Good morning, Accuy.
The glass tower toppling strikes a chord within me. It sounds like a career within a company: racing to the top to avoid drowning (in debt or a dead-end job), only to see the entire thing fall apart. Instead of a glass ceiling, the intire structure is glass, indicating restriction on all sides, not just the top.
You're male in the dream; many people believe that a woman must act like a man to succeed in business.
When you do fall, the water is not as dangerous as you had thought, but now you take refuge in a someone else's home - again out of fear of the tidal wave, but this time it never comes.
Also, you are not truly safe, for you must stay on the roof because someone disagrees with a part of your personality with which you will not part (the dog). It is possible that you have been letting fear control your decisions.