The number of properties available per member branch rose from 39 in November, to 41 in December.
Year-on-year, both the number of prospective buyers and number of sales agreed per estate agency branch increased in December, according to NAEA Propertymark's latest housing survey.
The estate agency trade body also found that the supply of available housing and sales to first-time buyers (FTBs) had also increased across its membership.
Mark Hayward, chief executive, NAEA Propertymark, said: “After a period of suppressed market activity due to Brexit and political uncertainty, the clear outcome of the General Election in December has injected some much-needed confidence into the market.
“Despite it typically being a quieter time of year seasonally, our figures have shown positive trends with both demand and the number of sales being high in comparison to previous years, as both buyers and sellers no longer hold off on their plans. This is an encouraging close to the year and we hope to see more of this stability in 2020.”