Who Does the On-Site Agent Actually Work For?

If you’re considering new construction in St. Johns County, Florida, there’s one question most buyers never think to ask until it’s too late.

You’re standing in a model home. Everything looks great. The finishes are beautiful, the floor plan works, and the on-site agent has been friendly, knowledgeable, and genuinely helpful. You’re starting to get excited.

Then a question crosses your mind: whose side is this person actually on?

It’s a good question. And the answer matters more than most buyers realize.

The short answer

The on-site agent works for the builder. Not for you.

This isn’t a criticism of those agents — many of them are excellent at their jobs, deeply knowledgeable about the product they’re selling, and genuinely pleasant to work with. But their job is to sell homes for their employer. That’s the role they’re in, that’s who pays them, and that’s where their legal obligations run.

In Florida, this is formalized through the concept of fiduciary duty. A fiduciary is someone legally obligated to act in your best interest — not their own, not their employer’s, yours. The on-site agent has a fiduciary duty to the builder. They cannot simultaneously have one to you.

What fiduciary duty actually means in practice

It’s easy to understand this in the abstract. It’s more useful to understand what it means when you’re sitting across a table from someone reviewing a purchase agreement.

A buyer’s fiduciary agent — someone who legally represents you — is obligated to:

Tell you things that might make you not buy. If there are known issues with a particular lot, a drainage problem in the community, a planned development nearby that could affect your view or your resale value — your agent has to tell you. The builder’s agent is not required to volunteer information that might cost their employer a sale.

Negotiate on your behalf. Builders have more flexibility than their price sheets suggest — on lot premiums, on upgrade packages, on closing cost contributions, on rate buydowns. A fiduciary buyer’s agent negotiates that flexibility in your direction. The on-site agent negotiates it in the builder’s direction.

Give you an honest read on the contract. New construction purchase agreements are written by the builder’s attorneys. They’re designed to protect the builder. Your fiduciary agent reads them looking for what’s missing or one-sided — not to kill the deal, but to make sure you understand what you’re signing.

Tell you when you’re making a mistake. If you’re about to overpay for an upgrade that adds nothing to resale value, or accept a financing incentive that costs you more over the life of the loan than it saves at closing, your fiduciary agent says so. The on-site agent cannot.

What the on-site agent can and can’t do

Florida law allows builders to use different agency models, but the most common arrangement you’ll encounter in new construction communities is this: the on-site agent represents the builder as a transaction broker or as a single agent for the seller.

As a transaction broker, they’re required to deal honestly with you and provide certain basic disclosures — but they are not your advocate. As a single agent for the seller, their loyalty runs entirely to the builder.

Either way, there are things they simply cannot do for you:

Builder’s on-site agent	Your independent buyer’s agent
Cannot negotiate against their employer’s interests	Negotiates on your behalf — upgrades, price, incentives, closing costs
Not required to disclose information that might hurt the sale	Required to disclose anything material to your decision
Reviews the contract from the builder’s perspective	Reviews the contract looking for what protects you
Recommends the builder’s preferred lender	Helps you evaluate whether that lender’s offer is actually competitive
Has an interest in you buying this specific home	Has an interest in you making the right decision — even if that means walking away

The commission question — and why it doesn’t cost you anything

Here’s what surprises most buyers: having independent representation in new construction typically costs you nothing extra.

Builders budget for buyer’s agent commissions as a cost of doing business. That money is already priced into the home whether you bring an agent or not. If you walk in unrepresented, the builder doesn’t give you a discount — they simply keep the commission themselves.

There are some nuances here — commission structures have shifted since the NAR settlement in 2024, and some builders have adjusted how they handle buyer’s agent compensation. This is exactly the kind of thing worth clarifying before you walk into any sales office, which is another reason the conversation is worth having before your first visit.

The timing issue that most buyers miss

There’s a practical problem with trying to get buyer representation after you’ve already visited a new construction community: procuring cause.

Most builders have a policy that if you visited a community without a registered buyer’s agent, and then later try to bring one in, they’ll dispute whether that agent is entitled to any commission. The argument is that the builder’s team was the “procuring cause” of the sale — meaning they were the ones who introduced you to the community.

Since the NAR settlement, Florida agents are also required to have a signed Buyer Representation Agreement in place before showing any property. This makes the timing even more important — if you want independent representation, that relationship needs to be established before your first visit, not after.

The moment you walk into a sales office and register your name, the window for clean independent representation starts to close.

This isn’t about distrusting the on-site agent

It’s worth saying clearly: none of this is an indictment of on-site agents as people. Most of them are knowledgeable professionals who are good at their jobs and will treat you respectfully. The issue isn’t character — it’s structure.

When someone’s paycheck depends on you buying a particular home, there are limits to how fully they can advocate for you, regardless of how much they’d like to. Those limits are baked into the relationship. Understanding them isn’t cynical — it’s just accurate.

You wouldn’t ask the seller’s listing agent to advise you on whether the house is fairly priced. The same logic applies here.

What independent representation actually looks like

Having a buyer’s agent in a new construction transaction doesn’t mean someone follows you around the model home or sits in on every conversation. It means someone is in your corner on the things that actually matter:

Reviewing the purchase agreement before you sign it. Evaluating the upgrade package for real versus cosmetic value. Running the numbers on the builder’s financing incentives against market alternatives. Giving you honest context on the community, the builder’s reputation, and the surrounding area’s trajectory. And being available to answer the questions you don’t know to ask until it’s almost too late.

It’s the difference between going into the largest financial decision of your life with a knowledgeable advocate — and going in alone.