What is the Cost Range for Large-Scale Renovations? A Thorough Explanation of Breakdown and Tips to Reduce Costs!

For owners managing condominiums, apartments, and factories,
the cost of large-scale repairs is one of the most concerning points.

In fact, while they understand the necessity of the work,
the cost often becomes a bottleneck, leading to postponement of the project.

However, proceeding with large-scale repairs without proper knowledge can
result in unexpected cost burdens and
increase the risk of future repairs.

If you want to understand the costs correctly and implement large-scale repairs without strain,
please use this as a reference.

What are large-scale repairs?

As time passes, buildings gradually deteriorate, including the exterior walls, waterproofing layers, and facilities.

If such aging deterioration is left unattended, it not only compromises safety and comfort but also directly leads to a decrease in asset value.

This is where “large-scale repairs” become important.

Here, we will explain in detail what kind of work large-scale repairs refer to and why the costs tend to be high.

Overview of the work

Large-scale repairs refer to…
planned renovation work carried out on buildings such as condominiums, apartments, and factories.

Main tasks include exterior wall repairs and painting, waterproofing work on roofs and balconies, repairs of common areas, and updates of facilities.

Generally, they are carried out approximately every 12 to 15 years, serving not only to repair visible defects but also to play a preventive maintenance role to avoid future troubles.

Large-scale repairs are essential work that extends the lifespan of buildings and helps reduce long-term maintenance costs, so it is important to carry them out at the right timing.

Reasons for high costs

The reason why the costs of large-scale repairs tend to be high is due to the extensive range of work and the number of processes involved.

Since multiple specialized works, such as scaffolding installation and temporary construction, as well as exterior wall painting and waterproofing work, are carried out simultaneously, labor and material costs tend to accumulate, resulting in high overall costs.

Additionally, if deterioration is progressing, unexpected repairs may be necessary, leading to additional costs.

If the preliminary investigation is insufficient, the scope of work may increase during the project, which can also inflate the total cost, so caution is advised.

Cost estimates for large-scale repairs

The cost of large-scale repairs varies significantly depending on the type, size, and structure of the building.

Even with the same total floor area, the necessary construction work changes based on the usage and equipment, making it impossible to definitively state a single price.

Here, we will introduce the “cost estimates” for large-scale repairs in condominiums, apartments, and factories.

In the case of condominiums

The cost of large-scale repairs for condominiums is estimated to be around 800,000 to 1,500,000 yen per unit.

Since the scope of repairs for exterior walls, rooftop waterproofing, shared corridors, and balconies is extensive, and the area for scaffolding is large, it is not uncommon for the total cost to exceed tens of millions to over 100 million yen.

While the burden per unit is easier to distribute due to the larger number of units, it is important to note that costs can easily increase if equipment updates or compliance with regulations overlap.

In the case of apartments

The cost of large-scale repairs for apartments is generally around 3,000,000 to 10,000,000 yen per building.

Although the total cost is easier to control due to the smaller scale compared to condominiums, many cases do not have repair reserve funds set up, leading to heavier temporary financial burdens.

Repairs often focus on exterior wall painting and roof waterproofing, and there tends to be a significant cost difference based on the age of the building and its deterioration, so thorough investigation in advance is necessary.

In the case of factories

The cost of large-scale repairs for factories ranges from several million to several hundred million yen, depending on the size and use of the building.

Due to the large area of roofs and exterior walls, and the frequent need for high-altitude work or special scaffolding, construction costs tend to be relatively high.

Additionally, if construction is to be carried out without stopping operations, project management and safety measures will be necessary, which can lead to increased costs, so careful preliminary investigation and planning are essential.

Breakdown of large-scale repair costs

The costs of large-scale repairs consist of multiple construction items.

While the total amount may seem high at first glance, understanding the breakdown makes it easier to see where and how much costs are incurred.

Let’s take a closer look at some representative construction items and how their costs are considered.

Scaffolding and temporary construction

Scaffolding and temporary construction are essential foundational works in large-scale repairs, accounting for 20-30% of the total cost.

