Is it worth buying an investment apartment before renovating the plumbing? A threat to cash flow or an exceptional investment opportunity?

Pipe renovation, or line renovation, is one of the most emotive and controversial terms in Finnish real estate investment and the housing market. For many investors considering the purchase of an investment property, the term "pipe renovation" acts as an almost automatic warning sign, causing them to immediately turn their attention to other properties as soon as the term catches their eye in the list of upcoming renovations in a sales advertisement. For experienced real estate investors, however, the situation may be completely the opposite, as upcoming renovations are often the very factor that enables returns higher than the market average.
At best, upcoming pipe renovations in a housing company can be the very factor that enables above-average returns and rapid growth in wealth. When the renovation is properly understood and its costs are calculated as part of the overall investment, it can become the biggest competitive advantage in purchasing an investment apartment.
Why is the market afraid of pipe renovation?
In Finland, pipe renovations in apartment buildings are typically carried out every 30–50 years, when the service life of the building's technical systems reaches its end. The costs vary significantly, but typically range between €500 and €1,000 per square meter. For a 50-square-meter apartment, this often means an investment of €25,000–50,000.
For many traditional buyers, this is seen as nothing more than a risk and an additional expense. Among sellers, there are often owners who want to avoid the hassle and financial burden of major renovations, which significantly lowers the market price of the apartment, and they want to quickly pass on the future renovation costs to the next buyer. It is precisely this psychological barrier and price pressure that presents an opportunity for investors, as the value of the apartment often falls more than the future renovation will actually cost.
Investor's line restructuring algebra: Total cost relative to market value
When investing in real estate, it is not just the purchase price of the property that is decisive, but the total cost of the investment in relation to the actual market value of the apartment after renovation. Sometimes situations arise in the market where fear of future renovations clouds buyers' judgment.
The table below illustrates a situation in which an investor benefits from the price pressure caused by pipe renovation.
| Batch | Scenario 1: Moderate renovation | Scenario 2: Expensive renovation | Ready-made property on the market |
| Purchase price of the apartment | 40 000 € | 40 000 € | 80 000 € |
| Cost of pipe renovation | 25 000 € | 40 000 € | 0 € |
| Total cost | 65 000 € | 80 000 € | 80 000 € |
| Difference from market price | €15,000 in savings | Draw | – |
In light of this example, we can see that even if the pipe renovation costs €25,000, the investor will pay a total of €65,000 for the apartment and the renovation, while the price of similar ready-made apartments is €80,000. The investor therefore acquires immediate assets worth €15,000. Even in the most absurd case, where the cost of the renovation would rise to €40,000, the investor would still be on a par with the market, but would have a technically new and easily rentable apartment.
Excess return during the waiting period and the significance of cash flow
One of the most significant advantages of purchasing a pipe renovation project is the time between the purchase and the start of the renovation. Housing association projects often progress slowly from condition surveys to project planning and finally to implementation. The process can easily take three to five years.
During this waiting period, investors will enjoy significant excess returns. Since the purchase price of the apartment has been low, but the rent level is determined by the regional market, the relative rental yield of the investment is exceptionally high. In addition, before the renovation, the apartment does not have a large mortgage, so the maintenance fee remains low and the investor can collect cash flow for several years. In practice, part of the future renovation has already been covered by these accumulated rental returns before a single pipe has been replaced.
Tax benefits and the role of financial compensation
Pipe renovation also offers residential investors a significant tax advantage that buyers purchasing for their own use cannot take advantage of. When a housing company takes out a loan for renovation and the loan is recognized as income in the company's accounts, the financial contribution payable is fully tax-deductible rental income for the investor.
In practice, this means that the state contributes to the cost of the renovation in the form of reduced capital gains tax. If the property is chosen correctly, the financing costs will not cause the property to generate a negative cash flow; instead, the investment will continue to generate euros into the account every month, especially since the new bathroom will allow the rent to be increased.
When is it worth starting to shop?
Pipe renovation is not an exceptional crisis, but part of the normal life cycle of a property. Once the renovation is complete, the technical risk to the housing company is reduced for decades, making the apartment an attractive and secure investment for the long term.
The property is particularly attractive to investors when the price of the apartment is well below market value and the renovation cost estimate is realistic. It is also important to ensure that the housing company's other renovation history is in order, so that the pipe renovation is not just one of many consecutive large expenses. If the housing company is otherwise well managed, a renovation is an excellent opportunity to acquire a property that would otherwise be unavailable at a price suitable for investment calculations.
Ultimately, pipe renovation is just one variable in the investment equation. If the math shows that the total cost will remain below market value and the property will generate good cash flow even during the waiting period, there is no reason to fear renovation. On the contrary, it is often the path to greater wealth growth than the market.
Sources and further information:
- Statistics Finland: Renovation costs and trends in pipe renovations in Finland. https://stat.fi/tietotrendit/artikkelit/2024/Putkiremonttien-huippuvuodet-ovat-jaeaeneet-taakse
- Remonttiriski.fi: The cost and timing of pipe renovation from an investor's perspective. https://remonttiriski.fi/blogi/putkiremontti-hinta-2026
- Remonttihaku.fi: Report on typical price levels and square meter costs for pipe renovations. https://www.remonttihaku.fi/artikkeli/putkiremontti-hinta
- LVI-Pitkälä: Technical service life and pipe renovation implementation models in Finland. https://lvipitkala.fi/putkiremontin-hinta-2026
- Tax Administration: Information on the taxation of rental income and the deductibility of company loans. https://www.vero.fi/henkiloasiakkaat/omaisuus/vuokratulot/