Most detached houses and villas in Taiwan are over 30 years old.Renovation and alteration of townhousesIt's not just about improving living quality; it's also a way to increase asset value. Especially with land and housing prices continuing to rise, more and more people are turning their attention away from buying new homes and towards other options.Renovation costs for 40- or 50-year-old detached housesas well asSubsidies for renovation of old detached housesThese are issues that the aim is to redefine residential space through renovation. From...Modern townhouse exterior designarriveOld house renovation and decoration,Luxury villa decorationThese needs are gradually becoming a key focus for homeowners when planning renovations.
Must-read before renovating a villa or townhouse: Three things to keep in mind when renovating an old townhouse!
Before undertaking any renovation project, the most important thing is not to choose a style or look at examples, but to return to the "essence of the house" itself. If the basic problems are ignored when renovating a detached old house, even the most exquisite decorations may just be superficial.
Important Considerations for Renovating an Old Town House: Structural Safety and Seismic Resistance Assessment
Many early buildings in Taiwan did not take modern earthquake-resistant codes into account, especially detached houses that are 40 or 50 years old or older, often exhibiting exposed rebar and deteriorated concrete.Foundation subsidenceThese structural hazards may not be visible to the naked eye, but they can directly affect residential safety.
Before undertaking any renovation of a villa or townhouse, it is recommended to have a professional structural engineer or construction team conduct a comprehensive assessment, including the load-bearing capacity of beams and columns, floor slab strength, and overall seismic resistance. If the assessment results indicate that the structure cannot be reinforced, the decision to proceed with a "reconstruction" approach should be reconsidered to avoid future risks.
Second point to note when renovating a detached old house: Complete overhaul of water and electricity lines
Old and worn-out plumbing is the root cause of most housing problems, including leaks, power outages, and even fire risks.
A complete renovation of an old house should include a complete overhaul of the water and electricity systems, and a redesign based on the needs of modern living. For example, modern families have higher requirements for the number of electrical outlets, network cabling, and integration of smart home appliances. If these are not addressed during the renovation, the cost of future modifications may be even higher.
Third point to note when renovating a detached old house: legal restrictions and building coverage ratio issues
Renovation and refurbishment of detached houses often involve building codes, such as...Building coverage rateThere are restrictions on floor area ratio and height, among other things. In addition, many older houses have unapproved additions (commonly known as illegal structures), which may be required to be demolished during the renovation process if not clarified in advance, affecting the overall planning.
It is recommended to collaborate with a professional design firm or architect in the early stages of planning to confirm the current compliance status and assess the feasible design scope, such as with a professional team that has integrated design and engineering experience (e.g.,B-StudioArchitectural design firms typically assist homeowners with legal and spatial integration issues in the early stages to reduce subsequent risks.
What are the differences between a townhouse and a villa? The renovation strategies are quite different.
Before undertaking renovations, understanding the difference between detached houses and villas is not just a matter of terminology; it directly impacts your budget allocation, design direction, and even crucial decisions about whether to "renovate" or "remodel."
Difference between townhouses and villas: Land and space usage
The renovation of townhouses varies depending on their location. For example, in urban areas, older townhouses often have small plots of land and close proximity to other houses. Renovations in these townhouses focus on internal optimization and vertical circulation optimization, such as adjusting the location of staircases, planning mezzanine floors, or integrating multi-functional spaces.
In addition, because windows cannot be opened on the sides, long, detached houses often face problems of insufficient lighting and poor ventilation. Therefore, when renovating old detached houses, natural light is introduced and air circulation is improved by openings in the atrium, courtyard, and floor slabs. These designs often require professional planning within the limits of the structure.
In contrast, villas are typically located in redevelopment zones or suburbs, with larger sites and setbacks around the buildings. When converting a detached villa, not only can a front yard and backyard be planned, but driveways, landscaped pools, or outdoor relaxation areas can also be added to create a greater connection between indoor and outdoor spaces.
Difference 2 between townhouses and villas: Exterior design and style positioning
In modern detached house design, the primary goal is to improve the old appearance, such as renovating the facade, updating materials, and simplifying lines, so that the original old exterior walls can be transformed into a modern style.
Common practices include using exposed concrete, cement plastering,Culture StoneAlternatively, aluminum grilles can be used, along with enlarged windows in certain areas, to improve overall lighting and visual openness. However, since most townhouses are located in existing street blocks, the exterior design still needs to consider its harmony with the surrounding buildings to avoid being too abrupt, while also complying with local building codes.
In villa renovations, the exterior design plays a more prominent role in shaping the overall image. For example, in the decoration of luxury detached houses, the style is unified and a complete living aesthetic is created by considering everything from the building's proportions, facade materials, lighting design to landscaping.
This also means that villa design often needs to be approached from an architect's perspective, rather than simply extending from interior design. This is especially true for design teams with the ability to integrate architecture and space (such as...).B-StudioTypically, the planning is done in sync from the exterior to the interior to ensure a consistent overall style, rather than separate designs that result in stylistic differences.
