Thomasville has a similar chair at this link http://www.thomasville.com/Item4022/King-Street-Dining-Room-Urn-Back-Chair.aspx Bernhardt Martha Stewart Collection also has a similar chair at this link http://www.marthastewart.com/page.jhtml?type=learn-cat&id=cat21262&site=

Hard to say for sure, many companies have done that look over the last 20 years. I'd have to guess Dinaire (out of business) or Hollywoods, but it could be one of a dozen other companies. Look under the chairs, you may find it there. Good Luck!

Your best bet is to contact the selling agent and get connected with the stager/designer to ask them where they bought it. You may even be able to work out a deal to purchase, but I would price check comparable sets to make sure it's a good deal.

I'm going to guess that it's a custom door. You need to find a place like these: https://artfactory.com/wood-iron-glass-doors/ https://www.vintagedoors.com/dutch.html I have a neighbor who works for an ad agency that had a contract with a security door manufacturer. He came to me one day and asked if they could put a security door on my front door (it was a really pretty door sort of like the one you like, leaded glass, lots of interesting detail) so they could photograph it for an ad. They gave me a free security door as payment. Likely, someone from an ad agency asked this homeowner if they could put the lights on their house in return for some kind of compensation to use it in the Costo ad.