A Btu (British Thermal Unit) is the amount of energy required to raise the temperature of one pound of water one degree Fahrenheit. Table 1 shows the Btu value for various energies. To compare the values on a propane equivalent we first convert the values to a MMBtu (1 million Btuâs). You take the energyâs price and divide it by its MMBtuâs. Natural gas is priced on a MMBtu basis. We then multiply the amount of propane Btu content per MMBtu (.0915) to get the propane equivalent value.
Primary factor, specifications of in the room addition plans. Examples: 1  Home addition cost estimates of $80 to $130 per square foot for a basic family room addition is common. 2  If the home addition includes a bathroom and/or a kitchen, the room addition costs can easily escalate to $200-250 per square foot. The above figures place the cost of the addition at $124 per square foot. 2  This pricing structure assumes that carpenters charge an average of $70 per hour, electricians between $65 to $85 per hour, and painters between $20 and $35 per hour.
The average cost per square foot to build a home in Indiana is  about $132 per square foot. This means a 2500 square foot home  would cost around $330,000 to build.epends on class of home, size of home, location of home and age. My wife and I recently went look at a home that just finished construction a few months ago in central Lafaye â¦ tte, LA that was about 1550 total sq ft and 1220 living. The cost for this home was $115 per square foot.