Pretty common now. I used to work a lot of new construction while I was still in college (and even quite a bit during summers in high school), but when the housing market took a nosedive back in 2008 or so, new construction jobs became a rarity and the basis of my work has been remodels, replacements, and additions. Some jobs are really nice to work on, while others are either so-so or just dumps... Sorry if that sounds harsh of me to say about my work, but I've never liked having to redo jobs that either my dad installed years ago or ones that someone else did that we have to contend with now.