CSV is lobbying the Government to fund an ambassador for a project it has set up to match families that have children on the child protection register with volunteers.
The volunteering charity has asked the Department for Children, Schools and Families to provide £80,000 to pay for a full-time employee who would encourage local councils to adopt the scheme.
CSV claims local councils are either unfamiliar with the Volunteers in Child Protection scheme, unsure of which part of their budgets to fund it from or deterred by the £60,000 annual cost.
Sue Gwaspari, director of part-time volunteering at CSV, said many councils were surprised to learn that volunteering projects cost money to run. She said a government-funded ambassador for the scheme would "knock on councils' doors" and advise them on how to find funds for charity projects.
"We need a post dedicated to promoting this model of involving volunteers in social work, and making sure councils understand how it works," she said.
Five councils run the scheme at present, but CSV hopes to extend it nationally.