The cost of home decoration in Taipei and New Taipei often starts in the millions, which often frightens homeowners. What’s even more frustrating is that even though we have planned carefully, the budget always goes out of control and overspends like a wild horse at the end of the day. The problem often lies not in the individual prices being inflated, but in the initial planning stages. According to the experience of interior design professionals and consumer dispute cases, budget explosions usually result from several "planning blind spots" that are easily overlooked. As long as you are aware of it in advance and take appropriate measures, you have every chance to control your expenses within the ideal range.
Blind spot 1: Underestimating the complexity and cost of "hidden projects"
The so-called "hidden projects" refer to basic projects that are invisible after the decoration is completed, mainly the comprehensive update and configuration of water and electricity pipelines. Many homeowners, especially those who buy second-hand houses, will focus their budget on visible cabinets, flooring, and paint, thinking that the electrical wiring and water pipes in the old house "should still be functional."
This is a very dangerous myth. Houses in Taipei that are over 20 years old may have wire specifications of only 1.6mm or 2.0mm, which cannot handle the diverse appliances of modern households (such as dishwashers, ovens, and multiple air conditioners operating at the same time), which can easily lead to power outages and even fire risks. Water pipes may still be galvanized pipes that are prone to rust, causing leakage and water quality concerns.
Pragmatic Countermeasures: In the early stages of planning, "full-room renovation of water and electricity" should be listed as a necessary item, and sufficient budget should be reserved (accounting for about 15%-25% of the total project cost). When asking a designer or engineering team for on-site assessment, be sure to open the electrical box and check the pipeline material to obtain the most accurate basis for quotation. This money cannot be saved, it is the cornerstone of residential security and convenience of life in the next ten years.
Blind spot 2: Unprepared for the cost of "design changes"
During the construction process, design changes caused by "sudden thoughts" or "discovering that this is better" are the number one killer of the budget. For example, you may decide to move a wall while the plastering work is in progress, or you may want to increase the number of sockets on the wall only after the water and electricity installation is completed.
Each change meansthat already constructed parts have to be scrapped and redone, materials may be scrapped, and working hours must be extended, resulting in additional dismantling costs, wages and material costs. Many disputes arise from the fact that homeowners think "it's just a little change", but the manufacturer quotes a shocking additional cost.
Pragmatic countermeasures: Before signing a contract, discuss all life details with the designer as much as possible to make the needs concrete. You can draw a simple "life line diagram" by yourself to mark the locations of furniture and electrical appliances. "The pricing method and process for design changes" should be clearly stated in the contract. Any changes require a written quotation and signature confirmation before execution to avoid the cognitive gap caused by verbal commitments.
Blind spot three: only look at the total price and ignore the project details of the quotation
An overly brief quotation that only lists major items (such as "kitchen project", "bathroom project") hides huge risks. For example, if the quote for a "bathroom project" is 120,000 yuan, does it include the construction of the waterproof layer, the brand and model of the tiles, the grade of the faucet, and even the freight for garbage removal? If it is not clearly listed, it is likely that additional fees will be charged for these details in the future on the grounds of "upgrade" or "not included."
Pragmatic countermeasures: Require manufacturers to provide a quotation that is as detailed as possible. The project of each space should be broken down into details such as "demolition, water and electricity, cement work, wood work, painting, cleaning" and other details, and the brand, model, specification, quantity and unit price of the materials used should be noted. Comparing quotations from two or more companies on a "project-to-project" basis can truly reveal the pros and cons and facilitate future tracking and verification.
Blind spot four: Ignoring the cost of "protection works" and "garbage removal"
In construction of buildings in urban areas, in order to avoid damage to public stairwells and elevators, and reduce dust and noise interference to neighbors, necessary protective measures and professional waste disposal are indispensable. This part of the cost is often omitted in the initial estimate, or is only mentioned as vague "miscellaneous expenses". It is only when the community management committee makes strict requirements that it is discovered to be a considerable expense (perhaps tens of thousands of dollars).
Pragmatic Countermeasures: During planning, proactively ask the work team or designer: "Does the quotation include complete public area protection projects (such as elevators and lobby cladding)?" and "How will the decoration waste be disposed of? Does the cost include the cost of legal removal to government-designated sites?" Write these items in black and white in the contract to protect yourself and avoid neighborhood disputes.
Blind spot five: Investing 100% of the budget into the project without leaving an emergency reserve
This is the most direct cause of financial distress. Renovation is like a small project, and there are unforeseen circumstances. For example, after knocking on the wall, it is found that the wall cancer is worse than expected, and unknown cracks in the ceiling of the neighbor downstairs require coordination and treatment. If all funds are invested, there will be no room for turnover when unexpected events occur, and the company will be forced to increase the budget or reduce the quality of other projects.
Pragmatic countermeasures: Follow the "7-2-1" budget allocation principle: allocate 70% of the total budget to "project and main material costs", 20% to "movable furniture, home appliances and soft decoration", and finally be sure to reserve at least 10% as an emergency reserve for "unforeseen expenses". This money is not used to upgrade the material selection, but to deal with emergencies discovered during the construction, making the entire decoration plan more flexible and sufficient.
In summary, the key to controlling the decoration budget lies in "detailed planning" and "risk awareness." By dismantling the quotation, facing up to hidden projects, clearly defining the change process, accounting for all miscellaneous expenses, and retaining reserves, you can transform from a passive buyer to an active project manager. Amidst the high renovation costs in Taipei, you can make the smartest and safest investment and create a home that is both beautiful and secure.
New knowledge on air-conditioning power consumption and Taiwan climate maintenance regulations in recent years (2025-2026 current situation)
With the high temperatures in summer breaking historical records and the adjustment of electricity price structure in recent years, the latest statistics from the Energy Administration of the Ministry of Economic Affairs show that air-conditioning equipment accounts for more than 47% of residential electricity consumption in summer. Many people mistakenly believe that if the air conditioner is not cold, they only need to "replenish the refrigerant." However, in fact, refrigerant is not naturally consumed during normal operation in a closed circuit. If the refrigerant is insufficient, it means that there are micro leaks in the copper pipes or joints. Simply replenishing the air conditioner will only treat the symptoms but not the root cause. Refrigerant leakage will aggravate the high temperature overload of the compressor and shorten its service life.
According to Taiwan's standard operating specifications for air-conditioning projects, it is recommended that professional technicians with a refrigeration and air-conditioning decoration technician license perform "full machine high-pressure water washing and evaporator deep sterilization" every 1 to 2 years for detached air-conditioning indoor units. Especially in the humid summer in the Shuangbei Basin, the air drum and water collection tray are easy to breed black mold and jelly-like biofilm. This is also the main reason for the sour smell in the air-conditioning outlet and the backflow of the drainage pipe. Regular maintenance can maintain CSPF (Air Conditioning Seasonal Performance Factor) level one energy efficiency level, which can save an average household 15% to 20% of air conditioning electricity bills every year.
Autonomous simple maintenance vs professional maintenance safety red line
- Homeowners can do by themselves: Remove and clean the nylon filter regularly every 2 to 3 weeks (rinse with clean water and dry in a cool place, do not expose it to the sun to avoid deformation and embrittlement); clean the air outlet blades of the indoor unit with a dry cloth; check whether there is any accumulation of debris within 50 cm around the outdoor unit that hinders heat dissipation.
- Professional technicians must be entrusted according to regulations: Refrigerant pressure testing and leakage repair welding, high-pressure cleaning of indoor unit air drums and aluminum fins with liquid chemicals, reset of the drainage slope of hidden cold water pipes in the ceiling, and 220V dedicated power circuit configuration and leakage circuit breaker replacement.
