A closing date gets set. Paperwork's moving. Then the lender's underwriter sends back one line: the insurance doesn't meet the rules. Now the deal is on hold.

This happens more than most buyers expect, and it's rarely about finding the cheapest coverage. It often comes down to a handful of mistakes that show up again and again on apartment and multifamily deals. Here are six of the most common ones, and how to avoid each.

1. Starting the Insurance Conversation Too Late

Most owners start shopping for coverage once they're deep into underwriting, sometimes just a couple of weeks before closing. That's fine if nothing comes up. It's not fine if the underwriter has questions, a gap needs fixing, or the carrier wants extra paperwork.

Loop in an agent as soon as the property is under contract, not after the loan is already approved. An early review catches problems while there's still time to fix them, instead of a deadline forcing a rushed decision.

2. Insuring the Building for What You Paid, Not What It Costs to Rebuild

Purchase price and rebuild cost are two different numbers, and mixing them up is one of the most common, and most expensive, mistakes on a multifamily policy.

If a fire or storm damages part of the building, the payout is based on what it costs to rebuild at today's construction prices, not what the property sold for. Base your property coverage on the wrong number, and you could end up covering the difference yourself.

3. Missing an Endorsement the Lender Requires

Buried in most lenders' rules is a list most buyers never read closely: additional insured status, a waiver of subrogation, a mortgage clause endorsement, sometimes more.

Skip one, and the underwriter sends the policy back for revisions right when the delay hurts most. Lender compliance exists to catch these before they become a problem.

4. Assuming Rent Will Keep Covering the Mortgage After a Claim

If a covered loss makes units unlivable, rent stops. The mortgage payment doesn't.

Loss of rents coverage is what bridges that gap. It's also one of the easiest pieces to overlook, since it doesn't feel urgent until the day you actually need it.

5. Carrying Over the Seller's Policy Without Checking It First

A property changing hands often means a new ownership structure, a new loan, and sometimes a new lender with different rules than the last one had.

The seller's old policy might have worked fine for them. That doesn't mean it meets what your lender needs now. A fresh review beats an assumption every time.

6. Choosing the Cheapest Quote Instead of the Right One

A lower premium looks great until the underwriter flags that it's missing something the lender requires, and suddenly there's a scramble to fix it under a deadline.

The cheapest policy and the right policy aren't always the same thing. On a multifamily deal, the gap between them tends to show up at the worst possible time: right before you're supposed to close.

Why These Mistakes Keep Happening

Most owners aren't insurance experts, and there's no reason they should have to be. Deals move fast, every lender has its own checklist, and insurance is often the last thing anyone thinks about until it's the one thing holding up the closing.

That's really the reason Moore Multifamily exists. One client came to the team facing exactly this kind of jam: an inspection issue and a tight deadline, with the lender's rules unclear. The team got the policy compliant fast enough to keep the deal moving. That's the pattern most owners run into, and it's fixable with the right eyes on the policy early, whether it's general liability or the fine print a lender cares about most.

Frequently Asked Questions

How early should I start the insurance process when buying an apartment building?

As soon as the property is under contract. Waiting until the loan is close to approved often leaves too little time to fix any gaps an underwriter finds.

Does refinancing require new insurance, or can I keep my current policy?

It depends on the new lender's rules. Even a solid existing policy sometimes needs updated endorsements or higher limits to match a new loan.

What's the most common reason a policy gets flagged at closing?

Missing a required endorsement, like additional insured status or a waiver of subrogation, is one of the most frequent holdups.

Can a cheap quote end up costing more in the long run?

Yes, if it's missing coverage the lender requires. Fixing gaps under a closing deadline often costs more, in time and stress, than getting it right from the start.

Do bigger buildings need different coverage than smaller ones?

The core coverage types stay the same, but limits, deductibles, and pricing often scale with the size and value of the property. A quote based on your own building is the only way to know for sure.

Get a Second Set of Eyes Before You Sign

Most of these mistakes aren't caught until an underwriter flags them, and by then, the clock is already running. A quick review before you're deep into a deal saves a lot of last-minute stress.

Moore Multifamily reviews policies for apartment owners and investors across Georgia and the Southeast. Request a quote before your next deal, and find out where you stand before your lender does.