Vacancy periods: the silent killer of your rental yield

You found an apartment with a 7% gross yield. On paper, it looks like a great deal. But have you factored in the periods when the property sits empty? Between tenants, you need to account for notice periods, minor renovations, relisting, and the time it takes to find a new occupant. These weeks without rent add up and erode your actual profitability.

Rental vacancy is the time during which your property generates no income. Meanwhile, your fixed costs keep running: mortgage payments, property tax, building charges, and insurance. Every empty month is a month where you pay out of pocket instead of collecting rent.

Many beginner investors overlook this factor in their projections. They assume 12 full months of rent, when reality is often closer to 10 or 11 months. This gap can tip an investment from positive to negative.

The vacancy rate is straightforward: divide the number of days the property is unoccupied by 365, then multiply by 100. A property sitting empty for 1 month per year has a vacancy rate of 8.3%. Two months brings it to 16.7%.

To make realistic projections, research the local market. In major cities with high demand (Paris, Lyon, Bordeaux), average vacancy runs around 2 to 4 weeks between tenants. In mid-sized towns or rural areas, it can stretch to 2 or 3 months.

Don't forget the initial vacancy: between purchasing the property and welcoming the first tenant, 1 to 3 months often pass (renovations, furnishing, listing). This startup delay directly impacts your first year of returns.

Rent set too high compared to the market is the leading cause of extended vacancy. Tenants compare listings, and a property priced 10% above the neighborhood average stays online much longer. A slightly below-market rent with a tenant in place beats an ambitious price tag with months of emptiness.

The condition of the property also plays a major role. A worn-out apartment with outdated fixtures or poor layout rents more slowly. Tenants are sensitive to first impressions: fresh paint, a functional kitchen, and a clean bathroom make all the difference.

Location is the hardest factor to fix after purchase. A property far from public transport, shops, or employment hubs will structurally suffer higher vacancy. That's why local market analysis before investing is essential.

Let's take a concrete example. You buy a studio for EUR 120,000 with a monthly rent of EUR 600. Your gross yield is 6%. If you lose 1 month of rent per year, your annual income drops from EUR 7,200 to EUR 6,600. Your gross yield falls to 5.5%. With 2 months of vacancy, it drops to 5%.

The impact on net yield is even harsher. Fixed costs (mortgage, property tax, building charges) stay the same whether the property is rented or not. Each vacant month reduces your income without lowering your expenses. For a property with a tight cash flow, 2 months of vacancy can push you into the red.

Over 10 years, the cumulative effect is significant. With 1 month of vacancy per year, you lose the equivalent of 10 months of rent, or EUR 6,000 in our example. With 2 months per year, that's EUR 12,000 in lost income. Those amounts could have repaid part of your deposit.

The first lever is setting a rent consistent with the market. Check neighborhood listings, verify median rents on local observatories, and price slightly below to attract tenants quickly. A fair rent generates applications within the first few days.

Polish the presentation of your property and the quality of your listing. Professional photos, a detailed description, and a clean apartment during viewings dramatically cut vacancy time. Also plan renovations between tenants so you don't waste extra weeks.

Favor long-term leases and maintain a good relationship with your tenants. A tenant who stays 3 years instead of 1 means two turnovers avoided and potentially 2 months of vacancy saved. Keeping a tenant in place always costs less than finding a new one.

Before every investment, run multiple vacancy scenarios. Calculate your profitability with 0, 1, and 2 months of vacancy per year. If your cash flow turns negative with just 1 empty month, the project is too fragile. A sound investment must remain viable even with one month of annual vacancy.

Buy&Rent builds this parameter into its simulations. By adjusting the occupancy rate in the form, you instantly see the impact on your net yield and monthly cash flow under each tax regime. It's the best way to compare properties under realistic conditions.

Rental vacancy is a hidden cost that deserves as much attention as taxes or charges. A savvy investor anticipates it, quantifies it, and minimizes it. That's often what separates a self-financing investment from one that costs you every month.