There is a common saying in the renovation industry: "If plumbing and electrical work aren't done right, everything else is a waste of effort." As "hidden works" (infrastructure concealed within walls and floors), these systems affect not only daily comfort but also safety; errors can lead to costly and frustrating repairs that require tearing down walls or ripping up floors. Faced with a maze of potential outlet locations, a dizzying array of planning strategies, and an overwhelming selection of materials, many renovation novices feel lost. How do you determine locations that actually suit your lifestyle? What priorities should guide your planning? What pitfalls should you avoid when choosing materials? This guide breaks down the three core aspects—positioning, planning strategy, and material selection—to clarify the essentials of plumbing and electrical renovation, making it easy for beginners to follow along.
Proper positioning is the foundation of plumbing and electrical work. The core principle is "people-centric design": meeting current daily needs while anticipating future requirements to avoid issues like insufficient outlets or awkwardly placed sockets later on.
Preparation before positioning: Plan your furniture and appliance layout first. Before finalizing locations, communicate clearly with your designer and contractor about furniture dimensions and placement, as well as the types and installation requirements of your appliances. For instance, you can only accurately position outlets behind or near a sofa, bed, or wardrobe once their locations are set. Decide in advance if you plan to use devices like robot vacuums, water purifiers, instant hot water dispensers, or smart toilets, and reserve the necessary power and water connections. It is recommended to sketch a floor plan marking the locations of furniture and appliances in each room, then verify these details on-site with the construction team.
Key points for precise positioning by room—Living Room:
Install one or two 5-hole outlets (with USB ports) on each side of the sofa to accommodate mobile phone charging and floor lamps. Reserve three or four 5-hole outlets on the TV wall to power the TV, set-top box, sound system, and other devices. If you plan to install a projector, reserve power outlets for both the projector unit and the motorized screen. Place the air conditioner outlet above and to the side of the indoor unit. Bedroom: Install a 5-hole socket and a two-way switch on both sides of the headboard for convenient light control before sleep; provide 1–2 sockets near the foot of the bed or the vanity for appliances like hair dryers or humidifiers; and include dedicated power outlets inside the wardrobe if you plan to install motion-sensor lights or a dehumidifier.
Kitchen: This is a high-demand area for utilities. Place 2–3 sockets under the sink for a water purifier, garbage disposal, and under-sink water heater; install a socket on either side of the cooktop for small appliances like rice cookers and microwaves; and provide a dedicated, independent socket for the refrigerator to avoid sharing a circuit with other appliances. Regarding plumbing, confirm the locations for hot and cold water connections and ensure inlets and outlets are ready for the dishwasher and water purifier.
Bathroom: Install two sockets under the vanity for a washing machine, electric toothbrush charger, etc.; place a socket with a waterproof cover next to the toilet to accommodate a smart toilet; and install a waterproof socket near the shower area for a hair dryer (ensuring it is positioned away from direct water sources). For plumbing, keep hot and cold water lines separate and precisely position the connections for the shower, bathtub, and sink to avoid installation issues later.
Anticipate future needs: Look beyond immediate requirements and consider future improvements to your quality of life by building in some "redundancy" during the planning stage. For instance, include 1–2 spare sockets in the living room and bedrooms to avoid power shortages when adding new appliances later; provide power and plumbing connections for a washing machine and dryer on the balcony—even if you don't buy a dryer now, this leaves room for a future upgrade; and install multiple socket groups in the study to meet the power needs of computers, printers, routers, and other equipment.
