If you think your budget is $100k make that $150k. Don't forget furniture, lamps, rugs, painting rooms multiple times to get the right color, electronics, speakers, Cat6 wiring, window treatments, tv mounts, door bells, closet packages, storage solutions, garage remodel, probably a new garage door and opener, power washing everything, debris removal. It's a helluvalot. Better make that $200k.
I spent 6 months last year as the designer and GC on a full gut and remodel on my house that is only 14 years old due to a water pipe bursting while out of town. Kitchen not gutted but my wife told my cabinet repair guy to change the color of the cabinets while I was out of town. That added 15 days and a bunch of BS stopping all other work. Cabinet pulls cost another grand. Then we needed to update the kitchen backsplash...$1250. Shit never ends.
Now I had the vision and the skills to design and draw everything, so sorry I can't comment on the designer part. I considered one, but I never got one to show up. Managing multiple subs and material suppliers was a fuckton of work, and I kept my day job. Luckily, I work from home when not traveling for sales meetings, so I just lived in my truck in the driveway all day every day - managing the job and taking conference calls.
I lost 28 pounds and became a legitimate alcoholic last year doing that shit. Sample from one of my spreadsheets below.
Total
146751.57
Demo
Lawler
Tech Demo
2650.00
2650
Electrical
Lawler+Joe
Electrical
6275.00
Electrical Changes
Electrical Materials
3750.00
Framing
Lawler
Framing
4280.00
4280.00
Framing Changes
Walls
Lawler
Dry, tex, paint
9285.00
9285.00
Changes
Doors
First Source
Doors, casing
4857.20
7747.20
Bob Roper
Labor
1790.00
Doorhardwarecenter
Handles
1100.00
Finished Carpentry
Bob
Front Door Cap Labor
125.00
7750.00
Front Door Cap Mat
100.00
Mud Bench Labor
750.00
Mud Bench Materials
300.00
Book Case Labor
750.00