During the electrical wiring phase of the building, the contractor responsible for the air conditioning system begins its work by installing air conditioning outlets in accordance with the approved plan, which specifies a central, concealed air conditioning system, wall-mounted, ceiling-mounted, and duct-mounted units, so that the electrician can connect the electrical wiring to all air conditioning points. The wire gauge must be specified by the air conditioning company based on the capacity of each individual unit, while ensuring the integrity of the air conditioning pipes installed during the structural framework phase to prevent blockages, The copper piping for the air conditioning units should be pulled only to the absolute minimum extent during this phase, specifically when the air conditioning pipes are not straight or when the location of an air conditioning unit within the room is changed from the location of the previously installed pipe. If security systems, surveillance cameras, or smart home systems are present, the necessary installations for them are carried out during this phase, provided that the installation is done according to a plan prepared by a company specializing in security systems and surveillance cameras. Installation is typically performed by the project’s electrician, and the costs of these installations are usually specified in the contract; if not agreed upon in advance, the costs will be negotiated during this phase.

Upon completion of all installations related to plumbing, electrical, and HVAC work, all of these works are inspected on-site to ensure that everything specified in the plans, project specifications, or the owner’s requests has been implemented, in order to avoid future demolition work.

Next, a contract is signed with a company specializing in plastering work; It is advisable to carefully seek out a contractor who specializes in and excels at high-quality plastering, as plastering is the first and very important step in the finishing and cladding of a building, which helps prevent any structural defects in the building’s framework "Al-Azm": We can identify a good contractor by visiting existing projects or asking those who have gone through the construction process during this period, as well as consulting specialists in this field, It is also essential to view the contractor’s work on-site during this period and ask the owners of those projects about the quality of the work, as well as the contractor’s level of commitment and reliability, and to ensure that the contractor is affiliated with a «established company,» and the contract must be drawn up clearly specifying the financial costs, obligations, and responsibilities of both parties—the owner and the contractor. It is not advisable to award the plastering work to a contractor who supplies the materials; it is better to award the work to a plastering contractor «labor-only» without materials. It is important to specify how the work will be calculated per square meter for the facades and interior of the building according to the agreed-upon price per square meter, and to emphasize the importance of having each phase of the work approved by the supervising engineer.