many users who share their photos under Creative Commons licenses which can be used for free. Just search for '4 - story office building' and filter for the appropriate license.