The only true installation issue I see is that the small corner area (your last photo) that was filled with caulk (or grout) should have had a small piece of tile cut and installed. The reason that there are accent dots missing around the edges is that the room is no longer square - which is almost a certainty in any home, particularly if it is more than a couple of years old. Even new construction is not perfectly square/plumb/flat. In a room that is no longer square the pattern is going to be off somewhere. The tile setter cannot prevent that, they can only decide on the best way to lay the tile in order to attempt to make it less noticeable. The octagon tile with the inserts is sent by the factory as a sheet on a mesh backing so the tile setter cannot adjust the spacing of the individual tiles unless he/she is laying them where there is too much space between the sheets of tile. If that is the case, one would have to look to see if he/she was trying to stretch the joints some in order to minimize the issue of the room being out of square or if it was just an error.

So if your walls are not completely straight tile is going to show all the uneveness as for the grout lines that is just a poor install that corner in the 4 th pic would not have an octogon tile there not quite enough room but should have had apiece of white tile there.. I don't know if these tiles were cut for this install or came on a mesh sheet so not sure about the ones you think jut out.

Thank you Deborah, Patricia and Ellsworth for your responses.

I think the pictures are not very clear but there are actually depressions for the accent dots, but it is just not installed. If you enlarge the first picture, you will see half triangles depressions, only the pieces are missing. So it doesn't look like lack of space or the room not being square is the problem because there is space for the dots, just the dots are missing. Also the house is brand new.

What can help with this type of pattern in a non-square room is to run a few inches of a solid tile that matches or complements the mosaic. Trim/scribe that solid tile as needed to follow the variations in the wall, and you're creating a straight line for your pattern mosaic to line up with.

countbla, the room has enough space for the tile and the dot. I am not able to fit this information in the original post so I will repeat what I said in the comment before. If you enlarge the first picture, you will see half triangles depressions, only the pieces are missing. So it doesn't look like the lack of space or the room not being square is the problem because there is space for the dots, just the dots are missing.

What is reasonable to ask for the installer to do? We planned to move in the next few days but am not sure if we should wait for this to be fixed before moving in.

Yes maybe for continuity's sake they could have installed more of those half-dots across instead of giving up halfway (probably after realizing how difficult it is to cut those little slivers of accents and make them look the same).

Personally I wouldn't request that the error be extended, but rather to have the whole thing laid out properly.

I like to think any competent installer would have laid it out to avoid half-dots altogether especially in such a visible spot.

If there is room for the insert triangle pieces I would at least ask that they chip out those spots and fill them with the tile. Not a great layout with those cuts along the shower curb but at least make the look along there consistent.

Yes, I have asked the missing accent dots/diamonds to be inserted. This is a more close up picture of missing diamonds.

They can be individually inserted. There may be some collateral damage to adjacent tiles but easily repaired.

Another solution would be to remove the little coloured bits along the tub and just have all white tiles inserted. I think it would fool the eye to looking straighter.

I second Lila's solution. Plain white along the tub line would be a cleaner look, wouldn't highlight the crooked layout line there.

All of your points would frustrate me. The missing colored tile is noticeable and every time I would look at I would be sad. If there where no colored tiles at all along that wall it would look fine. Is there a way to "cut out" the color tiles and replace with white. Depending on the size of the space I might ripe it out and redo. Good luck.

Here is a picture of grout used instead of tile at the corners:

I think the best fix would be to just insert white triangles in the space along the shower to fool the eye into thinking the install was straight. A professional tiler would never, ever end in such a visible area. They would have started their run at the shower base and had the uneven parts hidden under the vanity or behind the toilet. Plus they would have gone over this with you prior to installing. But, if you came into the build project at the end when you are purchasing the spec home these things would not have been brought to your attention. If this larger developer wants to continue to have success and happy clients, I would suggest that they not use inferior product or inferior subcontractors for the projects that will bear their name and reputation.
If you have not been part of this project from the beginning, I suggest you wisely spend the money for a home inspection prior to closing to make sure no other corners were cut.

bunnyllg, there are no white triangles only gray-blue diamonds. So, they will have to install those. The home was bought from a big developer who contracted the flooring out to a big flooring company. We have been involved from the very beginning, from laying the foundation to drywall to flooring. With the flooring company, we only had to select the kind of tile we wanted.

Then I would say it's an installation problem. If those areas are filled with the blue pieces you will notice the varying sizes as the line is not plumb. At this point it is a matter of what you can "let go" and what will both you every time you walk into the room. With a bathroom rug up against the wall it might not bother you. Good luck. I am in the last few weeks of building a home so I know what you are going through.

The floor company has got replacement tiles and is ready to start work on Monday.

Does that sound like a good solution? Or should we ask for a complete reinstall given the large number of dots missing and some dots are not laid flat, that is they are caving in one side and jutting out in the other. Some octagons protrude out. There are several of those.

Here is a picture:

I think I would push for complete re install. But honestly I am not sure it is going to work out well unless you do plain white border with this tile as the center. The white tile border will hide the fact it is a little wonky.

Let them try the "repair". Keep tabs on them. Inspect the repair. If you aren't happy, NOW you tell them to come in and do a complete re-do. Let them try...explain that if it does not meet your expectations you will require them to do it again.

Yes, they are going for repair in these dot bathrooms and laundry. The work will start on Monday.

I have not thought about the possibility about the repair not being good enough. That does not sound like fun. Having a similar conversation again yet one more time is going to be hard. I do want to be reasonable here. I have not explicitly explained that if the repair does not meet my expectations they will have to do it again - speaking like that is kind a hard for me. However, I also want a good floor..

The floor company outsources the flooring work to another company, A worker came from that company, but apparently he was not told about the extent of the work. He had pictures of only a few missing dots in one bathroom and insisted that he would do only that. He was not happy when we showed all the work. It was always a struggle to get him to work on anything as each piece had to be individually taken out and replaced. After some time we stopped asking him to fix stuff - just let him finish whatever he wanted to do

He also said he is not getting paid for any of this work and he was unhappy about that.

We told the floor company about the general unwillingness and they said there was a miscommunication between his boss and him about the extent of work.

The floor company seems okay with fixing if we find more problems but the experience was not good. The floor looks much better now, though there are still a few issues.