Property website OnTheMarket today reports that the number of estate and letting agent offices listing on the website has grown every month since the start of August last year.

Last month marked the portal’s 12th consecutive month of growth.

OTM, which is now just over 18 months old, had more than 6,400 listing offices at the end of July – an increase of almost 1,000 offices year on year, equating to 17% growth.

Several multi-branch agents have chosen to list with OTM since the beginning of the year, boosting office numbers.

These have included Nottingham Estate Agency and Harrison Murray which have a total of 37 branches; eight-branch firm Arnolds Keys which has offices in Norwich, Norfolk and north Suffolk; Watsons, estate agents and chartered surveyors covering East Anglia; Jeffries, a seven-branch firm in south-east Hampshire; Goadsby, a 25-branch firm with offices across Dorset, Hampshire and Wiltshire; and Meller Braggins, a five-branch firm in Cheshire.

Ian Springett, OTM chief executive, said: “OTM has grown considerably over the last year, by almost 1,000 offices. And between January and June, the number of listing offices grew by 10%.

“As irritating as this is to our detractors, we enter the autumn stronger than ever, determined to work towards creating the best portal for consumers and agents alike.

“Many agents advertising are launching their new-to-market properties exclusively at OTM first, 24 hours or more ahead of any other portal, which is a strong and compelling reason for consumers to visit the website.

“We announced in May that OTM had the support of 7,000 estate and letting agent offices.

“This figure – which continues to grow – includes offices which are contracted and those which are covered by Letters of Intent to join Agents’ Mutual and to list at OTM when overall support exceeds 7,500 offices – our next milestone.”