15-17 feet?? I'm hoping you meant inches, based on your photo.

is the wall load bearing? if so, a structural engineer will need to be called out to see if shortening the wall will have an effect on the load.

if not load bearing, it's easy enough to do. (we've done it ourselves). if you can't do electrical, then an electrician will need to called in to reroute.

Don't forget the flooring. do you have any extra? it will have to be feathered in to match the rest.

after widening the opening, you'll have drywall to be refinished, new molding, painting, baseboards. what are your plans for those cabinets? will those be removed? add it to the cost.

can you do any DIY?

How much? it just depends on who you get. my husband could do all of it in one trip. you may have to call in 2-3 diff workers.

You'll also have to consider the fact that the flooring was most likely cut around the existing walls, so it will need to be re-done. What kind of flooring is it?

5-20K. There isn’t enough information and this has to be done in person.

@Beth H. :LOL yeah i mean inches, shooooot

My semi-pro SOBF (Significant Other Boyfriend) widened a cased opening by 6 inches for $40 in materials and it took about 3 hours of work.
It was not load bearing and didn’t have any electrical in the area. It still needs to be muddled, taped and painted.

If your home is older, which from the cabinets I’m guessing it may be, you may not be able to match the door molding. To have an exact match made is not cheap.

well, 6" is lot more doable than 15-17", with electrical and flooring to worry about.

Is your floor wood-look tiles? Do you have any extras, maybe in a closet or under a cabinet? If your door surrounds and baseboard can be removed carefully, maybe they can be re-used.

@partim I have some in the closet which may cover but I'm concerned removing them may cause damages to the tile floor

@latifolia It is an old home but I'm going to replace all my kitchen cabinets so they won't be a problem

@katinparadise The floor is definitely a concern because I can't find the darn same one on the market!!!

@Flipping Crazy You are so lucky!!! I hope me or my husband knows how to do it so afraid to mess up so I'm gonna leave it to the pro

My son recently opened a doorway between 2 rooms with different flooring. He didn't have any extra pieces of either flooring. He used a threshold piece similar to this. Not as neat a solution as butting them together but it actually looks fine. If you went this route, you'd have the wood finished in a color the same as your tile, and go all the way across.

Doesn’t your doorway have trim around it? It looks like it does. When you widen the doorway, you will need longer trim on both sides of the wall. You can re-use the side pieces if they are carefully removed, but the top pieces will be too short.

@partim That's a pretty good idea!

IMO if you are not aDIY persone get a contractor and see what comes up removing walls is always a crap shoot since often there are other things in the walls like heating ducts, plumbing . Is that your kitchen in the background> It is always an issue to do things backwards like the flooring after the kichen design for instance. I would need to see the whole layout to make any helpful suggestions at this point.

As far as the non-matching door moldings, as long as they're the same width and approximately the same profile, you'll never notice that they're different from the other door moldings in the house. Especially since they won't be right beside another door.

My experience in doing renovations like this is that there are often compromises and small mis-matches. No-one sees them. Go for it!