$1 to $1.50 per square foot
Every remodeling project associated with small drywall repair priced base on work complexity, time spent, and hourly rate of a drywall installer. Average cost of a new drywall to get installed will vary from $41.5 to $60.0 per 4'x8'x5/8 sheet including labor and materials or from $1.30 to $1.88 per square foot.  However, it would take at least three days of labor to hang, tape and texture this one room project. Using a square foot rate of $1 per square foot, this job would only costs $705 for both, labor and material. Material costs being about $300 would leave only $400 for labor. For a good quality journeyman to spend 3 or more days for both hanging and finishing, $400 is not going to be quite enough. 1 Do-It-Yourselfers can bring the costs down to $150-$250 for a 12x12 room and $1,000-$3,000 for a small house, but hanging drywall requires a lot of heavy lifting by at least two people, and getting a good finish on drywall requires a lot of patience and practice. 1 Patch kits to repair small holes in existing drywall are $2-$20; the more expensive kits contain materials to patch several holes or up to four feet of cracks. 2  Simple repairs can also be made using joint compound ($3-$15), a drywall hand saw ($5-$16) and average household tools such as a hammer, drill and utility knife. 1 Installing new drywall on the walls and ceiling of a 12x12-foot-room with 8-foot-high walls means about 530 square feet of drywall. 2  For about 4,000 square feet of drywall on all the walls and ceilings of a small home, it's $4,400-$8,600 or more. 1 Patch kits to repair small holes in existing drywall are $2-$20; the more expensive kits contain materials to patch several holes or up to four feet of cracks. 2  Simple repairs can also be made using joint compound ($3-$15), a drywall hand saw ($5-$16) and average household tools such as a hammer, drill and utility knife. 1 The actual purchasing and hanging of the drywall is going to cost extra. 2  This is also going to include painting, priming, as well as disposing of older drywall. 3  On average, the complete drywall process is going to cost anywhere from, $0.75 to $1.40 per square feet. 1 This price is not going to include the paint or primer. 2  According to the price mentioned above, a 500 square foot room can cost anywhere from $175 to $400 to tape and finish the drywall process. 3  For those that want to tape the drywall themselves, plan on paying around $0.10 to $0.32 per square foot to complete the job The average costs and materials associated with a project like this would include: 1  The Drywall-The room described above is going to demand around 600 square feet of drywall to cover the walls and the ceilings. 2  These will be sheets sized at 4'x8' and cost around $9 each. 1 Lastly, the tape used to cover the joints between the sheet rock costs only $4.50 for every 150 feet, and a single roll should complete this project; and. 2  The Labor-At HouseFlippingHelper.com it states that the homeowner who pays roughly $25 in total costs per sheet of drywall is getting a cheaper price. Cost breakdown. Generally, the typical room insulation costs will include: 1  The Ceiling or Attic-according to the HomeInspectorLocator.com website the costs for insulating the attic area to modern standards are from $1 to $1.50 per square foot. 2  This assumes that it is a DIY project and uses R49 value insulation.  1 The Drywall-The room described above is going to demand around 600 square feet of drywall to cover the walls and the ceilings. 2  These will be sheets sized at 4'x8' and cost around $9 each. 3  This means that roughly 20 sheets are required for this project, which will cost around $180 total. 1 Lastly, the tape used to cover the joints between the sheet rock costs only $4.50 for every 150 feet, and a single roll should complete this project; and. 2  The Labor-At HouseFlippingHelper.com it states that the homeowner who pays roughly $25 in total costs per sheet of drywall is getting a cheaper price. You’ll need eight 4-by-12 drywall panels for the four walls and three panels of the same size for the ceiling. While construction materials fluctuate, sometimes from one day to the next, as of October 2011, a 1/2-inch thick panel cost about $10.50, so expect to spend about $115 for the panels. 
http://www.rempros.com/installation-prices/cost_to_install_drywall.html http://drywall101.com/articles/cost.php http://home.costhelper.com/drywall.html http://home.costhelper.com/drywall.html http://www.howmuchisit.org/cost-to-tape-drywall/ http://www.fixr.com/costs/drywall-installation http://www.fixr.com/costs/room-insulation http://www.fixr.com/costs/drywall-installation http://www.ehow.com/info_12140166_cost-drywall-12by12-room.html
cost to drywall a room