Was that image taken from a magazine spread?
The photo is almost bordering on surrealism, with the very wide range for the HDR exposure, as well as significant perspective correction.
If that was the intent, then it is well executed. However if the intent was to create an accurate representation of what the human eye sees from this point of the room, then it went a bit overboard. The windows almost look like glowing pictures on the wall.
I think the color and exposure has been altered, as cdsilva suggested---it's very common in real estate listings these days. I just assumed there was a fjord just below the window frame!
But about the chair---no idea here but I'm guessing they might be mostly beech with the top of the back in teak...maybe? I had a set of Swedish chairs that were a very different style than that but which were all beech except for the back.
Can you go see the house and flip a chair over when no one's looking? Only kidding...sort of...
Absolutely go and look!
Knowing the color is not very true, it is hard to say much about it, but that is pretty dark for teak (not impossible) and probably more likely to be Afrormosia based on the color. The light wood might be oak, or beech, as Spanky said. None of that probably helps much...
I’m guessing: oak frame with a teak backrest.
The seat is woven seaweed
Similar to this Mogensen chair: http://samling.nasjonalmuseet.no/no/object/OK-2001-0198
Sure. In fact if the backrest are Afrormosia that would suggest Norway a bit more, as the use of Afrormosia as a primary wood was more common in Norwegian pieces.
I think it is possible the seats have been replaced as well, because the diamond weave done in seagrass is not very common. Søborg Møbelfabrik and Karl Andersson are the only makers I can think of who combined those two variables. The use of paper cord and/or a basket weave is much more common.
The photo is too low resolution for me to be sure of what that seat is woven of---looks like it could also just be paper cord that is totally shot. I've seen some that look that messy. But they're also sagging more than paper cord at its worst, so who knows.
The seat looks like it'd be a pain to weave, too, the way the stretchers on the sides are right under the seat rails. It's not a seat frame that is woven separately from the chair frame and then dropped in, because the back rail appears to be integral to the chair frame.
I had not even thought about how you weave that seat. I think you could remove the seat frame and weave it. Then drop it in and attach it with some screws up through the side rails. I don't think the rear of the seat frame needs to be part of the chair frame at all: the rear stretcher and backrest would provide all the structure needed.
Considering the large amount of cord you have to carry to do one of these diamond weaves, I don't see it being practical to slot it through between the seat frame and side stretcher. Possible, yes, but it would take so much longer to weave.
Or you'd have to do a lot of short lengths. That guy who weaves for Fritz Hansen (? I think his name is Benny---the guy in that video where he's weaving in the store window) does this type of seat that way and just ties a lot of very neat knots. Wouldn't work for me, though. Well, no, it probably would--but I'm pretty settled in with my own method at this point!
The weave is actually quite common on Norwegian chairs.
Especially for this kind of chairs (Jær stol) http://www.slaake.no/produkter/jaerstolen/
I have done it on a couple of chairs, and it pretty straight forward.
https://www.youtube.com/watch?v=NQkE05DD9_Y
You can buy large rolls of seaweed yarn similar to paper cord online.
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