Things to consider

There were probably several ideas you have accumulated up to this point on items that you want to have done for you during the build process, here are few things to consider:

-40-50 year shingles
-Thicker decking on the roof
-Increase amount of insulation, consider foam. Most states have some minimum for walls and ceilings. Depending on where you live you might want to increase it.
- Is your home energy star rated? If not, look into what needs to be done to attain that.
- Engineered joists
- Low- E, and triple pane glass (where applicable) windows
- Tankless water heater
- Increase height of basement walls (poured or block)
- PVC footer drain
- Solid core interior doors
- Fiberglass entry door (or something with better insulation value)
- Insulated garage doors
- Kitchen countertop material (many choices these days)
- Wood flooring - natural or synthetic
- interior wood trim - thickness and height consideration depending on if you want to paint or stain
- wrought iron ballusters
- concrete vs asphalt driveway
- gas cooktop
- exterior water outlets
- exterior electrical outlets
- high efficiency hvac
- bathroom rough-ins for future use
- garage,basement,utility water access and drains
- rubberwall coating on basement walls

The list goes on and on, but helps you see some of the things you may not have considered. It's much easier to see what can be upgraded once you see the contract, but it's also nice to have thought of them beforehand.