DON'T DO IT!
Your house. Your rules.
No marriage. No cohabitation. No playing house.
NO!
Say it with me... No!
You did it yourself. Until laws change, no cohabitation. No marrying. No staying the night.
If you cave, you bring it on yourself and have yourself to blame when ****ed over.
Your friend is youtube. Any trade friends, cash money and a case of beer will suffice. Do what you can yourself. Landscape, painting, etc.
Create a routine. Live and learn.
31 is fine. I got mine at 25. The plan is 2nd property by 35. I want to landlord before 40 but, cawk sucker government hit you with capital gains, tax 50% off the top. You can only have 1 live in place of residence. Still, 50% of nothing is nothing.
You will learn op. YouTube is a good resource. Simply putting on a door was difficult at 25 new home owner. You will learn. Enjoy.
Finally, COMPARTMENTALISE expenses for maintenance and upkeep. As in, one year, fo the roof, finish the basement, install a Walk in glass shower, driveway, etc. Pick based on the current necessity. Small chunk it.
As for LTR, she's gonna try to move in, piece by piece, leaving her crap, staying a night. Stealing a dresser space, etc. Nip iy in the bud.
NO!
As a bachelor, home owner, women enter in my place feminine, fit, dtf, and submissive plus making sandwiches. Anything toxic not in the mood, LMR and low sex drive means#next!
Its not up for debate op. XYZ. What you do is gospel or gtfo.
Don't **** it up playing house. I installed a hot tub for after parties.