Too many industry professionals think ZNE new homes and ZNE retrofits, are a technical problem - when the most significant barrier is really a people problem - or actually a set of people problems.
These people problems include:
The residential construction industry continues to operate as a series of hand-offs; the designer hands-off to the builder, who hands-off to the subs, etc. This succession of hand-offs eliminates any cross-trade opportunity for improvement. The newer concept is Integrated Project Design and Delivery - working together to capture cost effective opportunities.
Competing only on price (low bid) and not considering delivered performance has kept homes cheap but not cost effective.
As we compete on cost only, there is no budget for training so we stick to what we know.
Can we really expect a high performance home when home builders make more money by hiring the lowest bid energy feature subcontractors?