Seine-Saint-Denis department Property Prices, Rents & Rental Yields

About Seine-Saint-Denis department

Seine-Saint-Denis sits just northeast of Paris, linking the capital’s edge with places such as Saint-Denis, Montreuil and the canal-side districts. Its historic centres, waterways and dense urban neighbourhoods give apartment investors a geographically varied setting within one department.

In October 2026, the clearest signal for apartments is the split between rents and sale prices: average rent rose 4.2% from the previous month while the average sale price fell 0.7%. Those opposing moves can make the near-term income picture look more supportive, but they do not show that every part of the department is moving in step. Department-wide averages describe an overall reading, not the outcome for a particular building or street.

The average apartment sale price stands at €269,900, a useful reference for purchase budgets without defining the cost of an individual property. The reported yield is 5.65%, a headline measure that puts the relationship between rent and price in context. Read together, these figures suggest comparing expected rental income with the acquisition price rather than treating either monthly change as a standalone verdict on returns.

The contrast matters when reviewing an apartment investment: a rising rental average and a falling sale average point in different directions for the same month, yet neither guarantees a lasting shift. Use this October snapshot as a starting point, then test its relevance against the property and assumptions under consideration.