Rightmove has defended its latest subscription hikes.

One agent told Eye that he has been told to expect a 13.5% increase in April.

The portal told us: “Rightmove can confirm that it is communicating details of new advertising rates to some of its members. Where new membership rates apply, full details are being communicated to each advertiser on an individual basis.

“Members are able to choose from a range of membership options to suit their online advertising needs, and most of those who have chosen to upgrade their membership package since 1st July 2014 will continue on their existing membership rates.

“Many agents have chosen to upgrade their membership package and invest more with us, as they recognise the effectiveness of Rightmove as a tool for winning and selling new instructions, especially at a time when quality stock is in short supply in many areas.”

Alex Cubitt, head of estate agency at Rightmove, added: “Our recent investments in new technologies have resulted in a string of new tools and innovations, and we’ve just recorded our busiest ever month in January, up 12% on last year, which saw a record 4.3million enquiries sent to our members and over 100 million visits to the site.

“We’ve created the industry’s fastest data feed to enable customers to upload properties in real-time, upgraded Rightmoveplus by developing two new areas, Rightmove Admin and Rightmove Intel, and launched an email lead mapping analysis to help customers target potential sellers and win more instructions in their area.

“We’re proud that these developments are available to all Rightmove customers as part of a standard membership, providing cost-effective and unrivalled reach to their target audience and supported by ever more innovative technology.

“All of this has taken place alongside our biggest ever ‘find your happy’ marketing campaign which continues in 2015, and there are more exciting developments to come.”

* Rightmove recorded its busiest month ever in January, when visits across all platforms including desktops and apps hit 100m for the first time in a month – an uplift of 12% on January last year.

Page views, which Rightmove says are the best indicator of activity on the site, surpassed 1.5bn for the first time ever, meaning home hunters are getting through over 1,000 pages every two seconds.

Email and phone enquiries to agents hit 4.3 million for the first time, equating to around 100 enquiries every minute.

Activity increased as the month progressed with the busiest days across all platforms Sunday 25th and Monday 26th.

Commercial director Miles Shipside said: “To satisfy this high level of demand, it is vitally important that more of the type of property that potential buyers are searching for comes to market.

“The whole industry needs to try and entice more owners to discuss the options and costs of trading up and down with their local estate agents, so we can make more efficient use of the UK’s inadequate housing stock.”