I've left melons on all of them. some things I noticed happening a lot was:
-you love candles. candles were somewhat a luxury and there shouldn't be any more than 1 in a low class house at most, unless they are a chandler. In places without too much trade or a chandler, like dfringfort, there should not be candles at all in low class houses.
-if you are worrying about lighting, put in a window rather than a candle. This doesn't apply in the North
-Pay attention to the style guide. Its there for a reason.
-Pay attention to whether or not a plot is open. in SS sprawl one should only build inside the lime green line in the sky. you built outside of it. That is the only major thing I noticed.
Only one major issue, its series of very good builds with only details awry. I'd like each of the melons addressed though and feel free to counter any of my suggestions with your own reasoning, my word is not law. I particularly liked the low-class duskendale house btw
remember you are not limited to these 5 builds and can keep building throughout the probationary period. I will continue to give feedback on your builds if you put them in this thread