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which software are you using as I do not see it listed in signature? also maybe upload plan file so others can play with what you have

in settings somewhere where in it selects ROOM before anything else So if you have cursor over object you want but grabs one nearby Click TAB and it should cycle thru objects near cursor.

for garage roof: Click outer wall and open the object sceen. Then click on ROOF tab. then click HELP lower right Read up on Extend Slope Downward, shed roof & High Gable Me I would just manual edit roof planes over house and drag its right side down over garage and past exterior wall. Then set outer edge to match overhang I wanted. It may cut the outer wall and shorten it or have a gap over this wall and you will need to extend that wall up. IT is about playing with the tools you are giving to find the way to make it look like you want.

what format is this ARCHITECT plan? From HD software or something else? Professional should be able to open ay of the lower tier HD plan files.

not sure what you mean? you say 16" difference in top plate height. Do you want them the same? raise the roof 16" on the lower one to have matching eaves. They would do this by adding a short 16" wall on top of plate to short side.

I doubt it that is an extreme detail I have never seen DRAWN on plans. They are specified with words and that is it. Normally the concrete foundation crew figures it out and puts them in per spec

turn off auto dimensions. Also learn to play with the DISPLAY OPTIONS feature which turns on and off visible layers in the current type view, be it plan or any of the 3d

use the hardwood plank - looks the same. or create new material by using online photos I mad my own from the actual tile I used from Home Cheapo pictures

Gotta ask - How are we making these curved beams? Bending Steel or ??

HOW? change roof material for that room. Select a metal roof you like he picture of and then paint it for custom colo or use stock library colors. Not sure what I am missing?

railing like you did. For strapping add that as custom backsplash or use a shape from library; size them and then place them where you desire.

Talk to a home builder too so they can review and tell you what things cost and do not present other issues you or architect may not be aware of. builders will tell you what you need for plans etc

houses are built to framing. You are measuring to sheetrock on top of framing so you can change defaults to measure from framing or top surface I think it is called. Or just add or subtract 1/2" for each layer of wall sheetrock to you measured dims. Ie You measure width of room to be 10'-2" inside wall to wall. Framing would be 10'-3" inside (10'-2" + 1/2" + 1/2")

do you have examples? worse case draw manual roof plane.. but ou need something to hold up the outer corners...

My house can use some painting come on over I will give you a roller.