Advertised rental yield, expected capital gains, temporary tax benefits: there are many factors to consider when investing in property for long-term wealth, but their reliability depends on variables investors do not always control. This article compares the main performance drivers of a property investment and assesses how well they hold up against the most common risks: higher energy costs, rental vacancies and changes to tax rules during the holding period.
Long-term wealth investment vs. rental yield: a comparison of strategies
Two strategies coexist in the market. Long-term wealth investment aims to increase the property’s value over an extended period (twenty to thirty years), with rental yields generally between 2 and 4%. Yield-focused investment seeks higher monthly cash flow, often above 5%, in less sought-after locations.
| Criterion | Long-term wealth strategy | Yield-focused strategy |
|---|---|---|
| Holding period | 20 to 30 years | 5 to 15 years |
| Gross rental yield | 2 to 4% | Above 5% |
| Typical location | City centre, established neighbourhoods | Outskirts, mid-sized cities |
| Risk of rental vacancy | Low (strong demand) | Varies depending on the local employment market |
| Sensitivity to energy-efficiency works | Moderate (buildings are often newer or renovated) | High (older properties are common) |
| Resale liquidity | Good, even in a downturn | Highly dependent on the local market |
Gross yield alone tells you very little. A property yielding 3% in a high-demand neighbourhood retains its relative value, while one yielding 7% in an area with a declining population may become difficult to resell. For more information on how each approach works, the guides on property investment on Guide Patrimoine explain the selection criteria for different investor profiles.
Energy ratings and regulatory deadlines: the hidden cost of a poor rating
Since 1 January 2025, homes in mainland France with a G rating can no longer be offered under a new lease, have their lease renewed or have it tacitly extended. F-rated properties will be affected from 2028, and E-rated properties from 2034. Rents for F- and G-rated homes are also frozen.
This timeline makes the energy performance certificate a key factor in a property’s liquidity. Anyone buying an F-rated apartment today must include renovation costs in their profitability calculations, or risk being unable to rent it out in less than two years.
Renovation costs and their impact on net returns
The cost of energy-efficiency renovations varies considerably depending on the type of property, existing insulation and heating system. Investors buying an F-rated property and counting on upgrading it to a D rating should get quotes before signing, not afterwards.
- Insulating the roof space or walls is often the biggest expense, but can also improve the property’s energy rating the most.
- Replacing an old oil- or gas-fired boiler with a heat pump affects both the energy rating and the tenant’s projected utility bills.
- The method used to calculate energy ratings has changed for homes heated by electricity, which may improve their rating without any work: affected older certificates can be updated with a certificate.
Checking the current energy rating and estimating the cost of reaching the required rating before making any commitment is the only reliable way to avoid extra costs that could wipe out several years’ worth of rent.
Stress test: rental vacancies, changing tax rules and unexpected repairs
Profitability projections are generally based on three optimistic assumptions: continuous occupancy, stable tax rules and no unexpected repairs. To test an investment’s resilience, these assumptions should be challenged simultaneously.
Extended rental vacancy
A housing shortage in high-demand areas does not automatically protect against vacancies. A property may remain empty for several months if its rent is above the local market rate, its interior is deteriorating or its energy rating is no longer compliant. Each vacant month reduces the annual net yield by around one-twelfth.
Tax scheme changes during the holding period
The Pinel scheme has been discontinued. The new scheme known as Jeanbrun (or “Relance logement”) works differently: it is based on depreciating the purchase price rather than providing a direct tax reduction. This mechanism is closer to the furnished rental tax regime than to the former Pinel scheme.
An investment built around a specific tax benefit becomes vulnerable if that scheme is changed or scrapped. The average holding period for a long-term property investment (twenty years or more) far exceeds the political lifespan of a tax scheme, which rarely lasts more than ten years.
Pre-investment stress-test checklist
Before signing, applying a downside scenario helps assess the project’s true margin of safety:
- Recalculate net returns assuming two months of vacancy per year instead of none.
- Add the cost of improving the energy rating to the projected budget (using actual quotes, not average estimates).
- Model returns without any tax benefits, as if the current scheme were to disappear the following year.
- Check that cash flow remains positive, or that any monthly shortfall remains manageable throughout the planned holding period.
An investment that remains viable under this downside scenario demonstrates genuine resilience as a long-term asset. One that depends on 100% occupancy and an unchanged tax scheme to avoid losing money is a gamble, not a long-term property investment.
Jeanbrun scheme and furnished rentals: how to assess the tax implications in 2026
The Jeanbrun scheme allows investors to depreciate the purchase price of a home, reducing taxable income without relying on a conventional tax reduction. This brings it closer to the LMNP (non-professional furnished rental) tax regime, where property depreciation is the main tax benefit.
For investors choosing between the two, the comparison comes down to the type of lease (unfurnished or furnished), the associated rental management and the tax treatment on resale. Furnished rentals offer greater flexibility in lease terms, but involve furnishing requirements and more frequent tenant turnover.
The choice between these two frameworks should not be based on the advertised gross yield. It should be based on net income after tax and actual expenses, while also factoring in the downside scenario outlined above. A spreadsheet that accounts for vacancies, repairs and changing tax rules is worth more than a sales brochure.
