Hi :) So my idea has evolved. I've made it more dimensional. The echo only shoots upward, instead of both directions. The echo is transformed into an arrow-like shape as it gets towards the top...As to symbolize leadership, direction and literally building up. The base of the building are your business acronyms "E" and "B". They are somewhat abstract, but are still recognizable as letters and blend into the design seamlessly. I chose a wider and heavier font because I thought it would compliment your industry more.
This is a variation of my last concept. This is more of a office building and house hybrid. The top elements serve as the roof to the house and the upper floor of the office building. I did this edit to give more emphasis on residential construction.
Another interpretation to the acronyms is that it can simply be two E's. The E reflecting the other E can also be a play on your biz name "Echo"...They echo each other.