What sort of state is the house in? You say it is large, with a large garden and the bills are high, but is it comfortable and pleasant to live in, and well-maintained, or is it cold, inefficient and in need of updating? Would he spend money on it to make it easier to run?
Think about how you would live should you split. He certainly can delay the divorce as he does not want one and he controls the purse strings. Could you manage on your income without his support until the house is sold?
Has the marriage irretrievably broken down? Is the argument about the house the only bone of contention, or are there others? Is he terrified of change and fearful of the future? Are you just a tiny bit dictatorial?
Many points to consider before you (possibly) jump out of the frying pan into the fire.