Back-Up Contract Addendum Template: Terms and Timing Details

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Back Up Contract Addendum Template

This Back Up Contract Addendum (“Addendum”) is entered into as of [Date], by and between:

Seller: [Full Name / Company Name]

Address: [Address]

Phone: [Phone]

Email: [Email]

Buyer: [Full Name / Company Name]

Address: [Address]

Phone: [Phone]

Email: [Email]

Together referred to as the “Parties.”

This Addendum supplements and is attached to the Primary Contract dated [Primary Contract Date] regarding the sale/purchase of [Property/Asset Description].

1. Purpose of Addendum

This Addendum establishes the terms and conditions under which the Back Up Contract will take effect if the Primary Contract is terminated, cancelled, or otherwise fails to close.

2. Activation of Back Up Contract

a. The Back Up Contract shall automatically become effective upon written confirmation from the Seller that the Primary Contract is void or no longer enforceable.

b. The Buyer acknowledges that this Addendum does not grant immediate rights to the property or asset but ensures priority consideration should the Primary Contract fail.

3. Purchase Terms

a. Purchase Price: $[Amount]

b. Earnest Money Deposit: $[Amount] to be deposited within [X] days of activation.

c. Payment Method: [Wire Transfer / Certified Check / Other]

4. Conditions Precedent

The Back Up Contract is subject to:

Seller’s valid termination of the Primary Contract.
Buyer’s ability to obtain financing (if applicable).
Completion of inspections, disclosures, or other contingencies as outlined herein.

Seller’s valid termination of the Primary Contract.

Buyer’s ability to obtain financing (if applicable).

Completion of inspections, disclosures, or other contingencies as outlined herein.

5. Inspection and Due Diligence

a. Buyer shall have [X] days from activation to complete inspections and due diligence.

b. If issues arise, Buyer may terminate the Addendum without penalty by providing written notice within this period.

6. Closing Date

The Closing shall occur within [X] days from the effective activation date unless mutually extended in writing by both Parties.

7. Representations and Warranties

Both Parties reaffirm the representations and warranties set forth in the Primary Contract, except where inconsistent with the provisions of this Addendum.

8. Termination of Addendum

This Addendum automatically terminates if:

The Primary Contract successfully closes.
The Buyer withdraws by providing written notice before activation.
Either Party fails to meet the conditions precedent outlined above.

The Primary Contract successfully closes.

The Buyer withdraws by providing written notice before activation.

Either Party fails to meet the conditions precedent outlined above.

9. Governing Law

This Addendum shall be governed by and construed in accordance with the laws of [State/Country].

10. Entire Agreement

This Addendum, together with the Primary Contract, constitutes the entire understanding of the Parties and supersedes all prior discussions or agreements regarding a back-up arrangement.

11. Signatures

Seller: ___________________________

Name: [Full Name]

Date: ___________________________

Buyer: ___________________________

Name: [Full Name]

Date: ___________________________

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Back-Up Contract Addendum Template: Terms and Timing Details

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Reviewed July 2026 Free download, PDF & DOCX

What is a Back Up Contract Addendum?

A Back Up Contract Addendum is a supplementary agreement attached to a real estate purchase contract that positions a buyer’s offer as a “back up” in case the primary contract falls through. It establishes the terms under which the secondary buyer’s contract becomes active, protecting both the seller and the back up buyer.

Why is a Back Up Contract Addendum important?

It provides clarity and reduces uncertainty during real estate transactions. If the first buyer fails to close due to financing, inspection issues, or other contingencies, the back up contract immediately comes into effect without requiring renegotiation. This saves time for sellers and ensures serious buyers remain in line for the property.

When should you use a Back Up Contract Addendum?

It should be used when multiple offers exist and the seller wants a safety net in case the primary contract fails. Buyers who are strongly interested in a property but not selected as the first choice can agree to such an addendum, giving them a clear second position.

What should a Back Up Contract Addendum include?

It should state the property details, seller and buyer information, original purchase agreement reference, the priority of contracts, conditions under which the addendum becomes effective, deadlines for notification, and any special terms agreed by the parties.

Need a customized Back Up Contract Addendum?

Use our AI-powered builder to create a tailored Back Up Contract Addendum that complies with your jurisdiction’s laws, protects your rights, and ensures a smooth transition if the primary contract is terminated.

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