depends on the door.

solid, hollow core, etc. just the door? door and jamb...

It would be a mix of both solid and hollow core. Door and jambs.

Actually a couple of pocket doors as well although if just those doors needed to be standard height that would be fine.

What style doors, raised panel, flat? What are they made of, wood, hardboard, mdf? Are they off the shelf? Who are you looking to buy them from?

I haven’t gotten that far. I’m just trying to determine my window header height and what size interior doors would be best. I just know a mix of solid core doors and hollow on closets, etc.

Windows are traditionally set at a higher header height than interior doors in order to capture more natural light. How tall are you ceilings? The difference between 7' & 6'8" doors is not a simple percentage and it will vary depending on the door material and where they are purchased.

9’ ceilings except living room. I was planning on an 8’ exterior front door and then standard slider or patio rear door with transom. I wanted windows at 8’ as well but am worried they might appear too high from the exterior. I don’t have the elevation rendering yet. I’m just trying to narrow down window sizes currently which will change depending on header height. I thought 7’ doors may be a better balance but I don’t want to pay a large special order price differential.

I guess I was just wondering if they are more readily available. I know at one time I read they were even more than 8’ doors.

I think we have no idea without at least seeing the elevations and honestly 4 " is it worth the extra money it would not be for me. I think you need to work with your architect on these choices, changes you make have an effect on many things .

If windows are traditionally set at a higher header height than interior doors, what is the typical header height for 6’8” doors? I thought they usually lined up (unless lining up with a taller exterior door).

This site has a quote form for custom doors. Shaker Doors | Mission Doors | Shaker French Doors (nicksbuilding.com)

Almost a year ago, 7' doors were almost as much as 8' doors. For stain grade, solid core doors, the 8' doors were double of the 6'8". It probably depends on the specific style and manufacturer, but the price jump from 6'8 to 7' was significant, almost but not quite double.

I understand it’s a supply and demand issue, but that’s wild to me that 4” extra could be close to double the price!

" I guess I was just wondering if they are more readily available. "

That is also material dependent. 6'8" and 8'0" have become a commodity in some lines and materials, 7' is not a commodity and priced accordingly. Which is why I have been asking what the doors are to be made of, the style and where you intend to purchase. Anything else is a crap shoot.

Use 8' if possible.

6'8" doors are commodity for most part. Some 8' doors are higher volume & used in higher end tract and the bulk of custom and reflect pretty good pricing.

Haven't seen a 7' door used in a custom home for decades. suspect its a custom run just for you.

We have both 6 8 and 8 doors in our build and we are doing solid poplar, 5 panel. There is maybe a $60-80 difference per door. The width can change the price a bit but that's for both sizes. Pre-hung its running around 390-480 per door. I know there are plenty of cheaper doors available that might run standard 6 8 products with a much higher discount, so the variable very much could depend on your location and door style/material. If you are doing mahogany or alder the difference could be much larger. We are using an online source but not all builders like to do that.

The places we are doing 6 8 doors are only because I'm trying to create a closed in area for aesthetic purposes (pantries, closets, etc.) where we plan to wrap shelving around the door. All others are 8' doors, even the kids rooms.

Just a note: We debated this like you, and went with all 6 8 throughout in our very first build about 10 years ago. My thought was we could add transoms for light and keep all the doors very reasonable. Between installation and paint and hardware and transoms, I don't think the price difference would have been even noticeable had we gone up to 8' doors and it does make a massive difference in the way a home feels walking through it.

We are all 7' (84"). Cost was fine. 8' is goofy with 9' ceilings.

I just went back to look at our quote from last summer. For paint grade, to go to 8' doors was almost 50% more than the 6'8" paint grade. However, for stain grade, it was actually more than double (130% more) to go from 6'8" to 8' (both sizes in stain grade)

How about some links to compare quality. Link.

1 Panel Mahogany Shaker Doors

6' 8" Only $468 Pre-hung
8' 0" Only $593 Pre-hung

It would be a mix of both solid and hollow core. Door and jambs.

In my own home, I'd rather see all the doors match. You don't want your house to look like you've rennovated a couple times with no eye for continuity. Even if a door is "pocketed", it should look like the other doors in the house.

9’ ceilings except living room. I was planning on an 8’ exterior front door and then standard slider or patio rear door with transom. I wanted windows at 8’ as well but am worried they might appear too high from the exterior. I don’t have the elevation rendering yet. I’m just trying to narrow down window sizes currently which will change depending on header height. I thought 7’ doors may be a better balance but I don’t want to pay a large special order price differential.

You're all over the place. I suggest you visit a couple model homes -- with a tape measure. Only then will you know you're choosing things you'll really like.

We are all 7' (84"). Cost was fine. 8' is goofy with 9' ceilings.

This is the kind of thing you can only learn by going out and looking at things for yourself.