This is one of the items where cost-cutting is difficult, as it directly relates to ensuring worker safety and maintaining quality.

Moreover, the cost is influenced by the height and shape of the building, as well as site conditions, with costs tending to rise in narrow sites or high-rise buildings.

Therefore, when obtaining estimates, be sure to check the specifications and installation period of the scaffolding.

Exterior wall repairs and painting

Exterior wall repairs and painting not only maintain the aesthetic appeal of the building but also play a crucial role in preserving waterproofing and durability.

It includes crack repairs, repairs of missing parts, and beautification processes, and the more deterioration progresses, the higher the costs will increase.

Price differences can also arise depending on the type of paint used, and high-performance paints with longer lifespans tend to have higher initial costs, so it is important to communicate your paint preferences during the estimation stage.

Waterproofing Work

Waterproofing work is a critical task that prevents rainwater from entering rooftops, balconies, and shared corridors.

If the deterioration of the waterproof layer is left unaddressed, it could lead to leaks and corrosion of the structural components, so regular repairs are necessary.

Methods include urethane waterproofing and sheet waterproofing, and the appropriate method varies depending on the location of the work and the condition of the existing waterproof layer.

Consequently, costs will also vary, but since waterproofing work is crucial for the overall lifespan of the building, it should not be judged solely based on price.

Equipment Work

Equipment work includes repairs and maintenance of water supply and drainage pipes, electrical equipment, lighting, and security systems.

In older buildings, the aging of equipment may progress more than the exterior, and in such cases, costs can become quite high.

Additionally, indirect costs such as design fees, investigation fees, management fees, and application management fees should not be overlooked.

As such, various costs arise in large-scale repairs, making it essential to calculate everything thoroughly, including the finer details.

Factors Affecting the Cost of Large-Scale Repairs

The costs of large-scale repairs do not remain the same for every building.

This is because multiple factors, such as the age of the building, the degree of deterioration, the building’s purpose and location, and compliance with regulations, are intricately related.

Therefore, if you only look at the market price, you may often feel that it is “higher than expected” or that there is “a difference in content“.

To avoid such situations, it is important to understand the factors that cause cost fluctuations.

Here, we will introduce several points that particularly have a significant impact on large-scale repairs.

Building Age and Deterioration Status

The most significant factors affecting large-scale repair costs are the age of the building and the degree of deterioration.

If the building is relatively new, it may only require partial repairs to the exterior walls or waterproofing layers, but as time passes, the underlying structures and components are more likely to deteriorate.

If you neglect the expansion of cracks, corrosion of metal parts, or breaks in the waterproof layer, the scope of repairs will widen, and construction costs tend to increase.

Conducting regular inspections and addressing deterioration while it is still minor is the quickest way to ultimately reduce costs.

Building Use

The different repair requirements based on the building’s use are one of the factors that lead to cost differences.

In condominiums and apartments, the safety and comfort of residents are prioritized, so aesthetics, soundproofing, and waterproofing performance are emphasized.

On the other hand, in factories, durability and functionality take precedence, leading to an increase in floor repairs and work related to large equipment.

Thus, the necessary construction content and finishing standards vary by use, which can easily lead to cost differences even for buildings of the same size.

Location, Regulations, and Timing

The location of the building and the surrounding environment also affect repair costs.

In urban areas or densely populated residential areas, there are often restrictions on scaffold installation and material delivery, making temporary construction costs higher.

Additionally, landscape regulations and noise restrictions may limit construction methods, which can sometimes increase costs or extend construction periods.

Furthermore, conducting work during busy periods can lead to increased labor costs, so caution is necessary as overall costs tend to rise.

Compliance with Laws and Regulations

In large-scale repairs, compliance with current building codes and fire safety laws may be required.

Especially for older buildings, which are often constructed under past standards, it is not uncommon for corrective work to be necessary during repairs.

Typical construction tasks include changing the height of handrails, adding fire protection equipment, and ensuring evacuation routes.

These compliance-related works are areas where additional costs are likely to arise, so it is important to consult with a specialist in advance and clarify the necessary scope.

