San Mateo County, CA · San Mateo County

No notary required

Residential Smoke and Carbon Monoxide Alarms Affidavit

This affidavit certifies that a property owner or authorized agent has installed required smoke and carbon monoxide alarms for a permitted residential project.

At a glance

Issued by
City of San Mateo County · San Mateo County, San Mateo County, California
Notarization
Not required: file this form without a notary.
Official source
smcgov.org
Blank form
Download the PDF
Catalogued
Machine-readable
JSON record · about the forms index

What this form is

San Mateo County uses this affidavit to certify alarm installation for a residential building permit. The signer provides the permit number and property location, confirms that the required alarms are installed, and signs and dates the certification. The document says the County Building Inspector must receive it at final inspection, and that permits cannot receive final inspection approval without the certification.

Who needs it

A property owner or authorized agent whose residential permit requires smoke and carbon monoxide alarms must complete the installation certification.

How to submit it

The form says the County Building Inspector must receive the completed installation certification at final inspection. It lists the Building Inspections contact at 455 County Center, 2nd Floor, Mail Drop PLN 122, Redwood City, CA 94063, and [email protected].

About notarization

This document is signed without a notary; the signer signs and dates it under penalty of perjury, and it names no notarized attachment.

How to submit this form

  1. 1

    Download the Affidavit

    Download the Residential Smoke and Carbon Monoxide Alarms Affidavit for your residential permit.

  2. 2

    Complete the Form

    Enter the permit number and property location, confirm the alarms are installed, and provide the signer’s name, role, signature, and date.

  3. 3

    Prepare the Certification

    The form does not list required attachments; complete the installation certification itself.

  4. 4

    Provide It at Final Inspection

    The form says the County Building Inspector must receive the completed certification at final inspection.

Frequently asked questions

Do I need a notary for the Residential Smoke and Carbon Monoxide Alarms Affidavit?
No. The form has a signature and date line, and the signer affirms under penalty of perjury; it does not include a notary block or name a notarized attachment.
Who completes this alarms affidavit?
The property owner or an authorized agent for the property owner completes and signs the installation certification for the residential property.
How do I submit the Residential Smoke and Carbon Monoxide Alarms Affidavit?
The form says the County Building Inspector must receive the completed certification at final inspection. It lists the Building Inspections address and email.

Need something notarized?

This Residential Smoke and Carbon Monoxide Alarms Affidavit doesn’t need a notary, but if you have another San Mateo County form that does, a commissioned online notary can help.