What if you did dark stained (or painted in a dark contrasting color) maple on the surrounding cabinets and fir with clear coat on the island cabinets and window/door trims. You would have the durability of the maple for the cabinets that get the most use while still enjoying the fir throughout the house

Any chance you could look at rift sawn white oak? It has a grain similar to fir (very linear, not swirly) and in a very clear finish it is a pale, warm tone like fir. It is also durable and great for cabinets. Maple isn't a bad choice, it just doesn't have a grain like fir.

Agree maple is not a bad choice, but it yellows over time - not the finish, which can happen with any wood with an oil base finish. The wood itself gets more yellow. If you like that tone, not a problem.

An olive or sage green on the cabinets could also be nice. It seems like a lot of wood if all the floors and all the trim are in wood. If you want all the wood though, I think maple would be fine with a stain either a shade lighter or darker than your floors/trim.

I like the idea of darkening the stain on the cabinets that should combat the yellowing of clear coating the maple.

Green / sage tones will be nice for paint options for sure.

The white oak is also a good thought would you just go white oak throughout or break it up?

I like the white oak idea.......seems more palatable.

Another thought would be birch. I’m not terribly familiar with wood grains though, so the grains may not match well.

Since the fir is not a hardwood how well will the fir hold up to the demands of flooring? (I’m thinking spruce, pine, fir are all similar?)

I have clear VG fir trim around all my windows, with birch cabinets and oak floors, all with a clear coat finish. They are all a similar color after aging in place for a while. The fir was added 20 years after the house was built when I replaced the original metal windows with wood windows and it was a tiny bit lighter than the aged birch, but blended beautifully and is now nearly the same color. The tones were similar even in the beginning. I don't think maple will age the same and I wouldn't try to stain it to match. I'm in the PNW and the wood tones you are considering are pretty standard here. I wouldn't try to add a dark stain on maple. It can be difficult to stain evenly and there is no stain that replicates the beautiful color of naturally aged fir.

I remodeled a bath and had custom VG fir cabinets made and while they are gorgeous, I wouldn't do that again. The wood is too soft and even though I am very careful, they are easy to mar.

We have quarter-sawn white oak cabinets in a medium finish with oiled vg fir doors and trim. It goes well together. The fir slowly darkens over time. Our floors are a natural white oak. VG fir makes for a durable floor. The vg trim we have was made from old porch flooring.

I would not mix oak and fir but maple and fir will be a nice combo IMO. BTW I am from Calgary , lucky you building in Bragg Creek

Have you considered cherry? I have fir and cherry in my home and think they go great together. I don't like maple because it yellows, doesn't stain well, and most importantly lacks character.

I haven’t considered cherry but that’s an option for sure. Would you mind posting a photo of what yours looks like?
Is your cherry wood stained?