Figures from the Notaires de Paris - Ile-de-France show there were 27,400 sales of older properties, not new build property, a drop on the 2011 figure which was 36,100.
As for sale prices, these stayed pretty stable with an increase of just 0.1%.
The number of sales in the Val d'Oise département, found to the north of Paris, fell by 33% when compared to March to May 2011, with those lest affected, the Hauts-de-Seine and the Essonne, still seeing a 17% drop compared to last year.
Notaires de Paris - Ile-de-France say that the fall in sales has continued into June, with a predicted sharp fall for the second quarter of 2012.
I suppose it is worrying news if you are looking to live in Paris as although the number of sales has fallen, the figures showing that prices have remained stable, means people are having to choose from a smaller bucket of properties.
Reading of the experiences of Anne Stark Ditmeyer, an American freelance graphic designer, and her search for an apartment in Paris, you can see that while demand remains strong for those looking to rent as well as buy, the French capital remains a seller's market.
The full press release, with figures and tables: