Contract Addendum

Change an agreement you already have, and leave the rest alone.

Add or change terms in an existing contract.

  • Business / Legal document
  • Customizable
  • Lawyer reviewed

How to get this document

Ready to use

Ready-to-use document + 1-hour consultation

$50.00

Placeholder price — not a confirmed price.

Download the ready-to-use document and get a one-hour consultation with a specialised lawyer.

  • The document as a file you download
  • A one-hour consultation with a specialised lawyer
  • A standard version you complete yourself

Lawyer prepares it

Still not sure? Talk to a lawyer

$70.00

Placeholder price — not a confirmed price.

Don’t worry: book a consultation, tell the lawyer what you need, and they will prepare the document for you.

  • A consultation with a specialised lawyer
  • You describe what you need, in your own words
  • The lawyer prepares the document for you

Customized

Customized document

Guided online builder, available now for all 50 states and the District of Columbia.

Use the guided builder to prepare this document for you, answer by answer.

  • Guided questions, built for your state
  • Watch the draft take shape as you answer
  • Reviewed by a qualified lawyer before it is final

Key features

  • Point to the original

    Give its title, its date and a short description, so the addendum is tied to the right contract.

  • Choose the parts you are changing

    Select one or more areas, such as payment or term, and describe the change.

  • Say what is added and removed

    Write the wording being added and the wording being taken out, where you have it.

  • Set when it takes effect

    Give the date the change applies from.

  • Both parties named

    The parties are named and sign the addendum, with the original carrying on otherwise unchanged.

  • A lawyer reviews it before it is used

    Your answers are prepared into a draft and reviewed by a qualified lawyer, rather than handed back to you as a finished form.

About this document

A contract addendum records a change to an existing agreement. It identifies the original, says what is being changed, and confirms that everything else stays as it was.

It is useful when the parties want to adjust a term, such as a fee, a date or the scope, without rewriting the whole contract.

The builder does not read your original agreement. You describe it and the change in your own words. Whether the change is effective, and whether the original allows it to be made this way, are questions a lawyer reviews.

Is this document right for you?

Useful when

  • The fee, scope or timeline of a signed contract needs to change
  • Both sides agree to add or remove a term
  • You want the change in writing, not just in emails
  • You do not want to restate the whole agreement

Commonly used by

  • Businesses with ongoing client or supplier contracts
  • Landlords and tenants adjusting terms
  • Freelancers and the clients they work for
  • Anyone renegotiating a signed agreement

Not sure? about your situation first.

Alternatives

When to use this

  • When a project grows and the fee is adjusted
  • When a delivery date moves
  • When a clause is removed by mutual agreement

What happens next

Ready to use

  1. Choose your document

  2. Pay

  3. Download

  4. Book your consultation

Lawyer prepares it

  1. Pay

  2. Tell us what you need

  3. Talk to a specialised lawyer

  4. They prepare your document

Customized

  1. Answer guided questions

  2. Your document is prepared

  3. Lawyer review

  4. Legal finalization

  5. Submit for review

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Questions

About the contract addendum

  • It is a short document that changes an existing contract. It names the original agreement, states the change and confirms that the rest of the contract stays in force.

Still have a question? .