If the renovation counts as an "improvement" rather than a repair, wouldn't I have to count the days I was at my rental home as personal days even if I was there managing the improvements? IRS 527 states that days used for repairs and maintenance do not count as personal use days, but does seem to imply that days spent working on improvements do count as personal days. I don't have any expertise in this area but that seemed to me to be what 527 says.