Points to Reduce Large-Scale Repair Costs.

Large-scale repairs can easily become expensive, but depending on how you proceed, it is possible to manage costs without strain.

The key is to thoroughly prepare and gather information in advance.

In particular, the way you obtain estimates, plan repairs, and whether or not experts are involved can significantly affect the final costs.

Here, we will introduce cost-saving points that are easy for owners and managers to implement while still being highly effective.

✔️Obtain Multiple Estimates

When conducting large-scale repairs, be sure to obtain estimates from multiple companies.

With only one estimate, it is difficult to determine whether the quoted amount is appropriate, and you may not notice unnecessary work or excessive specifications.

By comparing estimates from multiple companies, the differences in construction items and unit prices become clear, making it easier to objectively assess the reasonableness of the costs.

Additionally, by comparing not only prices but also the content of proposals and the clarity of explanations, it becomes easier to find a reliable contractor, so please keep this in mind.

✔️Establish a long-term repair plan and proceed with systematic savings

To keep the costs of large-scale repairs down, it is essential to establish a long-term repair plan and secure repair reserve funds systematically.

In cases of unexpected repairs, it is often difficult to thoroughly examine the details of the work, resulting in higher costs.

On the other hand, having a forward-looking plan allows you to carry out necessary work at the appropriate time, making it easier to suppress the progression of deterioration.

By continuing to save without overburdening yourself, you can reduce temporary financial strain, so let’s steadily prepare.

✔️Utilize design supervision and third-party evaluations

Incorporating design supervision and third-party evaluations is also an effective means of cost control.

Having experts check the details of the work and estimates makes it easier to prevent excessive specifications and unnecessary work.

Moreover, during construction, they can manage quality and progress, reducing the risk of needing rework.

Although there are initial costs, it ultimately helps reduce unnecessary expenses and makes it easier to achieve high-quality large-scale repairs at fair prices, so please consider utilizing this.

For large-scale repairs of condominiums, apartments, and factories, leave it to “Kakeru Koumuten”!

Large-scale repairs vary significantly in required work depending on the size and purpose of the building.

Furthermore, since each requires experience and responsiveness, it is important to hire a reliable contractor.

Kakeru Koumuten has a proven track record of handling a wide range of large-scale repairs, not only for condominiums and apartments but also for factories and commercial buildings.

We carefully check the deterioration status from on-site surveys and propose appropriate construction plans that consider the characteristics and budget of each building, so we encourage those looking for a trustworthy contractor to consult with us.

On-site surveys, deterioration diagnoses, and estimates are free!

Additionally, we strive to provide clear explanations regarding the work and estimates, ensuring that even first-time owners or management companies can consult with confidence.

If you want to protect the value of your building from a long-term perspective or are looking for a reliable contractor, please consult with Kakeru Koumuten!

Summary

The costs of large-scale repairs can easily become high, and if the timing or content of the work is misjudged, there is a possibility of incurring unexpected burdens.

To keep costs down, it is important to correctly understand market prices, breakdowns, and factors that cause fluctuations, and to be mindful of obtaining multiple estimates, establishing long-term repair plans, and utilizing experts.

Moreover, for buildings such as condominiums, apartments, and factories, repairs that take into account the characteristics of their use are crucial.

To maintain the asset value of the building and prevent future troubles, early information gathering and the selection of a reliable contractor are essential.

That said, there are many contractors nationwide that handle large-scale repairs, so many people may be unsure of where to consult.

In such cases, feel free to consult with “Kakeru Koumuten”!

We welcome consultations via LINE◎

For roofing, guttering, and exterior work and repairs in Kanagawa, contact Kakerukoumuten Co., Ltd..

AAA is a young company with an average age in the early 20s, but our technology is second to none.

One of our greatest strengths is that we can do all of our own scaffolding, roofing, and painting work. In this industry, where work is generally divided, we are able to provide a complete set of services, which saves time and effort in management and reduces costs. Above all, if there is any trouble, we will come to you right away!

We can confidently declare this. We are the youngest and most friendly renovator in Kanagawa!