Chimney repairs in West Covina generally cost around $114 up to $807 depending on the damage to be repaired. A crack on your chimney can cost you $175. However, complete repair or rebuild starting from the crown down to the roofline of your house is estimated to be $1000 up to $3000. Hiring a professional to reseal cracks and replace flashings along the roofline to prevent water leaks that can damage existing mortar, ceiling, and floor can cost around $300 to $400. Damages to the crown, on the other hand, can cost $150 to $300 to repair.