Maintenance Assistant salary at San Mateo

The average maintenance assistant salary at San Mateo was $19,321 , which is 61 percent lower than the average salary for this job in California, and 56 percent lower than the national average for this job . Maintenance Assistant salaries at San Mateo typically range from $14,682 to $18,696 (25th to 75th percentile). The highest reported maintenance assistant salary was $30,415. There are 8 employees at San Mateo with the job title maintenance assistant.