-22 years old-$50,000 pre tax income from business this year-80k in savings-30k in investments-pre approved for $350,000 (had to use parents as co-signers because I started business 2 years ago and didn’t make much first year)Looking to get into first house by house hacking a 4 bed 2 bath renting out 3 rooms.

I’ve read the Bigger Pockets book on long-distance real estate and am eager to get the ball rolling. 

And how do I roll this into a cheaper mortgage (my dti would be too bad for another conventional).Maybe a lender would be able to consider the electric "working" with the proper inspection?

I have 2 options:- finance the construction pre-selling the apt, and take my profits (expected to be around 700K pre-tax); or- finance the construction with a 6-7%/year loan (collateral = my house), keep the 10 units, and once the building is completed in 24 months, rent them for circa 180K/ year gross.

I would contact an attorney to get the ball rolling and see what's next

If you discovered the issue before paying for the appraisal that could hopefully save some costs (in case the appraiser is with the wrong AMC).Pre-vetting with the lender on rental history/AIRbnb/1007 as well as seasoning could help. 

I am about to graduate college in May 2025, and will be making about $120k (pre tax) in my full time job postgrad (Washington DC area).

I would recommend that you get out to local meetup events, as that is where you will make the really deep connections to help you get rolling. 

Is there a pre existing loan with that bank with either of you?

Personal Financial Statement Borrower’s Schedule of Real Estate – or- Resume illustrating experience2-3yrs Personal & Property Tax Returns – All schedulesPrevious Year and YTD Property Profit & Loss statement w/ detailed expensesRent Roll w/ detailed lease informationCopies of all Leases3mo.