Iscuss the reasons why all new buildings should be eco-friendly

For and against/discussion essay

Instruction:
Green buildings have become a hallmark in the field of construction.They are designed as an architectural solution for home building in environmentally sensitive location, with the least energy consumption and minimal disturbance on the environment. However to build all the new buildings as eco-friendly is still not widespread, the reasons for this varied from cost inefficiency, to low aesthetics standard. This essay aims to discuss the reasons why all the new buildings should be eco-friendly, from both for and against aspects, and eveluate possible solutions.

Needs:
clear structure.
discuss both sides.
strong evidences.