A company normally sells its product for $20 per unit. However, the selling price has fallen to $15 per unit. This company's current inventory consists of 200 units purchased at $16 per unit. Replacement cost has now fallen to $13 per unit.
Install Roof Shingles Cost. Typical cost to have roofing shingles installed in San Antonio, TX is around $80 - $100 (per square, asphalt). Roof Replacement Cost. Typical cost to have roofing replaced in San Antonio, TX is around $5,760 (24'x45').
As you can see, there are many factors that determine the cost per square foot in construction. If you are trying to determine a price per square foot for budget purposes, I would say that about $120 per square foot is about average here in San Antonio, Texas.xample: If you have a construction total of $200,000 and you are building 1,800 square feet you divide $200,000 by 1,800 to get $111.11 per square foot (200,000/1,800=111.11).