Good day,

i have a strange but interesting ask to do:

my character is a Nord Healer, now at 13th level, and member of the Mages Guild: this is my MAIN character and of course with him i will follow the Main Quest when the time is done (i will start more or less at 20-25th level).
Now my ask is simply: I feel perfectly suited in the Guilds/Factions i belong already and I don't want join any House (-Hlaalu have Camonna Tong in them and I hate deeply Camonna's, Redoran are religious fanatics and hate Imperial Cult and Telvanni hate Mages Guild)
My aim is to become MG Archmage killing the idiot Trebonius and continue to stay in the Guilds/Factions i have choosed without join any House, even i will become Nerevarine: may i do this or is necessary belong to a House?

My aim is to remain completely neutral and not join any House if i can, working only for the Guilds/Factions i choosed already.

Actually i belong to: (Guild/Faction, title, notes)

Imperial Cult-Adept ( i want stop here, only doing the Oracle Quests but without get promotions, Adept is good for me)
Fighters Guild-Journeyman (FG interest nothing to me, i will stop at this rank)
Mages Guild-Journeyman (i want become Archmage)
Blades-Novice ( no comment-spoiler )

extra vanilla-
Public Library-Fellow (i want become Staff member)

You don't need to join any house to complete the main quest. Becoming their hortator doesn't require being in their house. Anyway this should be in cheats and hints.

Not only is this true, the game couldn't actually feasibly require joining a house to become Hortator of that house, seeing as you need to be named Hortator of all three houses to complete the main story, and you can only join one house.

So there you have your answer. Joining a great house is quite optional. I've made characters who have never gotten involved in any great houses before, although I can't recall if any of them ever completed the main quest. But regardless, if you don't want to join any house with your current character, simply don't do so. You can still become the Nerevarine regardless.

Great.

I like to avoid Houses: my character has done a long work for become a member of the Mages Guild, and i want do a main career into this Guild: actually i am Adept in the Imperial Cult, and Journeyman in the Fighters Guild, then i will stop my career in these factions because i think to have reached the right rank for be respected and have my discounts when need. Also, the Fighters Guild it's also more or less involved with Camonna Tong, and i don't want help these racist and xenophobic people (when the right time come i will kill the evil Camonna leader, Orvas Dren-justice need to be done!) and for the Imperial Cult i appreciate too much the high priestess in Ebonheart for steal her place and become the leader.

I belong also to the Temple, but i did exactly as Caius Cosades said: use the Temple only for services. I think that sooner or later i will do also the pilgrimage of seven Graces, but i doubt about gain some rank into Temple before be named Nerevarine, i will think about it.

I thank you of your replys, and jalla bye-bye