The four suggested causes cited by the RBC report are valid but miss other causes of high house prices. One is the size and nature of new homes. People could live well in a smaller square footage, and don't need designer kitchens, 4 bathrooms, and showers with 5 people. People used to design their own homes, and many built them. Now, we buy more than we need, with less choice and manufactured homogeneity, and the developers, builders, and mortgage holders get rich. Blaming the Greenbelt is just a convenient excuse for a myopic industry.