This is called a "drywall return" and it's a perfectly acceptable modern way to finish a window, especially where one wishes to keep trim to a minimum throughout. I do them in all my rehabs. If you try to add any amount of trim to this, it will look silly -- let the house be a bit more modern than you're used to, and you'll probably get used to it! :)

Try creating the ledge on the bottom out of a nice wood or stone and getting some simple window treatments. Adding trim around them may make them look bigger and bulky. The ledge will add a decorative element that will also be functional for setting photos/nick nacks. In the kitchen, adding a decorative pendant light fixture would help by adding interest in the area without putting all the focus on the window.

trim around window and ledge, not around sides or top

it looks unfinished and the rehab expert above is just trying to validate his process

I think the depth is too deep for trim. Would look a little odd to me.

Drywall return left with window treatments would be the way I would go.

Well, I once had dinner with an architect in his parents home. He pointed out the untrimmed windows were a sign of a poor job. No being able to set anything on that deep sill, especially in the kitchen, looks all wrong to me.

Whether I was out of line or not, I still think wood trim around the window itself, which looks to be only a couple of inches and a sill are not just appropriate, but good looking. These windows are a dream setup for folding shutters.

now this would be the extreme, but not necessary and is definitely beautiful.

Cold Springs Farm solve the issue nicely. No need to build up the ledge quite so much.

Wyndmoor Residence Master Bath · More Info

I vote no trim. I don't see where you even have room for trim around kitchen window. I like the clean look of no trim, but we had to put trim around all our windows because the style of our house dictated it. We wrapped our soapstone over ledge, just an idea for your kitchen window.

I'm sorry, but it looks unfinished to me and as though someone was trying to save money by not going the extra step of installing trim. That said, you really don't have room around the kitchen window for trim. And, with the newel post so close, it looks as though fitting trim there might also be tight.

I've got a fully wood trimmed out window behind my sink in the kitchen, and the wood ledge is not the best IMO. In your shoes, I'd go for a stone ledge.

I'd put in marble sill liners and skip any other trim. Something like this:

True Residence · More Info

My windows on south and west walls are deep due to 6" studs for greater insulation, but not as deep as Jessica's. Those windows all have trim and look great, but the installation was designed with trim in mind. Normally I'd say go w/ trim. But Jessica's windows seem to have interferences that would make trim not look right w/ standard 2.5"W moulding. The K sink window has wallplates on both sides that appear to be right at 2.5" The middle pic seems to have a fireplace mantel to right of it too close to add trim. None of the windows seem to have enough clearance at bottom for a sill, as the lip one grabs to lift them appears to be very close to the existing sill already, not leaving room for fingers if stone or quartz added for sill. B/c of the interferences, I think you're better off leaving as is.

Ramona, "Well I once had dinner with an architect in his parents home. He pointed out the untrimmed windows were a sign of a poor job."

One off handed comment by an architect who may or may not have been any good, and you're taking the comment as gospel, and throwing shade at a Pro who was posting an honest recommendation?

Where would you like to add the trim on these rooms?

We have unfinished windows that were designed for trim. Is there a way to make them trimless or add a very thin trim to avoid the heavier trimmed look?

I vote “no trim”. The windows look great as is. Lovely❣️

How would we turn a window that was designed to have trim into a trimless version? We are in the middle of a basement renovation and this trim has turned out to be both asymmetrical on the right side next to the furnace wall and proportionally all wrong at the top. The drywall was not designed to be returned but is there a quick and efficient way we can accomplish this so we can achieve an untrimmed look? Thank you!

@Xochitl I know the thread is old and you probably won't see this but... your sink and counter are stunning!