My Wife Built A House Without My Permission, Please Help!!!

Dear Readers, I have seen similar threads on this topic before but never imagined it could happen in my marriage. My wife and I have been married for about 10 years now and we have been blessed with both male and female children. For the first 7yrs of the marriage, I earned about 8x my wife's salary and everything was sweet and rosy. We were the envy of most families with houses and landed properties both in the village and the city where we live. But about 4yrs ago, my wife got a better job which made her salary slightly higher than mine. But more importantly, the new job gave her access to bulk money by way of loans, grants, etc and ever since, my family has never been the same again. My wife suddenly became unruly, she doesn't consult me on any issue concerning the family again. I have sat her down on countless occasions to know what the problem is but she refused to say what is responsible for her sudden change in attitude. Even when I seek her opinion on projects concerning the family, she shows indifference most times. I then resolved to continue to engage her and be as open as I can hoping that things would improve and indeed I really noticed some slight improvement. But when I was about to settle down and relax, I got the shocker of my life -my wife had built and completed a building without my knowledge! As if that was not shocking enough, I later found out that the man who has been fronting for her on the said project is the same Priest (Reverend Father) that joined us in holy matrimony!!! I am really confused right now, having mood swings between laughing and angry at the same time. I just don't know how to handle this.