Smoke / CO Detector Replacement Cost in Boston, MA

What homeowners in Boston typically pay to replace a smoke / co detector in 2026.

Typical range

$65–$125

Most homeowners pay around $95 installed.

EstimatedUpdated 6/16/2026

How we calculated this

Higher labor costs and strict local fire code requirements drive the installation cost above the national average.

Nearby cities

Other safety replacement costs in Boston

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