C.A.R. Form ADM — the Addendum

Where it is normally used

Most commonly at the start, attached to an offer, carrying terms the standard form has no space or field for. Because it becomes part of whatever it is attached to, an addendum riding along with an offer is part of what the other side is accepting when they accept.

It is also used mid-transaction to add material to a document that is not the purchase agreement, which is the use that distinguishes it most clearly from an amendment.

Addendum or amendment

The distinction the forms draw is about what is being done rather than about when: an amendment changes contractual terms already agreed, and an addendum supplements. In practice California agents use addenda for changes as well, including price reductions and credits, and it generally works.

What matters more than the label is whether the document is unambiguous and signed by everyone bound by the original contract. A perfectly labeled form that leaves a reader guessing what changed has failed at the only job it had.

What separates a usable addendum from a vague one

An addendum becomes part of whatever it is attached to, which means it is read months later by people who were not in the conversation — an escrow officer, an underwriter, sometimes a reviewer looking at a file that went wrong. The test that matters is whether one of those readers could tell exactly what was added, to which document, and with what effect, without asking anyone.

The common failure is an addendum that adds a term without saying what happens to the term it sits alongside. Language that grants something without naming the provision it modifies leaves two clauses that both appear to apply, and the disagreement surfaces at closing when there is no time to resolve it. Naming the document by title and date, and saying plainly whether a term is added, replaced or clarified, removes almost all of that risk at no cost.

Forms this touches

Named so you know which document the conversation ends in. Their text is not reproduced here.

• ADM — Addendum
• AEA — Amendment

Questions that come up

Related in this guide

• C.A.R. Form AEA — the AmendmentThe C.A.R. Amendment form changes a binding contract — and revokes itself if it is not accepted within three days. What that means in practice.
• Who has to sign a change to the contractEveryone bound by the original contract signs a change to it. Where that catches California deals: trusts, estates, co-owners, and spouses.
• Reducing the price mid-escrow in CaliforniaRenegotiating a California price mid-escrow, why the appraisal contingency runs on its own clock, and what a change does to the loan.