Difference 3 between townhouses and villas: Renovation budget and construction scale
Renovations of older detached houses are mostly function-oriented, such as reconfiguring the kitchen and bathroom, optimizing storage space, or improving lighting conditions. The work focuses on interior and partial exterior repairs. However, when structural reinforcement or major changes to the layout are involved, the cost can rise rapidly, especially in the renovation of 40- or 50-year-old detached houses. If plumbing and electrical upgrades and structural reinforcement are carried out at the same time, the overall cost is actually no less than that of a small renovation project.
In contrast, villa renovations aim for a holistic upgrade from the outset, encompassing architectural remodeling, landscape design, and equipment upgrades (such as elevators and smart home systems), with the scope of work spanning the building, indoor and outdoor spaces.
It is recommended to find a team that integrates design and construction, so that the budget, schedule and design consistency can be controlled simultaneously from the beginning, avoiding additional costs or design discrepancies later.
Renovation case of a detached old house:
The age, layout, and living needs of different houses will influence the planning direction of renovation for old detached houses. From structural reinforcement and space reorganization to modern detached house exterior design, the focus of each renovation case is different.
Renovation Case Study 1: Old House in Beidou, Yunlin
The old house, full of memories, was demolished and rebuilt, and has been reborn as a place for family gatherings of three generations, satisfying new living functions and allowing people to relive old memories. It is a Lin family mansion that continues to hold memories.
The air flow, light and shadow intertwined by the clear water mold building, sunlight and time give people a gradual flow of time. Coupled with warm wooden furniture, it calms the mind and creates a simple volume with a soft atmosphere that echoes nature.
Renovation Case Study 2: F House, Qingshuifu
Because the site is located in a quaint old street, the architect used clear water molding materials to create a low-key and textured Tuotian Villa. It forms a dialogue between tradition and modernity with the third-level historic site Lin's Ancestral Temple to the north. The internal planning echoes the simple texture of clear water molding. It is a classic design case of clear water mold architecture.
Analysis of renovation costs for old detached houses: How much difference is there between 40-year and 50-year old houses?
Cost is the biggest concern for most homeowners, but in reality, renovation costs vary greatly, depending on the condition of the house and the extent of the renovation.
How to calculate the renovation cost of a 40-year-old detached house?
Forty-year-old detached houses represent the most common type of house requiring renovation in Taiwan. While the structure of these houses is mostly still usable, the plumbing and electrical systems are outdated and the layout is not suitable for modern living. The focus of renovation will be on upgrading functionality and reorganizing the space.
Based on current market conditions, the cost of renovating a 40-year-old detached house can be roughly divided into three levels for assessment:
- Basic renovation (approximately NT$80,000 to NT$150,000 per ping)
Suitable for those with limited budgets or for rental purposes, mainly involving water and electricity upgrades and basic renovations (flooring, paint, bathroom fixtures replacement), without major changes to the layout. Overall, the focus is on livability and durability, with a relatively low level of design.
- Moderate renovation (approximately NT$150,000 to NT$250,000 per ping)
This is currently the mainstream approach in the market, and it typically includes layout adjustments, kitchen and bathroom renovations, storage system planning, and improvements to lighting and ventilation. For example, adding a patio or open-plan design to a townhouse will involve some wall demolition and structural assessments, thus significantly increasing the cost.
- High-standard renovation / near-luxury level (NT$250,000 to NT$400,000 or more per ping)
In addition to basic construction, it also includes exterior facade renovation, imported building materials, custom furniture and smart home systems, and may even include the addition of elevators or large glass facades. This type of project is close to the level of "small townhouse renovation", and the overall budget usually exceeds ten million.
For example, a detached house with a land area of 20 ping (approximately 66.6 square meters) and a building area of about 50 to 60 ping (approximately 25 to 30 square meters) would have a total budget of about 8 million to 15 million NTD for a moderate renovation; while a high-end renovation could cost 15 million to 25 million NTD or more. Therefore, whether or not the layout and appearance are altered will be the biggest dividing line affecting the cost.
Differences between renovation and alteration costs for a 50-year-old detached house
When a building is over 50 years old, the cost assessment logic can no longer focus solely on the renovation unit price, but needs to further consider the overall cost-effectiveness of "renovation vs. remodeling".
In terms of market conditions:
- Renovation cost of a 50-year-old house (approximately NT$150,000 to NT$300,000 per ping).
Since most renovations require structural reinforcement (such as strengthening beams and columns, and foundation reinforcement), coupled with a complete overhaul of plumbing and electrical systems and a remodeling of the layout, the price per unit will be significantly higher than that of a 40-year-old house. If the house is in poor condition, the renovation cost may even approach the price of rebuilding.
- Renovation costs (approximately NT$250,000 to NT$500,000 per ping).
Renovation requires demolition and reconstruction and a new building permit application. Although the initial cost is higher, the building height, parking space and circulation can be replanned in accordance with modern regulations, and structural and aging problems can be solved in one go.
