Addendum

A separate document added to a contract that adds or changes terms. Both sides sign it. Common addenda cover inspections, financing, and lead-based paint.

Offers & contracts · Updated September 2026

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Where this comes up: under contract

This word belongs to the under contract part of a sale. Here is what that part holds, in order.

  1. Go under contractSign the purchase agreement · Confirm earnest money is deposited
  2. Buyer's inspectionCoordinate access for the inspector · Give the inspector clear access
  3. Title workOpen title with your closing team · Review the title commitment
  4. Settle repairsDecide what you'll fix and what you'll credit · Collect contractor quotes

Your Room keeps this list for your own sale, with your dates on it.

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Part 1 of 4

Why a seller cares

Almost every contract is changed at least once after signing, and an addendum is how. If it is not written and signed by both sides, it did not happen, however clearly it was agreed by text.

Part 2 of 4

A simple example

After the inspection you agree to a $2,000 credit instead of repairs. A one-page addendum says so, both sides sign it, and the title company reads it at closing.

Addendum: a simple example
What was agreedHow it is made real
A $2,000 credit instead of repairsA repair addendum, signed by both sides, sent to the title company
Closing moves from the 14th to the 21stA closing date addendum; every deadline tied to closing moves with it
Agreed by text, never written upNothing changes; the original contract still controls at closing

The contract at closing is the original plus every signed addendum, and nothing else.

Part 3 of 4

What people get wrong

That a text or an email saying "fine, $2,000 it is" changes the contract. Until the addendum is signed by both sides, the original terms still stand.

Part 4 of 4 · where to read next

Where it appears in the sale

What a definition is, and what it isn't

Keighbor is a software company, not a law firm, brokerage, or tax adviser. This is general information, not legal, tax, financial, or real estate advice about your sale. Your situation may differ. Before acting on a contract, disclosure, title, tax, or pricing question, ask an appropriately licensed professional in your state.

Written and researched by Keighbor Research · drawn from the reference glossary · how we research and check what we publish

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In your Room, this word explains itself where it appears.

Your Room defines addendum in the step you meet it in, beside the document or the date it belongs to. Free to set up, with an agent or on your own.

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