Possibly they use Remodel Housings which just slip up through a hole the size of the aperture of the fixture.

They may find that easier than installing them first with standard housings and then cutting the holes in the proper places in the drywall.

You should ask them how they are doing it, it's only guessing from this end.

Even though you don't see the cans yet, you should see light switches for all 50 locations. Those and the wiring can't be installed at this point. Some may be on a single switch or controlled by switches at more than one location. Are these 6" or 4"? 6" will be more likely remodel housings. If you don't see all the switches, bring the upgrade order paperwork to the attention of your builder.

Thank you. The issue is, I am not allowed to go into the house during construction. I sneaked in while the appliances were being installed. I just noticed the lack of holes for the recessed lighting. I was able to go in on weekend until sometime back. But now the door is locked and I don't know the garage door code. I did not look at the switches. It is 4" recessed lighting.

Theyre probably using wafers. the whips and possibly j boxes and rough in plates are likely behind the drywall and just need the holes cut.

Im very certain theyre not just going to forget your lighting. give them some more time.

If the actual fixture is not specified in the contract you may well be getting wafers.

They are the newest thing, but I don't personally like them. They are not actually recessed, they are flush with the surface of the ceiling/fixture and I prefer the light source to be actually recessed in the fixture, in the ceiling. There are recessed fixtures that are rated to be surrounded by insulation, and the penetration into the insulated envelope isn't really relevant on the first floor of a multistory house anyway.

I think the wafers look like the Tap Lights that you stick up with double-edged tape like they used to sell on TV. I don't think there is a lot of data about how these fixtures are going to work out over time. An old fashioned fixture with a bulb you can change can last a really long time. An all in one disc, it's hard to say, but I have been in new construction where there are failures already and then there is the issue of the replacement matching the existing in appearance, color temperature and light rendering. I know I am probably in the minority opinion on this

Regarding failures of wafers. Stock up now with replacements to protect you in the future. There's a question of lumens from wafers. You need a good amount and proper placement for working at your counters and sink. You'd like them in front of you, so you don't create a shadow on what you're cutting. 450 lumens at the counter minimum. The cost of this upgrade should have included the specifications to justify the price.

Can you post the actual language and any info relating to this upgrade?

I have used the "wafer" type of lights for over 10 years. Back when they were very expensive choices, you had a lot of pushback from electricians about them. There have been no "outages" of them reported, and I did ask to be notified, because the first users were sorta the beta testers, and I was prepared to replace them with conventional if needed. No one has ever took me up on that.