Skip to main content
CityRuleLookup

Haverhill, MA Building Safety: Carbon Monoxide Detectors (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

CO detector inspection fee
$25 per unit
Single-family combo inspection
$50
Two-family combo inspection
$100
Building of 6 units or fewer
$150
Building over 6 units
$500
Reinspection, 3 units or fewer
$15

Summary

In the City of Haverhill, properties are certified for combination smoke and carbon monoxide detector compliance through Fire Department inspections billed under City Code §§ 128-7 and 128-7.1. A single-family home inspection costs $50, two-family $100, buildings with six or fewer units $150, and larger buildings $500, while the separate carbon monoxide detector inspection is billed at $25 per unit.

§ 128-7. Smoke detector inspection (for combination smoke/carbon monoxide inspection) (per MGL c. 148, Fire Prevention, § 10A). ... A. Single-family dwelling or a single-dwelling unit: $50. B. Two-family dwelling: $100. C. Any building/structure with six or fewer residential/commercial units: $150. D. Any building or structure with more than six units: $500. § 128-7.1. Carbon monoxide detector inspection. ... The fee for a carbon monoxide detector inspection shall be, per unit: $25.

Full Breakdown

Massachusetts law (MGL c. 148, § 10A) requires a certificate of compliance confirming working smoke and carbon monoxide detectors before most residential real estate can be sold or its occupancy changed, and Haverhill's Fire Department carries out those inspections locally. City Code § 128-7, titled 'Smoke detector inspection (for combination smoke/carbon monoxide inspection),' sets the inspection fee on a sliding scale tied to building size: $50 for a single-family dwelling or single unit, $100 for a two-family dwelling, $150 for any building or structure with six or fewer residential or commercial units, and $500 for anything larger than six units.

Section 128-7.1, added by City Council Doc. 73 on June 10, 2008, adds a further per-unit charge specifically for carbon monoxide detector inspection: $25 per unit, on top of the combination smoke-detector inspection fee in § 128-7. If the inspection finds a detector missing, disconnected, or otherwise noncompliant, the Fire Department will not issue the compliance certificate needed to close a sale or change occupancy until the deficiency is corrected and a reinspection fee under § 128-8 is paid: $15 for three units or fewer, $30 for four to six units, or $50 for seven or more units.

Property owners schedule inspections directly through the Fire Department's fire prevention office, and the fee schedule in Chapter 128 has not changed since it was set in 2008.

Violations & Fines

Selling or transferring occupancy of a dwelling in Haverhill without a valid smoke and carbon monoxide detector compliance certificate can hold up the closing, since the Fire Department will not certify the property until inspectors confirm working detectors. Owners who fail an inspection must correct the deficiency and pay a reinspection fee under § 128-8: $15 for up to three units, $30 for four to six, or $50 for seven or more.

Frequently Asked Questions

How much does a carbon monoxide detector inspection cost in Haverhill?
City Code § 128-7.1 sets the fee at $25 per unit for a carbon monoxide detector inspection, in addition to the combined smoke-detector inspection fee under § 128-7, which ranges from $50 for a single-family home to $500 for a building of more than six units.
Who inspects for carbon monoxide detector compliance?
The Haverhill Fire Department carries out the inspection required under MGL c. 148, § 10A and City Code § 128-7 before a residential property changes hands or occupancy, checking that combination smoke and carbon monoxide detectors are installed and working before issuing a compliance certificate.
What if my property fails the carbon monoxide detector inspection?
You must fix the deficiency and schedule a reinspection, which carries its own fee under § 128-8: $15 for three units or fewer, $30 for four to six units, or $50 for seven or more units, before the Fire Department will issue the compliance certificate.

Sources & Official References

Other rules in Haverhill

All Haverhill rules

Compare Haverhill to another location·View the Massachusetts building safety overview

Get notified when Carbon Monoxide Detectors in Haverhill, MA changes

We'll email you the moment we detect a change in the code. No spam, unsubscribe anytime.

We'll never sell or share your email. One-click unsubscribe in every email.

See something wrong?

Help us keep this page accurate. If you notice an error or outdated information, let us know.