Point is that geography dictates the supply and demand of available housing. Texas is flat and land rich. California, Manhattan/NYC, and the DMV are not.
Yes, mostly an area driven phenomenon, usually focused on cities or geographic features like a coast or mountains. Put all three close together and it turns into $$$ dynamite.
My kids house in Austin, Tx has increased (edit: $575K in market value since they bought it for 925K two years ago. Our major cities are built out also. The only thing keeping in city house price inflation somewhat under control is our cities are not land locked. Not unknown here for lower incomes to buy as far as 50 miles or farther out of city and commute.