Alot of the items maxis includes are just plain ugly, and that goes for build items as well. Luckily we have some very talented creators who have made defaults to cover up the maxis fug!
Remember, with any default replacement you can only have one to replace an item in your game, some downloads show different coloured options for one thing, but you can only install one of those options to replace it.
Starting with Phaenoh, we have a lovely white roof trim, this seems to brighten up any house!
From Maranatah there is a replacement of the ugly brown edge of the walls
Theres quite a few replacements of the ceiling build edge, some from fairy forest (remember to only pick one!)
plus many more!
Some from Mootilda
One from Physcosim plus a default wall that has a number scale, very handy when using CFE!
Halfiesezale has an AMAZING default lot, doors, windows, stairs, columns, half walls! Te whole post is a must see, only showing a few things, but maybe grab a cuppa and have a good read through!
Another default for the endless winding staircase and the uprite value column by current pot pie (among a heap of object defaults!)
Slig has defaults for awnings and doors
that ugly glass fence and gate which now looks nice
and those big fat round columns
Slig also has other defaults as shown here
Nathaniel has some h&m wall and floor defaults
and some seasons doors and windows
Celebkiriedhel as default replacements of BG doors
Im sure there is a TON more out there, but thats just a start! Please please remember only one default of any one item at a time can be installed into your game, a good idea is to note down when you download something what item you have a default for, where you got it, and also the name of the original item, that way if you see another you like better then you can easily find the first and delete before putting the new one in.
Take care all