Space requirements vary depending on how many people you intend to have in the theater at one time. Click here for an informational link on seating space requirements and screen comparisons.
Eliminating outside noises is important for an optimal viewing experience. Building that theater away from the HVAC system is ideal but if this is not possible then soundproofing steps must be taken. The sound barrier is usually obtained by using R-19 insulation and QuietRock drywall instead of regular drywall. Keeping the noise contained to the theater room is just as important and can be achieved by laying Acoustipad rubber material on the bottom floor joices in conjunction with the sound barriers on the walls. It is also important to note where air vents are and to relocate them to the walls so eliminate sound leakage. At GCS we are not a dedicated soundproofing company, so if complete containment of noise is required then we do suggest hiring a expert in this field. However most homeowners are not disturbed by the slight vibration and bass that may still occur.
Lighting & seating choices are just about always chosen by the homeowner. Usual lighting options are sconces on the walls, recessed high-hat lighting on the ceiling, and sometimes path lighting is also desired. Star ceilings and soffit lighting are also great, unique options.
Screen and sound options are endless. Usually in a dedicated theater room homeowners will use projector and screen. As for sound usually in wall insulated speakers are used and the typical theater room with use 10+ wall speakers and one or two subwoofers.
Storage is such an important, yet overlooked component of a home theater. A/V components look much better organized on an equipment rack which is located in a storage room or a closet, which can be built if there is not one nearby.