Op sounds like H was trying to please you and make you happy, but meanwhile he realised the financial implications of this, he wasn't able to say no, stop now let's looks at this, let's be realistic,
H gone running for the hills ' panick '
You do realise how this happened, so question now is, what are you going to do , you need to speak to H and make a plan, whether that being a financial plan, but what about your marriage, it's OK to disagree or upset our/ your H when making decisions big financial decisions, you need a plan how to sort this mess out op, definitely not spending anymore money on house, live as it is, make do with what you have, and God only knows, you learn to paint, get H on board,
Right now you have an house, no home, because you're been so busy making it your forever home, happiness makes it a home, having someone to come home too, forget all the material things they come and go,