In reality, the more common situation is:
When renovation costs approach 70% to 80% of the redevelopment cost, most professional teams will recommend redevelopment, as it offers advantages in the long run in terms of lifespan, resale value, and living quality. Therefore, renovating a 50-year-old detached house is not simply a matter of comparing which option is cheaper, but rather requires an assessment based on the cost of use over 10 to 20 years. This is why many design firms assist homeowners with comprehensive cost calculations and comparisons of different options from the outset.
Key factors affecting costs
Even for houses of the same age, the cost of renovating a detached house can vary by millions of dollars, mainly due to the following factors.
1. Building structural condition
If seismic reinforcement or foundation strengthening is required, the cost will increase significantly, and these types of projects are usually indispensable and are among the most easily underestimated costs.
2. Design complexity and scope of layout adjustment
The cost difference between simply renovating and completely rebuilding the layout is huge, especially in the case of townhouse renovations. If a skylight or floor opening is added to solve the lighting problem, the construction difficulty and cost will increase.
3. Building materials and equipment grades
For example, the price difference between domestic building materials and imported stone, system cabinets and custom furniture, and standard bathroom fixtures and high-end brand equipment can be several times or more, which is also an important variable affecting the total budget.
4. Degree of integration between design and construction
While subcontracting (with design and construction contracted out separately) may result in lower individual item prices, it can easily lead to additional costs due to communication discrepancies. In contrast, having a single team handle the overall planning usually allows for better control of the budget and risks upfront, making it easier to maintain the overall cost.
What subsidies are available for renovating old detached houses? Can I apply for them?
When renovating an old detached house, making good use of government subsidies can indeed reduce the burden, but it is necessary to clarify one concept first:Taiwan currently does not offer a single renovation subsidy.It is not a single policy, but rather a combination of multiple policies, such as the reconstruction of dilapidated and old buildings, seismic reinforcement, and the "..." promoted in recent years.Old houses extend life"plan.
In other words, the subsidy is not for home renovations, but rather for improvements in safety, structure, and living quality. Understanding this is crucial to determining your eligibility.
Common types of subsidies for renovating old detached houses
Currently, renovation subsidies in Taiwan can be mainly divided into three types, each with different applicable scenarios and subsidy amounts.
1. Seismic reinforcement subsidy
Primarily targeting older buildings with insufficient structural safety, this subsidy typically requires a seismic assessment to confirm the need for reinforcement before an application can be submitted. The subsidy amount varies depending on the scale of the project, and its purpose is to reduce the risk of damage from earthquakes; it is the most structure-oriented type of subsidy.
2. Reconstruction of dilapidated and old buildings and urban renewal
This type of project doesn't fall under the category of simple renovation, but rather leans towards demolition and reconstruction. Although the overall subsidies and floor area ratio bonuses are higher, the integration difficulty and time costs are also relatively high, and it is usually suitable for situations where an entire building or multiple households are jointly developed.
3. Subsidies for extending lifespan in old houses
This is an important policy promoted by the Ministry of the Interior in recent years, which emphasizes "improvement without demolition" and extends the service life of old houses through structural reinforcement, exterior wall renovation and interior function enhancement.
Under the current policy, the subsidy amount varies considerably, ranging from hundreds of thousands to millions, and even for some integrated cases, it can reach more than millions (depending on the type and scale of the building).
Conditions for applying for subsidies for renovating old detached houses
Most subsidies for renovating older detached houses require the building to be of a certain age, commonly 20 years or more, while some policies primarily target houses over 30 years old. In addition, the house must be a legal building and relevant documents such as title deed and building permits must be provided.
Meanwhile, most subsidies are limited to owner-occupied residences, and the owner must be a natural person; if it involves dilapidated old buildings or urban renewal, it may be necessary to meet the requirements of the proportion of residents' consent; however, the application for detached houses is relatively simple, and in most cases a single homeowner can submit an application.
Subsidy application process and precautions
Subsidies for renovating old detached houses usually require a process including building assessment, design planning, document review and construction. Before applying, you also need to confirm whether you are eligible for the subsidy.
In practice, many cases are rejected not because of ineligibility, but because of incomplete documentation, procedural errors, or applications not falling within the scope of the subsidy. For example, simple interior decoration is usually not eligible for subsidies, and some subsidies cannot be applied for repeatedly.
Therefore, it is recommended to collaborate with experienced design and construction teams at the early stages of renovation to assist in integrating subsidy applications and engineering planning, thereby reducing subsequent modifications and additional costs.
Not sure where to start renovating your old townhouse? Let the professional team at B-Studio do it all in one go!
If you're considering renovating an old house but are unsure whether to start with assessment, design, or construction, the most efficient way is to entrust the task to a professional team with integrated experience.
B-Studio Architectural Design TeamWith extensive experience in residential and commercial renovation and remodeling, we provide one-stop service, from preliminary structural assessment and regulatory integration to design planning and engineering execution, helping homeowners reduce communication costs and construction risks.
Whether it's renovating a 40- or 50-year-old detached house, or creating a modern exterior design and interior decoration for a luxury detached home, professional planning can help old houses regain their value. Welcome to inquire now!contact us.
