Rightmove appears to have started notifying agents of price increases.

One two-branch agent has been told that from September 1, its monthly cost for one branch will increase from around £1,000 by over £200 – a 21% increase.

The rate for the second branch will go up from about £1,500 per month by around £100.

The agent said that they had cut the amount for one branch they had been paying last year to the basic package because of the “silly” increase Rightmove was trying to levy then.

In January, when the agent tried to cut the other branch to the same basic package, it was no longer available.

The latest notification letter this week says that despite housing market pressures, legislative changes and developments in agency practices, “some things remain unchanged”.

The letter goes on: “Demand for the right property at the right price continues to be robust and the underlying housing market fundamentals remain sound. That means that more than ever there is a need for quality leads and instruction opportunities.

“Looking at the time home movers spend on the main property portals, 74% is spent on Rightmove.”

The agent said: “I have sent them a strongly worded complaint, which will probably go nowhere except the delete basket.

“This is clearly the start of their increases this year. It’s such a shame that they can’t work with agents instead of pushing us away, and us ending up hating dealing with them.”