I plan on living in it for at least the first year to qualify for FHA, so it would be in Colorado Springs where I live and work currently.

Yes turnkey means the GC handles everything from permit to CO and gives you a turn key guaranteed price that does not change unless you make changes.Also some GC have stock plans or do design in house which will save you on design fees.

In Colorado Springs, my clients will do any of the following:- basement conversion- garage conversions- rent by the room- multiple unit house hacks (house and cottage, duplex, triplex, fourplex).- buy a property with two unit zoning and build an ADU on the backLots of options.

@Nick KramerAn early welcome to Colorado Springs.

I know lenders (and have used them) in Colorado Springs that are offering 90% LTV HELOCs on investment properties and 95% LTV refinances on primary residences.

Unfortunately my credit took a huge hit because I co-signed for someone’s vehicle and got burned with them missing 8 payments.

If the deal turns out to be a loser, you could have one co-bene refusing to sell, tying up the deal in a lawsuit to force a sale.  

Add your fee to the DP/PP , OR simply breck it out on the HUD, , the title co will pay you 

Uses that also target the business incubator residents/visitors and remote workers might work, e.g. many years ago I'd thought about doing a sort of subscription-based co-working space - something of that sort may do well initially, but may be much more successful in about 5 years as the area continues to redevelop.Current resident population within 1/2-mile is lower-income.

No plumbing inspector should be pointing out non-plumbing things unless he is also the CO inspector which is unlikely.