How do I choose the right size Room AC? Choosing the right size when shopping for a room air conditioner is extremely important. Units that are bigger than necessary may not be able to remove the humidity effectively, resulting in an uncomfortable room. The Best Way to Determine the Right Size for AC. 100   to 150     sq.ft = 5000   BTU 400   to 450     sq.ft = 10000 BTU 700   to 1000   sq.ft = 18000 BTU 1500 to 2000   sq.ft = 30000 BTU When do I get my electrical and gas utilities turned on?   Generally, when a building project is completed, and all of the required Departments have granted a final approval for the project, the Building and Safety Division will release electrical and gas clearances to the utility providers so that they can work with the tenant or owner to schedule a turn on date.   What is a Certificate of Occupancy? A Certificate of Occupancy is a legal document that is issued by the Building and Safety Division which certifies that a specific building has been inspected by all necessary City Departments and that it complies with the applicable regulations. Who can draw up a set of building plans?   Plans for simple projects such as small single story houses, room additions and garages can usually by drawn up by qualified individuals such as draftsmen. Assuming that these simple projects are constructed within the parameters of the Residential Conventional Construction Requirements, engineering calculations to support the design will not be required. When are plans required for a new tenant to occupy an existing building or tenant space?   Generally, plans are required whenever it is determined that a building permit is required for a new tenant to occupy a building or tenant space. When additions or alterations to the building are proposed or the intended use of the building or tenant space presents special Fire or Life/Safety concerns. Will you be using subcontractors on this project? If yes, ask to meet them, and make sure they have current insurance coverage and licenses, if required. Also ask them if they were paid on time by this contractor. A "mechanic’s lien" could be placed on your home if your contractor fails to pay the subcontractors and suppliers on your project. What types of insurance do you carry? Contractors should have personal liability, worker’s compensation, and property damage coverage. How close to my house can I build an accessory building? Your home and accessory building can either be attached or separated. However, fire resistive requirements will apply if they are separated by less than six feet. What is the new code requirement for installation of smoke detectors? Does the code regulate the placement of the smoke detectors? Alarms in existing area are not required to be interconnected and hard wired where repairs or alteration do not result in removal of interior wall or ceiling finishes, unless there is an attic, crawl space or basement available which could provide access for hard wiring and interconnections without removal on interior finishes.