The editor is a mater of choice. The way that OSM works is nodes have an x,y coordinate. Nodes are strung together to make a way. Then both nodes and ways can be used in a relation. osm.wiki/Elements
Here is an example building relation/131564 that used a relation to create the holes in the foot print. Using a relation to incoportate other empty hoels is what you would have to do to make Skywater look more like the aerial image. I am perfectly fine with what you did because you are just learning.
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Relations are also used in boundaries. I believe that is where you are struggling with the admin boundary change. There could be other tagging issues as to why your change did not show up in search. You might want to gain experience editing/adding nodes and ways before tackling relations.

craig, Thank you for learning the iD editor and adding your address. It would be really cool if you had time to survey your area and add your neighborhood addresses too. As a broker, I think it would be great for you to add addresses of properties that you are processing. Again, thanks for your contributions. Send me a note if you need assistance as I map in the metro Phoenix area. Greg

Thanks for your attempted cleanup. I had make other adjustments because an addr:housenumber of 1 is not valid in this area.

@cgthigpen those are some great first edits. I have been down that way to survey and map. It is a crazy place to keep updated with all the new building construction. Keep up the good work. We need some more editors in the Tempe area. You are using the iD editor. It may be hard to add the empty areas to the buildings. @user_5359 should have taken this into account. The name and address are also appreciated. Thanks. Greg

@freebeer ha ha ha.
@RubikCubical it means that this area must have been mapped for the Pokemon game. If you look at this swimming pool, way/479980367/history , then you can see it was mapped as water first with perhaps a node for the actual swimming pool. I am guessing @freebeer had a hand in cleaning up this area and a bunch of California changesets that had the same frog song for a changeset comment.

"Phoenix FBI Building Leaves Prints In The Desert", https://kjzz.org/node/188667 there were several newspaper articles on the building. The KJZZ versions has a bunch of pictures. I did not realize from earlier articles that the windows of the building are DNA markers. The Bing imagery at the time showed the two pools clearly. All of the recent imagery in JOSM have very hard shadows that prevent a clear view of the north side of the building where the pools are.

The real question is that J. Edgar Hoover's thumb print? https://en.wikipedia.org/wiki/J._Edgar_Hoover . I thought that I had some north bound images on 7th street where the address marker is located. There is a thumb print there too. Here's a west to east view of the building https://www.mapillary.com/map/im/QILH0nUDoo0q5dTlxz06yQ .

https://www.azdot.gov/projects/central-district-projects/loop-202-(south-mountain-freeway)

Oh! Here is some more information on the South Mountain Freeway. The images are interesting along with the schedule.

I added the tags back. I just drove the area again today. The images are still being uploaded. The sound wall has been built. We will have to wait for some more time to pass. It almost looks like this column will take the ramp right through the some of the houses including the relocation of power lines. https://www.mapillary.com/map/im/lkIms45yUG9-PZPpYfssaw I don't know if more houses will be removed after the owners are moved out. Half of the apartment buildings still exists. If you zoom in on this photo, then you can see that the electric meters have been removed. https://www.mapillary.com/map/im/4cE8jsx9ixd8UpIlaII6PA These buildings could be on the way out also.

Welcome to OpenStreetMap. Thank you for you recent change sets. There are some resources that you can consult. One is Mapillary and the other is OpenStreetCam. I think that you might have been too aggressive in your cleanup the South Mountain/I-10 area. I believe that construction has left half of the apartment place and there are still one or two buildings along North 59th Avenue that still exist. Keep up the good work but please remember to check several image sources before removing features. I hope this helps. Send me a message if you have other questions

https://www.mapillary.com/app/user/raveneye?lat=33.45648499997219&lng=-112.18558166666668&z=17&pKey=QZRLblkXmnU-HPNDJ8qwVA&focus=photo

https://www.mapillary.com/app/user/raveneye?lat=33.458753055555576&lng=-112.18401305555557&z=17&pKey=RPn49FhmGmpC0JRS7DF4fg&focus=photo

I removed the highway tag as a conservative first step for the changes to the subdivision. I think part of this subdivision will be removed. I wanted to make sure before adjusting West Belleview Street. I have not been down this way in six months. You can see adot images here https://www.flickr.com/photos/arizonadot/sets/72157681461022065/ raveneye has some Mapillary flyover images of the area and it looks like raveneye took some ground images from 12/2017 https://www.mapillary.com/app/user/raveneye?lat=33.45648499997219&lng=-112.18558166666668&z=18.49488560393603&pKey=QZRLblkXmnU-HPNDJ8qwVA&focus=photo

I believe DGDEAGLE change sets as a new user were too aggressive. The road construction left some buildings in the apartment place and along North 59th Avenue.

@ mueschel stop spreading bad information about the Tiger import. I use the data every day.

MMendoza3569 did you draw in a pokemon spawn point? I looked at DigitalGlobe, Esri World Imagery, and Bing imagery. I cannot see Grand Canyon tearing down a new building to put in a lake.

Welcome to OSM editing. It is a real art because you have to know when aerial imagery is good to use and when it is not. The primary issue with this change is that you removed the Black Mountain ramps that connect to the AZ 51 highway. Those ramps are visible through gps traces and Mapillary street images. Here is an example image https://www.mapillary.com/app/?lat=33.67242143660337&lng=-112.00188123877524&z=17&pKey=QggZHNf2h3qj2VCBr_Saxw Also note that we are in a building boom again. You have to really pay attention to where the new growth is because it will not match up with Bing.

Please think of adding features first and gain some experience before deleting features. I always prefer to modify verses delete.

Please also don't let this discourage your new mapping efforts. If there is anything that I can do to help out please send me a message via inbox/outbox feature of the OSM website.

Changing a street name for your spam is just not cool. Locate where the business goes and add the business there. Your work will actually be helpful. Otherwise, no so much.

compdude, it was an obvious mistake. Is there any reason that you could not fix it if you already noticed the problem?

https://lists.openstreetmap.org/pipermail/talk/2017-September/078716.html
I sent an email to Frederick. I am wanting to get started on this fix up but need to wait on what he is going to do.

https://www.mapillary.com/app/?lat=33.29103866595153&lng=-112.09639820280677&z=17&pKey=twvt-zP1XJ8bBhHRdc_NwA

https://www.mapillary.com/app/?lat=33.29108363486205&lng=-112.09703656855231&z=17&pKey=73R652Wyr0TG5yjHZyPdxQ
jnaven has some 9/12/2017 Mapillary traces.

Oh! I was waiting to get going 22 days ago.