Why not hire a designer just for a broad sweep? An overview of the plan first. That’s what sets into motion the details like where to plan for reinforcement, etc. without a strong plan then you both are flying blind.

I don't think there's time to find someone, we're almost ready for drywall.

I suggest you hire a local interior design professional on an hourly basis to help with whatever you need. If you need to delay a bit to make that happen, that's the price for moving ahead without one in your corner early on.

The person that designed the house should be able to provide an applicable checklist.

I way you're going to get value here is to post your floorplan, lighting plan, hvac info, exterior elevations(4 sides) and location/orientation. Put out that effort and you'll likely see good usable results. Whatever you post, make big with readable measurements.

For a designer, ask for help from the designer who works with your husband on other projects. You might get lucky.

As your husband is familiar with different construction. He probably has a good idea on your needs. We are also building a new home. And designing it ourselves. To meet our needs as we know what we want. My beautiful wife has foot issues and could possibly need a wheelchair some day. Having the receptacles higher than conventional, we will probably be 24 ininches above the floor. 36 inch doors. Extra backing in bathroom walls for hand grips. Curb on the large shower stall. Open concept for the interior walls. Windows in the living room will be low enough to see out when sitting in a chair. And watching the grandkids play. More 3 way electrical switches for lighting. Security systems that are centralized with a large screen.

Use 30 inch tall cabinets together with standard 36 inch tall kitchen cabinets so that she can have counter space that is easily reached. And she is 5'2" tall. The lower counter helps her.

We have winter and icy sidewalks. We have infloor heating tubes so we have a zone for heated sidewalks. Our boiler will also supply non stop hot water. For hot water to reach the kitchen sink faucet faster. I installed 1" water lines. Hot water faucets on the outside. I enjoy rebuilding old vehicles and use this for cleaning engine bays.

Just a few of the non standard build that we have

We have a lot of the same details as we are seniors and hoping to “age in place.” The house is well equipped for standard and ADA specs, as well as all the personal details we could think of early on. I just keep fine-tuning some things 😊

Don't expect to be able to accomplish all that you will need, because there are somethings that are not evident until it's built.

So....do the best that you can with what you know - right now. Then, hopefully the punch list will be short.

All of what you are talking about shold have been done last year at this time, before one shovel of dirt was moved. That's how you figure out how much this will cost you in the end. You do the planning on the front end. It's way late for most of that, since you are at the drywall stage and the body is already formed.

Even if folks are near the drywall stage, asking questions is always good. And doesn't hurt a thing

Have you ordered your kitchen cabinets yet? I understand that you're in drywall so reconfiguring a space is probably not going to happen, but if you haven't ordered your cabs then you can post a 2D overhead of your kitchen space and adjoining rooms to get good layout advice here and on the Kitchens forum. (I realize you asked for a checklist, but I would add 'great kitchen layout' to any planning checklist.)

You don't say what you've already decided or is already on your list, but one thing I didn't factor in until the end of a recent big remodel project was window treatments. They can be pricey (my shades were 10k+ just for 3 BRs and a FR, which as I said I hadn't factored in to my budget.) They also need some lead time for measuring and installation, so you might want to add that to your list, especially as there are so many options just for shades (motorization, fabric, type of mount, etc.)

Yes, cabinets are on track. The home design and layout are great. My husband (GC) works closely with the subs. What I’m looking at is the non-standard finishing details (mostly specific locations of things) that I hadn’t thought of or hadn’t told the subs ahead of time. As it is they’ve made changes and additions after my visits to the house. I just wished I could tell them everything ahead of time. Thank you all for your comments!

Sounds like you are in way over your head; and you need help. This is going to be your home...for a long time, I hope.

I have no idea why folks would write that you don't have the ability to do this job.

Hopefully you stay positive and enjoy the experience. Really nothing you can't do

aklogcabin, I think some of the answers were either meant for another discussion or I wasn't very clear in my question. In any case, thanks for your encouragement! I haven't found a checklist but none of my afterthought requests have annoyed any contractors so it's all good. This is our 4th owner-built home (since 1981) and every time, though we put most of our wishes into the planning/design stage, a few non-standard things have always come up during construction. Good luck with your new home build!