There have been many ice ages during the last 2.6 million years but when people talk about the Ice Age, they are often referring to the most recent glacial period, which peaked about 21,000 years ago and ended about 11,500 years ago.
It costs roughly â¦ $11-$13 for the materials and contractors average about $5-$8 per square foot for labor, not including steps. For example, my company charges approximately $18 per square foot to build a deck.
Subject: Cost of building deck. This is in reply to your Angie's list post which is months old but an easy way for you to bid a price is to double the cost of material. If the material was $1800 you charge $3200-$4000.