How much does it cost to add a home theater room?
Adding an entire room to the home can be a challenge, and for this discussion we will look at the costs and requirements for the addition of a 16' x 25' room (on a crawlspace foundation) which will function as a home theater. This means that exterior walls and the ceiling will use basic soundproofing techniques.
The prices discussed will not take into consideration the electronic components used to complete that actual theater, but will simply consider construction and finishing expenses. This type of project will not be considered a "DIY" project in the least, and several contractors will be necessary for the job (carpentry, installation, electrical, etc.).
According to Hanley Wood and their "Remodeling" magazine the average home theater addition in a new room added to the home, finished with drywall 1, functional doors and windows, and soundproofing will cost $82,756. The resale value of this update would hold at $54,051, or a roughly 65% return on investment.
The above figures place the home theater addition at $207 per square foot. 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.
What needs to be included:
- Architectural design services to ensure that the home entertainment room is housed in a structure in a style appropriate to the existing house, and up to code for the neighborhood or area in which the home is located. This should require no more than 10 - 17% of the total building budget;
- Pour concrete footings 2 and slab if no crawlspace foundation exists - Average price of concrete is $75 per cubic yard, with piers and the full slab it that would require roughly 16 cubic yards and would cost at least $1200;
- Build roof trusses 3 and support beam system and tie into existing house - lumber prices will vary as will the design used by the carpenters constructing the home theater. The project should require 2x4 wood framing with a 2x6 bottom plate upon which alternating studs are added to provide a sound barrier, along with OSB structural sheathing;
- Install vinyl 7 siding and trim - Average price of $7 per square foot installed, and for the 730 square feet needed, this would total $5100;
- Finish ceilings and walls - Drywall 1 throughout would require 33 panels of 4'x8' for walls and ceiling at $11.80 each (plus screws, nails and finishing compound) for an approximate total of $390 plus approximately 24 hours of installation;
- Fiberglass 8 wall and attic insulation with R-38 value will cost $1.80 per square foot (installed) $1070;
- 2 six-panel primed hardboard doors 9 - Average of $178 each for a total of $356 plus six hours of installation;
- Install one 3'x6'8" exterior door with half-glass and lockset - Average of $250 to $1000 depending upon the style of the door;
- A snap-together laminate flooring system - Average of $7 to $11 per square foot at 400 square feet for a cost of $4400 installed;
- Four new windows - Average price of $300-$700 per window, plus installation time of two to five hours per window. Be sure that the windows purchased will qualify for tax deductions;
- Tie into existing HVAC - Average cost will vary according to pre-existing system, but all sound-dampening methods should be discussed;
- Provide electrical wiring and lighting to code - This is going to depend upon the amount of work required, but electricians average from $65 to $85 per hour. This project might be priced on a per item basis, or the electrician might simply base it on the square footage; and
- Provide carpentry to code - This is going to depend upon the amount of work required, but carpenters average $70 per hour. This project might be priced on a per item basis, or the carpenter might simply base it on the square footage.
Additional considerations and costs
- Removal or modification or pre-existing porch or deck over crawlspace foundation;
- 12 recessed ceiling lights; and
- Painting of trim and walls.
You may want to check out our 3D Home-Theater Infographic
Remodeling Terms Cheat Sheet
Definitions in laymen's terms, cost considerations, pictures and things you need to know.
See full cheat sheet.
: Type of plasterboard, commonly used to build walls and ceilings, composed of gypsum that is layered between sheets of heavy paper
: A support for the foundation of a house that also helps prevent settling. It is typically made of concrete reinforced with rebar, but can also be made of masonry or brick. It is usually built under a heavier part of the house like a wall or column, to distribute the weight of the house over a larger area.
: Structural framework used to support a roof
: A viscous, black mixture of hydrocarbons often used for roofing and waterproofing. It is also used in asphalt for paving roads
: A smooth, uniform, flat piece of construction material, available in a wide variety of materials and laid in a series of overlapping rows, used to cover the outside of roofs or walls to protect against weather damage and leaks.
6 Metal flashing
: A thin sheet of metal used around the edges and junctions of the roofing material,such as around a chimney or vent, to prevent water from entering the structure through those joints
: A synthetic plastic made from ethylene and chlorine. Vinyl has many applications in the construction industry and it is widely used in sidings, window frames, roofing and gutters, among others
: Plastic that is reinforced with glass fibers. The fibers may be mixed randomly throughout the plastic, or come in the form of a flat sheet, or be woven into a fabric
9 Hardboard doors
: A door finished with a surface made of high-density fiberboard, an engineered wood product also called hardboard, and factory painted to look like wood. This term can also refer to a door with a solid hardboard core and wood veneer panels
Cost to add a home theater room varies greatly by region (and even by zipcode). To get free estimates from local contractors, please indicate yours.