The honest answer from someone who works both sides
I represent builders, and I represent buyers. Before real estate, I spent ten years building homes. So when someone asks me “do I need a realtor for new construction?”, I can see the question from both sides of the sales table, and I try to answer it the way I’d want it answered for a friend.
Here’s the short version. No, you aren’t required to have an agent to buy a new home. Plenty of people buy directly from a builder and it goes fine. But the person sitting in the model home works for the builder, and the contract you’ll sign was written for the builder. Having someone on your side is easy to set up at the start and very hard to add later.
New construction is a large share of this market, too. In August 2026, 297 of the 955 single-family homes that closed in Ada County were new construction, about 31% (Boise Regional REALTORS, August 2026). That’s a lot of people signing builder contracts every month.
Who the on-site sales rep works for
The on-site sales consultant is usually a friendly, knowledgeable person who knows the floor plans inside and out. I mean that. I’ve worked alongside a lot of them.
But they work for the builder. Their job is to sell the builder’s homes, at the builder’s prices, on the builder’s contract. That doesn’t make them dishonest; it makes them the builder’s representative. They can answer your questions, but they can’t advise you on whether a term in the contract is good for you, whether that incentive is worth more as a price reduction, or whether the lot backing up to the future road is the one you’ll regret.
Think of it like a car dealership. The salesperson can be lovely. They still don’t work for you.
What a buyer’s agent actually does on a new build
On a resale home, a lot of an agent’s work happens before the offer: finding the house, pricing it, negotiating with a seller. On new construction, most of the work happens after you pick the house. Here’s what I do for a buyer on a new build:
Read the builder’s contract with you. Builder agreements are their own forms, not the standard ones used for resale homes. I look at deposit terms, what happens if the completion date moves, what’s actually included, and what the warranty covers. I’m not an attorney, and for legal questions you should talk to one, but I can show you where to look and what to ask.
Negotiate incentives. Builders often offer help with closing costs, rate buydowns, or upgrade credits. The question is which mix is worth the most to you, given how long you plan to stay. I cover this in detail in the builder incentives guide and the rate buydown guide.
Help with options. At the design center, some choices are structural and can only happen during the build: an extra garage bay, a covered patio, plumbing rough-ins for a future bathroom. Others are cosmetic and can be changed later for less. After ten years of building homes, I can help you tell which is which so the budget goes where it can’t be redone.
Walk the house. I attend the pre-drywall walk, the final walkthrough and the 11-month warranty walk, and I can tell you what’s normal construction and what’s a real problem. Here’s the checklist I use.
Watch the timeline. New builds move. Rate locks, appraisal timing, the sale of your current home, and the builder’s completion date all have to line up. Keeping those in order is a big part of the job, especially if you’re relocating and can’t drive by the lot every week.
One of my clients put it better than I can: “He consistently showed up whenever we needed him to and went to bat for us.” — Riley S
Registration: why the first visit matters
This is the part most people don’t know until it’s too late. Many builders require your agent to be registered at your very first visit to the community or model home. Some ask your agent to come with you in person. Some will accept an agent’s registration by email ahead of time. And some won’t work with an agent at all if you’ve already visited and signed in on your own.
Policies vary from builder to builder, and they can change, so I won’t tell you what any particular builder does. What I’ll tell you is this: if you think you might want representation, talk to an agent before you walk into a model home or fill out a guest card. If you’ve already visited, don’t panic. Just ask the builder directly what their policy is.
If you’re relocating from out of state and browsing builder websites from a distance, the same rule applies to online inquiries. A builder may treat a web form or a phone call as your first contact, so mention your agent there too.
How the buyer-agent fee is handled
People ask me this all the time, and they deserve a straight answer.
On new construction, how the buyer’s agent is paid varies by builder and is written into the contract. Some builders address it in their own purchase agreement, and you and your agent will also have a written agreement that spells it out. I’m not going to quote numbers here, because it’s different from builder to builder and deal to deal.
What I will promise is that you’ll see it in writing, in plain language, before you sign anything. If something about how the fee is handled doesn’t make sense to you, ask. That’s a reasonable question, and any agent should be glad to answer it.
When going without an agent might be fine
To be fair: if you’ve bought new construction before, you’re comfortable reading a long contract, you’re local and can visit the site often, and you know what you’re looking at on a walkthrough, you might be fine on your own. Some people are.
But if you’re a first-time buyer, moving from out of state, or just don’t want to wonder whether you’re missing something, it’s worth having someone in your corner. Especially someone who has built homes.
What I’d do if it were me
Before visiting a single model home in Meridian, Eagle, Star or Kuna, I’d pick an agent who knows new construction, have them register me, and walk in together. Then I’d read the incentives guide so I knew what to ask for before I fell in love with a floor plan.
If you’d like to talk it through, I’m happy to answer questions, even if you end up deciding to go it alone. You can learn more about me or read what clients have said.