Well, one possibility is that Harry Potter builds the school in a hidden location, away from the prying eyes of the Ministry of Magic. He might create a curriculum that focuses on both traditional magic and new, unique areas of study that he discovered during his adventures.
Obviously, Harry Potter himself would be one of the main teachers. He could teach Defense Against the Dark Arts, given his vast experience in that area. Hermione would be a great fit for teaching Transfiguration or History of Magic, as she has a deep knowledge of both.
Perhaps he barters with magical beings. He could offer his services in solving magical problems for them in exchange for rare building resources. For example, he might help a group of centaurs with a prophecy issue and in return, they give him enchanted wood or special stones. He may also get help from his friends who have access to different resources. Hermione might provide some rare books with building spells, and Ron could get some things from his family's old collection.
One possible plot could be that Harry, after all his adventures, realizes the importance of a new kind of magical education. He decides to build a school that focuses on teaching not only magic but also how to use it for good in the real world. He might gather his old friends and some new allies to help him find a location, design the curriculum, and recruit students from all over the wizarding world.
In the fanfiction, his self - built house may have a unique defense mechanism. Maybe it has a moat filled with a potion that makes any intruder forget their malicious intent. Also, the house could have a tower where Harry can practice advanced magic undisturbed, with a view of the magical landscape around. The interior might be decorated with items from his travels, like the Triwizard Tournament mementos.
Well, perhaps Harry Potter decides to build a school in Italy to spread the knowledge of magic in a new region. He might face challenges like getting approval from the Italian Ministry of Magic, if there is one in the fanfic. And he would need to find suitable teachers who are familiar with both the British and Italian magical traditions.
The school could be a place full of magic and innovation. Maybe it has special courses for female witches to master their unique magic powers. There could be gardens filled with magical plants that are used for potion - making and spell - casting practice.
Obviously, Harry himself would be one of the main teachers. He could teach Defense Against the Dark Arts. Hermione would also be a great teacher. She could teach Transfiguration as she was excellent at it. Ron might teach something like Care of Magical Creatures. He has a lot of experience with magical creatures from their adventures.
Well, it could include advanced magic like time - turning spells. After all, Harry has had his own experiences with time - travel, so he might want to teach students how to use it safely. Also, there could be a course on magical creature care, especially for those dangerous ones like the Thestrals, which he's quite familiar with.
Well, the setting in the 'lord harry potter builds his lordship fanfiction' is important. It could be set in Hogwarts or the wider wizarding world. If it's Hogwarts, he might be building his lordship among the students and faculty. In the wider wizarding world, he'd be dealing with more complex issues. And of course, his own personal growth, from being just a wizard to a lord, in terms of his magical abilities, moral compass, and decision - making skills, is also a crucial element.