Guide to updating water and electricity in old house renovation | Taipei and New Taipei’s 5 major danger signs + how to make the smartest budget

Old houses have old water and electricity, don’t ignore these signs

In many apartments in Taipei and New Taipei that are over 30 years old, the water and electricity pipelines may have exceeded their safe service life. If the following signs appear, it means that the system needs to be inspected urgently:
• The switch panel is hot, the power jumps frequently, or the voltage is unstable during peak power consumption
• The water output from the faucet becomes smaller and turbid, or the heating efficiency of the water heater decreases significantly
• The socket is loose, the plug is easy to fall off, or the extension cord is softened after use
• There is the sound of running water in the wall, or unknown water stains appear on the ceiling and floor
• Exposed wires, peeling insulation, or a burning smell or abnormal noise in the distribution box

These phenomena may indicate aging of the wiring, corrosion of the pipeline, or insufficient load, which not only affects the quality of life, but also lurks the risk of fire and leakage.
Hot and cold water pipe renewal: Galvanized iron pipes are easy to rust, it is recommended to replace them with stainless steel or PPR pipes to avoid water pollution

✨ Recommended optimization (comfort and energy saving)
• Socket addition and position adjustment: meet the needs of modern home appliances and reduce the use of extension cords
• Smart power planning: reserve smart home lines, or install power monitoring modules
• Upgrade of water-saving accessories: Install water-saving valves and thermostatic faucets to save water and electricity expenses in the long term

Reasonable budget range for water and electricity renovation in Shuangbei old houses

• Renewal of electrical wiring in the entire house: about 9,000 to 13,000 yuan/square meter (including materials, labor, and basic testing)
• Replacement of hot and cold water pipes: about 6,000 to 10,000 yuan/square meter (depending on the pipeline material and construction difficulty)
• Distribution box upgrade + circuit reconfiguration: 15,000~40,000 yuan/household (depending on house type and number of circuits)
• Partial water and electricity update of bathroom: 20,000-60,000 yuan/room (including waterproofing layer repair)

Reminder: There are often hidden problems in the construction of old houses (such as circuitous pipelines in the walls and structural restrictions). It is recommended to reserve 10-15% of the flexible budget to deal with emergencies.

Guide to avoid pitfalls: 3 keys to choosing a reliable plumber and electricity technician

✅ Certificate verification: Confirm that the master has dual licenses of "Indoor Wiring Technician" and "Indoor Plumbing Technician", or professional certifications in related fields.

✅ Transparent quotation: A detailed quotation is required, distinguishing material costs, labor costs, and testing fees to avoid vague and general "fixed price".

✅ Warranty Commitment: Regular operators should provide construction warranties (usually 1 to 2 years), and state the warranty scope and response time in writing.

It is recommended to find a master through local word-of-mouth platforms, community recommendations or professional matchmaking services, and communicate the construction details and acceptance criteria in advance.

Government subsidy information: Taipei City/New Taipei City Old House Repair Subsidy

🏛️ Taipei City "Old House Renovation and Reinforcement" Subsidy
• Applicable to: Old buildings over 30 years old, including exterior wall renovation, structural reinforcement, and water and electricity pipeline renewal
• Subsidy amount: up to 65% of the project cost, with an upper limit of 200,000 yuan per household in general areas, and up to 4.5 million yuan in strategic areas (seismic reinforcement)
• Application method: Apply through the Urban Development Bureau's online system or apply in writing, and you need to check the attached building registration transcript, construction plan and other documents

🏛️ New Taipei City "Old House Life Extension" Program
• Applicable: Old residences over 30 years old, priority subsidies for public pipelines, electric wire renewal and earthquake resistance assessment
• Subsidy ratio: up to 65%, actual payment, payment will be collected upon completion of the receipt
• Consultation hotline: 02-7701-9919, or go to the "Urban Renewal Portal" inquiry area

Subsidy applications usually have annual time limits. It is recommended to prepare documents in advance and pay attention to official announcements to seize the opportunity to apply.

Tips before renovation: Pay equal attention to safety and quality

Updating water and electricity in an old house is not only a budget plan, but also an investment in residential safety. Suggestions during construction:
• Keep the original pipeline configuration diagram to facilitate future maintenance
• Ask the master to conduct electricity and water tests to confirm that there are no leaks or short circuits
• Ask for a material warranty and construction warranty to protect subsequent rights and interests

Smart planning and professional construction make the renovation of old houses an opportunity to improve the quality of life, rather than a burden.