In this particular scenario.
Bathroom is not hideous but in poor condition, installed by bodge-it-Bill previous owner. Tiles have fallen off the wall and smashed and fittings aren't done properly. Have already had one leak through to floor below. The rest of the house is freshly decorated and worried it will impact value. May move in next 2-5 years or may not.
Income is likely to drop over next few years due to potentially having children. Bathroom will need to be funded by remortgage, so it's do it now, or leave it. Bit worried it will struggle to sell in future with patches of no tiles on the walls, and they cannot be replaced. I guess if we do it now we can enjoy it for a bit. Also bit worried about remortgaging due to brexit uncertainty, but the existing mortgage is fairly low.
On one level, not especially bothered, but don't want a headache further down the line. Any advice?