“Everybody Agreed” Is Not an Extension: Unsigned Addenda and Florida Closing Deadlines

The buyer needs five more days to close. The listing agent says the seller “should be fine with it,” and an addendum goes out. The lender reschedules. The title company moves the file. The buyer books the movers for the new date.

The seller never signs it.

Which date controls? Almost always the last fully executed agreement — not the amendment everyone assumed would get signed eventually.

A Proposed Amendment Is Still Only a Proposal

A signed contract creates enforceable duties and enforceable deadlines. Changing the closing date, or any other material term, requires a precise written amendment signed by every party who needs to be bound.

A buyer’s signature on an extension does not make that extension effective against the seller. It is an offer to amend. If the seller signs but adds a condition, that is usually a counterproposal, not an acceptance. And silence is not consent — not scheduling emails, not “the seller never objected,” not a rescheduled walk-through.

A 2026 Florida appellate decision arising out of a Broward County sale shows how expensive that assumption gets. The contract made time of the essence — meaning every deadline was strict and missing one was a breach — and required modifications to be in writing and signed. The buyer signed a proposed extension. The sellers did not. The court held that the original closing date controlled, and the buyer — who was not ready on that date — was the party in breach.

Florida does recognize oral modification of a written contract in limited circumstances, but the proof requirements are demanding and the analysis belongs in litigation. It is not a transaction-management strategy.

“In Writing” Means What Your Specific Form Says It Means

Read the contract that was actually signed, not the one you remember.

Under the current Florida Realtors/Florida Bar residential contract, notices may be delivered only by mail, facsimile, personal delivery or email. Text messaging is not on that list. Notice to or from a party’s attorney or broker is ordinarily effective, subject to specific exceptions that require delivery directly to the party.

The NABOR contract (the Naples Area Board of Realtors form used in many Naples-area sales) identifies U.S. mail, personal delivery, email and facsimile, and states expressly that SMS text messages do not constitute proper notice.

Agents working from a different form — or a different revision of the same form — should not assume the rules carry over. This is a clause worth actually reading once per contract.

Notice and Amendment Are Not the Same Thing

This distinction causes more confusion than any other in this area.

A notice is something one party delivers to the other: a termination during an inspection period, a demand, an election. Under some provisions, a single party’s properly delivered notice is legally sufficient on its own.

An amendment changes the bargain, and a bargain takes two. The Florida Realtors/Florida Bar form requires a written modification executed by the parties intended to be bound. Emailing an unsigned addendum is the start of that process, not the completion of it.

Electronic Signatures Are Fine. Emojis Are Not.

Florida recognizes electronic signatures when the legal requirements are met, including intent to sign. That is a real and useful rule, and nobody needs to print anything.

But it does not convert every typed name, “looks good” reply or thumbs-up reaction into an executed amendment. Use the approved form, collect every required signature, and communicate the status accurately: “Extension requested, not yet executed.”

And keep the original deadline on the calendar until the signed amendment is in hand. That single habit prevents most of these disputes.

“On or Before” Is Not a Substitute for an Amendment

Say the contract calls for closing “on or before June 30.” The buyer now wants to close June 20 because the rate lock expires. The seller cannot move out until June 30. Or the reverse: the seller wants June 20 and the buyer planned around the stated date.

The phrase does two things. It permits flexibility, and it sets an outside date. Standing alone, it does not identify who may compel an earlier closing, how much notice that party must give, or which of the other contractual periods move with it.

If both parties are meant to be bound to an earlier date, sign an amendment. If one party is meant to have a unilateral early-closing option, the contract should say who holds it and how and when notice must be delivered to exercise it. “On or before” answers none of that.

Moving One Date Does Not Move the Others

Extending the closing date does not automatically extend the loan approval period, the inspection period, the title review period, the association approval period, or any other deadline in the contract.

Some forms contain automatic extension provisions, but they are narrow and specific — and a lender asking for more time does not automatically trigger them. Read the provision, confirm whether its conditions are actually satisfied, and if there is doubt, paper it.

And if the original date has already passed before anyone notices, the problem is no longer a scheduling one. There may be an existing default in the record. At that point, counsel may need to put in writing that both sides waive the missed deadline, reinstate the contract, and confirm it remains in force — because proceeding as though nothing happened leaves both parties with an argument to make later.

For agents, the discipline is simple. Do not operate from the unsigned version. “Everyone knew what we meant” is expensive evidence. A signed amendment is much cheaper than a deposit dispute.

Frequently Asked Questions

Is an extension valid if only one party signed it?

Generally no. Where the contract requires signed written modification, an addendum signed by one side is a proposal. Until every party intended to be bound has signed, the original deadline ordinarily governs.

Can a closing date be extended by text message?

Under the current Florida Realtors/Florida Bar and NABOR forms, text messages are not an approved method of delivering notice, and the NABOR form says so explicitly. Separately, a text is not an executed amendment regardless of delivery method.

Does an email saying “that works” count as an electronic signature?

Sometimes courts find intent to sign in an email, but it is a fact-intensive fight nobody wants to have. Use the approved addendum and collect real signatures. Do not build a closing schedule on an informal reply.

If the closing date is extended, do the inspection and financing deadlines move too?

Not automatically. Each period stands on its own unless the contract provides otherwise or the amendment moves it expressly. List every affected deadline in the amendment.

The closing date already passed and nobody signed anything. Now what?

Do not simply keep going. There may be a default that needs to be addressed, along with waiver and reinstatement of the contract, in writing. Get the contract and the correspondence reviewed before anyone sends the next scheduling email.

Talk to a Southwest Florida Real Estate Attorney

Prell Spearing Law Firm handles real estate contract drafting, amendments, deposit disputes and closing failures throughout Lee, Collier, Charlotte and Sarasota Counties.

If a deadline is about to pass, an addendum is sitting unsigned, or a deposit is already in dispute, contact the firm — these matters are much easier to fix before the date than after it.

Related reading: Real Estate Contract Review · Seller Disclosures in Florida · Solar Panels Can Kill a Florida Closing

This article provides general information about Florida law as of the date of publication. It is not legal advice and is not a substitute for advice from counsel regarding a specific transaction. Case examples are composites with identifying details changed.