Typical customers could now save £145 on their valuations and will be able to access their valuation reports online regardless of which provider carries out the valuation.
Andy Gray, managing director of mortgages at Barclays, said: "I'm pleased to welcome Countrywide, alongside e.surv, to our valuation panel and introduce some new positive changes for mortgage customers.
“By providing better value, a simpler service and more choice we want to ensure that as a lender we are doing everything we can to make our customers lives easier, in their journey to get on or move up the property ladder."
Barclays has also removed level 2 and 3 survey reports to offer customers the opportunity to arrange their own survey if required, while they can still do this through Countrywide or any other survey provider.
Paul Chapman, managing director of Countrywide Surveying Services, said: “We are delighted Barclays has chosen to select Countrywide Surveying Services as one of two highly professional valuation panel managers to provide valuation services to its customers.
“Our business and service ethos is focused on maintaining our high quality standards and speed of service, unrivalled UK-wide coverage and industry expertise.
“This approach compliments the Barclays customer-led ethos and desire to make customers lives easier.”