However, the number of new building permits was up 6.4% compared with September 2012, the data showed.
Residential constructions in rural areas made up for 62.9% of the new housing permits issued in September.
New permits for non-residential buildings, including administrative structures, stood at 692 units, compared with 627 units in August.
In January to September, Romanian housing permits reached 20,090 units, down 1.7% on the year.