When you change carriers, your mortgage company needs proof of insurance — a certificate showing them listed, and confirmation that your house is insured for replacement cost.

A certificate of insurance is a short, one-page document that summarizes a homeowners policy and identifies who has an interest in the property — in this case, the mortgage company. It is the primary document the lender needs when you switch carriers. The longer version of the same information lives on the declarations page, and most lenders accept either. Both documents identify the property, the carrier, the coverage amounts, and the mortgagee. Understanding which documents the lender actually requires (and which they don’t) makes the switching process much faster.

The Core Document the Lender Needs

The mortgage company needs proof that the home is insured to replacement cost and that the lender is listed as a lienholder on the new policy. That proof typically arrives in two forms: an agency-issued certificate of insurance and the carrier’s official declarations page. The certificate is shorter and faster — we can issue it the same day a policy is bound. The dec page is the authoritative document, and the carrier transmits it to the lender’s insurance tracking service automatically. Most lenders use a third-party service like Proctor Insurance or ServiceLink to manage these documents on their behalf, so the address on the certificate is sometimes a tracking service rather than the lender’s main office. We pull the correct address from the existing dec page or directly from the lender’s servicing portal.

Information That Has to Appear on the Documents

For the lender to accept the certificate or dec page, several specific pieces of information must be present and accurate:

1. The full legal name of the mortgage company (e.g., “ABC Bank, ISAOA/ATIMA”).
2. The loan number.
3. The property address, matching the address on the mortgage.
4. The dwelling coverage amount, at or above replacement cost.
5. The policy effective date and expiration date.
6. The carrier name and policy number.
7. The named insured matching the borrower(s) on the loan.

If any of these details are wrong, the lender’s tracking system will flag the document and you may receive a notice claiming proof of insurance hasn’t been received. That’s why we review the dec page line-by-line before sending it. If you want to understand what to look for yourself, our piece on whether the new policy actually matches your current coverage walks through the comparison.

The number one cause of “missing proof of insurance” letters from lenders isn’t a missing document — it’s a document where the loan number was entered incorrectly. Always verify it.

What the Lender Doesn’t Need

You don’t need to send the lender a copy of every endorsement or every page of the policy. The certificate or dec page is sufficient. You also don’t need to send them the binding letter, the application, or your personal underwriting reports. Some homeowners overthink the documentation requirement and end up emailing pages of paperwork to the servicer — which actually slows things down because the tracking service has to manually review the extra material. Send the dec page or certificate, nothing more. For more on what to do during the switch itself, see our explainer on the easiest way to switch without missing anything.

Coordinating With the Old Carrier

The lender also benefits from a clean cancellation notice from the old carrier. When we process the cancellation, the old company sends the lender a notice confirming that the prior policy has been terminated. That closes out their record of the old policy and prevents the tracking service from showing two active policies. The cancellation notice is automatic — you don’t need to send it manually. If you’re concerned about timing, our piece on who cancels the old insurance policy covers the mechanics.

What to Keep for Your Own Records

Save the new declarations page, the certificate of insurance, and any email confirmation from the agency. If you call the mortgage servicer directly to confirm the update, write down the date, time, and representative name. These records become useful if there’s ever a billing discrepancy or an escrow misallocation later. For a broader look at avoiding billing issues, our explainer on avoiding duplicate billing when switching home insurance covers the most common pitfalls. If you’d like to begin a side-by-side review of your current home policy with what’s available in the market, the homeowners insurance page is the place to start, or you can request a personal insurance quote for a direct comparison.