There is an old and very tall elm tree that is 16 feet away from my house. The roots expanded so much they lifted my walkway and my porch, making the walkway tilted and hazardous. It also very likely broke the water pipe feeding my house last year, causing an expensive repair. Finally I am worried that the roots are too close to my foundation and will damage it eventually. I want to take it down but despite all these problems my HOA will not allow me to replace it with a young and less problematic tree. As an expert, can you confirm that this tree should be removed for the sake of safety and my foundation ? I read online that elm trees have invasive roots and should not be planted less than 20 ft away from a house. Pictures: see how my whole walkway is lifted and how close the visible roots are from my porch and house.