When a building says it needs repair, how do you do it?. I see nothing to click on to repair it. Im in tier three, have hundreds of people, and most my homesteads need repair, and then become abandoned, then I have to rebuild them.
Have materials, builders and labourers not doing other stuff and also have the auto upgrade button on the top right of the screen enabled. Also check the desirability of the houses, they may need a boost with some more decorations around them.