Why would you want to know this? The only way to find out is to ask the carpet installation place.
Depends on which one you choose. Price per sq. ft usually includes installation but varies with the carpet.
$1550 uninstalled with pad, $2025 installed with pad
There really is no such thing as "builder grade " carpet. The closest definition would be low cost carpet. When buying carpet the general rule is the more it costs the better the carpet. The cost for installation is a bit trickier because installation prices can vary widely from area to area and also depends on what the installer will be doing ie; wood floor or concrete, a lot of seams, hiring a helper, etc. Unlike buying carpet paying more doesn't necessarily mean a better installation. So, the answer to your question in my opinion and in my area of the country would be about $9 per square yard for carpet and installation (not including padding). But at those prices I honestly wouldn't expect much.
Many companies will wave the installation fee if you buy carpet through them. If you decide to have someone else install it, you could expect to pay about $4.00 per square yard for the carpet, and another $.50 for foam installation.
When you are choosing new carpet for your home, you will also need to consider the costs for the installation of your new carpet. If you install the carpet yourself, you will also need to purchase carpet matting and tack strips as well as any tool costs associated with installation. Sometimes the matting will come with the purchase of the carpet. You will need to consider any labor costs if you hire a professional to install your carpeting. You can save money by looking for deals at your local home improvement stores that offer free or low cost installation with your carpet purchase.
$30.00 per yard.
I am getting new carpet installed, what should I do to prepare myself for new carpet installation? What should I do to have my house ready for new carpet installation?
A $25 a yard carpet = $2.77 per sq ft. 25 / 9 = 2.77
It depends on how big the carpet is.
Measure the area of the space to be covered. Multiply by the cost of the unit area of the carpet. A typical economy carpet at Lowe's is about $2.25 per square foot including pad, plus $97 for installation of any number of rooms. A pretty nice carpet runs about double - around $4.50 per square foot. If you need only carpet for one room (up to about 12' by 18') a remnant store is your best bet. A typical one room price is about $150 or so plus installation.
One can compare carpet installation prices online at various websites. One can compare carpet installation prices at Homewyse and CarpetCostEstimates.