I would pry away some of the carpeting on the stairs to see if there is no hardwood for sure. If there is none, then I would get a dark patterned carpet for the stairs and do the hardwood on the rest of the floors. I love this animal print: Sisal also looks good with dark wood: You could also look for some more quotes. Seems like a lot of money to me.

That quote seems high to me, but I don't know what material you've selected. Because your stairs runs from wall to wall, you don't have to worry about finishing the ends so installing new treads shouldn't be so difficult. If you're adding 3/4 inch hardwood to the floor surface on the main floor and the second floor, I would think you could simply put the new stair treads on top of the existing which will maintain your even height with the new floor covering. If you replace the existing treads, but add 3/4 wood to the existing floors, the bottom riser will be too short and the top one too tall.

You can use veneer plywood for the risers as all the raw edges will be covered.

I like Ironwood's wainscoting idea

Definitely get some more quotes.. What's your location? as that will make a big difference in the price

Thank you soooomuch ironbuilder, houssaon, linda. We are going after other quotes and considering the options you proposed. Will let you know the final results!

Hardwood stairs are slippery & treacherous compared to carpeted stairs, especially if the tread is narrow. After you replace all your flooring to dark hardwood, suggest you replace stair carpet with carpeting that incorporates your floor & wall colors. There is too much contrast in the existing carpet & walls.
The present handrail looks utilitarian/functional. It could be replaced by a wood cap as suggested by Ironwood Builders. If the handrail has to stay because of building code, paint it the same color as the walls so it blends in. Wainscotting could be difficult, expensive & not have the desired affect because of the angles & elements it has to be applied around.
White wood casings and a dramatic drapery treatment would showcase the lovely big window.

I think it would be beautiful with hardwood steps and wainscot walls in white as shown in Ironwood's picture. That option should be a lot more economical!

Finally had a second quote done. Half the price. Going for it! Will post the after the reno photo. Thanks to all for your help!

Great! Look forward to seeing it!

lep, congrats!

half the price? holy moly. can't wait to see pics.

I hope it turns out like you want :-)

@lepineb did you ever get a picture of the finished railing? Would love to see.