I think a good installer will just put down a 1/8 " plywood to even the floors before install.

That would mean that the existing floors would have to be pulled up which I wasn't planning to do. I'm hoping to match the existing floor depth. Thanks Patricia

It depends on the profile of the material. You don't provide any clues on what you are doing, adding to existing, patching, etc. There are engineered product that come in 5/8" thickness and 2-1/4" width if the standard solid 3/4" boards can't be used in your intended application.

Yes, we have oak floors in 2 bathrooms, the entry ways, and the kitchen and other than the kitchen floor, which just needs to be refinished, the oak floors are in great shape. The carpet, although original to the 1984 house is top notch and no matter what I spend, I can't find a carpet like it. The carpet is badly worn out in the hallway and family room. So, I'm going to take the carpet from my living room and dining room and have that replaced with hard wood flooring which butts up against the entryway and the kitchen. I'll take the carpet from the living room/dining room area and have that installed in the family room. I was hoping to have the new oak floor in the living room/dining room installed in a chevron pattern. So, although I could go with an engineered product, I'd prefer to find a match to my existing floor. The hardwood floor would also be installed in the hallway.

Good luck. I can't think of anything solid that meets your criteria.

You may be better off having the subfloor sanded slightly where it meets the existing flooring if possible, then having the new floor finished to match, with a little extra sanding at the doorways to make them flush.

p.s. I was prepared to eat my words after seemingly finding multiple sources for 5/8" x 2-1/4" Oak flooring, then I noticed they were all engineered.

Got it. Thank you Timothy for the response! Is there an engineered wood that meets the criteria that you could recommend or point me to?

I just bought some Maxwell 5/8" x 2-1/4" select, plain sawn engineered White Oak today. My supplier stocks it and I'll have it tomorrow.

When I have ample time or need something custom I would buy from Owens, though it's been a while. Sometimes it needs to be produced, then I pay LTL freight.

Owens has a 6mm veneer where Maxwell is 4mm but I can't find anything on Owens site about unfinished materials.

https://www.owens-flooring.com/inventory/

https://anchorfloorandsupply.com/shop/flooring/owens-unfinished-engineered/

https://www.maxwellhardwoodflooring.com/

Photos of what you have would be REALLY helpful.

And am I reading this right: You are taking USED carpet from ONE AREA of the house and having it REINSTALLED in another area???

I'm sorry if this offends, but "ICK!". A carpet from 1984 (35+ years old) is FILTHY. You don't realize it until you pull up the carpet and see/breathe in all that dirt and dander (90%+ of household dust is human skin cells and dust mite feces). I've seen workers pull off 5 shop-vac containers of dirt out of a living room covered in 30 year old carpets. It is DISGUSTING.

Please please please have a back up plan for your carpet reinstall.

Thank you so much for that info! I have professional measurer coming out and will ask him about the wear layer remaining.