RE-16A Broker Agreement Addendum Explained (Seller Perspective)

The RE-16A is a Broker Agreement Addendum. It is used to change or add terms to an existing brokerage agreement (most commonly the RE-16 Seller Representation Agreement).

This page explains the RE-16A in plain language so you understand what it is doing in your transaction before you sign.

What the RE-16A Is (and What It Is Not)

  • It IS: an addendum that updates an existing representation/brokerage agreement.
  • It is NOT: the listing agreement itself.
  • It is NOT: a purchase contract or anything that changes the buyer’s offer unless the addendum specifically addresses a brokerage agreement term.

Think of the RE-16A as a “change order” for your broker agreement: it documents modifications that both parties agree to, in writing.

Why Sellers See the RE-16A

Sellers usually see the RE-16A when something needs to be updated after the original agreement was signed. Common reasons include:

  • Adding a second brokerage for a co-listing arrangement
  • Adding or changing a co-agent / broker structure
  • Amending how brokerage services are handled (depending on the situation)
  • Amending the compensation structure or related terms in the existing broker agreement

Idaho REALTORS® has specifically referenced using the RE-16A as a way to add a second brokerage in a co-listing scenario when the underlying RE-16 is already in place.

Co-Listing and Adding a Second Brokerage

Although very uncommon, sometimes a seller wants expanded coverage, a specialized skillset, or a team approach that involves two brokerages working together. Idaho REALTORS® notes that while standard representation forms are not specifically designed for co-representation, the RE-16A can be used to add the second brokerage at a minimum.

If the RE-16A is being used for a co-listing, sellers should understand:

  • Who is being added (and whether they are an agent or a separate brokerage)
  • What role each brokerage plays (marketing, showings, negotiations, etc.)
  • How compensation is handled between parties (and whether it changes the seller’s obligations)
  • How communication and decision-making works so nothing falls through the cracks

Amending Compensation Terms (High-Level, Seller-Friendly)

In some situations, the RE-16A is used to document changes to the compensation terms contained in an existing brokerage agreement. Idaho REALTORS® has discussed the RE-16A as a tool designed for quickly making changes to brokerage agreements.

If you are asked to sign an RE-16A that modifies compensation, the practical seller questions are:

  • What exactly is changing compared to the original agreement?
  • Is the change temporary (property-specific) or does it replace the original terms?
  • Does it affect what you pay, when you pay it, or how it is calculated?
  • Does it affect cooperation with other brokerages or buyer-side representation?

Two70 approach: we explain the change in plain terms and show how it connects to the original agreement so you can make an informed decision.

What the RE-16A Usually Does Not Change

Unless the addendum explicitly modifies them, the RE-16A typically does not change:

  • The buyer’s purchase contract terms
  • Your property condition disclosures
  • Title/escrow requirements
  • Inspection rights or repair negotiations

It is primarily a brokerage agreement amendment, not a transaction-wide “catch-all” form.

Seller Checklist Before Signing an RE-16A

  • Confirm which original agreement the RE-16A is modifying (example: the RE-16)
  • Read the specific changes being made—don’t assume it’s “standard”
  • Clarify whether any changes affect your obligations or costs
  • Ask how the change impacts communication, showings, negotiations, and accountability
  • Keep a copy with your transaction records

Where This Fits in Your Seller Document Stack

The RE-16A is one of the “framework” documents in a sale because it governs the brokerage relationship. For seller-side paperwork, you may also see:

Questions About the RE-16A?

If you’re being asked to sign an RE-16A, the right question is always: “What is changing, and why?”

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