KEEP COMING BACK .. I WILL KEEP UPDATING as I think of more stuff
Run conduit everywhere so you can run wires for stuff very easily to a closet in your house (audio speaker wire, media , internet , security etc)
Try to use concrete fiber board inside of particle board
Run 4" pvc pipe under driveway multiple areas...some for drainage, some for exterior lighting , security cameras etc. Run it everywhere.
Watch every single invoice associated with your build.
Have all toilets away from kitchen area for sound elimination.
Avoid trendy things that are too unique, such as ship lap or wood slats instead of sheetrock.
Go out to the job site at least 4 times a week to catch mistakes (such as putting a window next to a AC pad). Also visit to close windows when it rains, get building material out of rain.
Get a real concrete pad poured for your AC so you don't have to worry about water and flooding.
Install lighting in attic
Front door and back door should not be affected by afternoon sun or a heavy rain..Have some good coverage , such as a patio or covered area that protects doors from getting hammered by rain or sun.
Have the AC unit in attic in such a place that it can easily be serviced.
Make sure you can easily drive your car into garage
DO NOT LET LANDSCAPE TIMBERS BE USED ON YOUR FENCE
DO NOT HAVE WATER HEATER IN ATTIC...
DO NOT LET YOUR BATHTUBS BE USED AS TRASH CONTAINERS DURING CONSTRUCTION..YOU WILL HAVE DAMAGE THAT CANNOT BE REPAIRED.