Buying New Construction in Northern Virginia: Why You Need Your Own Agent, and Why You Must Register Them on Day One

Last reviewed and updated: October 22, 2026

Who the builder’s sales rep actually works for

The on-site representative is the builder’s employee or the builder’s listing agent. Their job is to sell lots at the builder’s price with the builder’s contract through the builder’s lender. They can be helpful and honest and still not represent you, because they cannot. Virginia agency law lets one person represent only one side unless both agree in writing to limited service. When you walk in alone, you are an unrepresented buyer negotiating against a professional who does this every day.

The first-visit rule, and why it is not reversible

Almost every production builder in Northern Virginia requires your agent to be present or registered on your first visit. If you tour on a Saturday, give your email at the desk, and call an agent on Monday, the builder will usually refuse to recognize that agent and will not pay them. Some builders accept an email pre-registration from the agent within 48 hours before your visit. The safe version is simpler: tell me where you are going before you go.

What I do on a new-construction purchase

1. Read the builder’s contract. It is written by the builder’s attorneys. Earnest money is often non-refundable after a short window, delivery dates are estimates with no penalty, and the builder can substitute materials. I flag what is negotiable and what is not before you sign.
2. Negotiate the real incentives, not the flyer incentives. Builders rarely cut the base price, because it would reset comps for the whole community. They move on rate buydowns, closing-cost credits, design-center allowances, lot premiums, and finished-basement or deck packages. The 2026 Manassas purchase below came with a 3.875 percent rate and $20,000 in credits because we asked for both.
3. Compare the builder’s lender to outside lenders. The builder’s incentive is usually tied to their lender. Sometimes that lender is the best deal; sometimes the credit is smaller than the rate difference. I run both.
4. Coordinate independent inspections. A new house still needs a pre-drywall inspection and a final inspection by an inspector you hire. County inspectors check code, not workmanship.
5. Manage the timeline. If you are selling a home to buy the new one, delivery slips of two to four months are common. My sell-and-buy guide covers how to protect yourself.
6. Know when the builder is motivated. End of quarter, end of fiscal year, standing inventory homes, and the last few lots in a section all move the builder’s number. I also track this from the other side: in 2026 I deliberately held a Broadlands resale listing until the builder’s new-construction inventory thinned, and it sold in nine days.

Where new construction is happening in Northern Virginia in 2026

• Loudoun County: Brambleton, Aldie (Willowsford and the Route 50 corridor), Leesburg, and the Dulles South townhouse communities. The highest volume of single-family new builds in the region.
• Prince William County: Potomac Shores in Dumfries, Haymarket and Gainesville, and townhouse communities along Route 1 and I-95. A strong fit for Quantico and Fort Belvoir families; see my Quantico buyer guide.
• Manassas and Manassas Park: smaller infill communities, often the most affordable new single-family homes between the Beltway and Gainesville.
• Fairfax County: mostly infill and teardown rebuilds in Vienna, McLean, Falls Church, Annandale, and Herndon, with larger communities like Arpina Valley in Herndon the exception. Infill is a different negotiation: custom builders, not production builders.
• Stafford County: the next ring out, where I have closed a handful of purchases for buyers who wanted new construction at a lower price per square foot.

New-construction purchases I have represented

Manassas, 2026: 3.875 percent rate and $20,000 in credits

A first-time buyer and veteran, referred through my Veterans United partnership, bought a new-construction home in Manassas with a VA loan. By negotiating the builder’s incentive package rather than accepting the advertised version, the purchase closed with a 3.875 percent interest rate and a $20,000 seller credit.

Arpina Valley, Herndon, 2026: under contract now

As of October 2026, I am representing a buyer under contract on a new-construction home in Arpina Valley, Herndon. I will update this page with the outcome once it closes.

Stone Mill Corner, Aldie, 2018: the patient first-time buyer

I met this buyer at an open house. We searched together, he decided to wait a year, and when he came back ready we found a new-construction townhouse-style home in Stone Mill Corner, Aldie. New construction gave him a delivery date that matched his savings timeline.

Broadlands, 2026: timing a resale against the builder

From the seller side: I listed a Broadlands home for an investor client only after the builder’s remaining new-construction inventory in the community thinned out, so the resale was not competing with the builder’s incentives. It sold in nine days at $600,000. Knowing the builder’s inventory cycle works in both directions.

Several Loudoun and Prince William builders offer multigenerational floor plans; my multigenerational home guide explains what to look for in a main-level suite.

Frequently asked questions about buying new construction

Do I need my own real estate agent to buy new construction in Virginia?

You are not legally required to have one, but you should. The sales rep represents the builder. Your own agent reads the builder’s contract, negotiates incentives, compares lenders, and arranges independent inspections, and the builder almost always pays the agent’s fee from the sale.

When do I have to register my agent with the builder?

On your first visit, before you sign in or tour the model. Most Northern Virginia builders will not recognize an agent added later. Some accept a pre-registration email from the agent shortly before your visit. Text me before you go.

Does the builder really pay my agent?

In nearly every Northern Virginia community, yes, as a cost of selling the home, the same way a resale seller does. Since the 2024 industry settlement, builders put this in writing; I confirm the builder’s compensation in writing before you register so there are no surprises.

Will I get a lower price if I do not use an agent?

No. Builders price homes with marketing costs built in and do not reset their base price for one buyer, because it would reset values for the whole community. If you come without an agent, the builder keeps that money. It does not become your discount.

Should I use the builder’s preferred lender?

Sometimes. Builder incentives are usually tied to their lender, and the package can be excellent. But compare it against an outside lender’s rate and closing costs. The right answer depends on the numbers that week, which is why I run both.

Do I need a home inspection on a brand-new house?

Yes. Hire your own inspector for a pre-drywall inspection and a final walkthrough inspection. County inspections confirm code compliance, not workmanship, and builders expect independent inspections.

Can I negotiate the price on new construction in Loudoun or Prince William County?

Rarely the base price. Usually the extras: rate buydowns, closing-cost credits, design-center allowances, lot premiums, and structural options. Standing inventory homes and end-of-quarter timing give you the most room.

Does the builder have to give me a property disclosure in Virginia?

The first sale of a new home is exempt from most of the Virginia Residential Property Disclosure Act, but a builder must still disclose in writing any material defects they actually know about (Va. Code § 55.1-702 and § 55.1-704). Your independent inspections are your real protection.

Have you actually represented buyers on new construction in Northern Virginia?

Yes. A 2026 Manassas new build that closed with a 3.875 percent rate and $20,000 in credits, a 2018 new-construction townhouse-style home in Stone Mill Corner, Aldie, for a first-time buyer, and a buyer currently under contract in Arpina Valley, Herndon, among others.

David Mount, REALTOR, CPRES, MRP
The Redux Group of eXp Realty
NVAR Platinum Top Producer

Sources

• Virginia Residential Property Disclosure Act, including the first-sale exemption and builder defect disclosure (Va. Code § 55.1-702, § 55.1-704)
• Va. Code § 54.1-2130 et seq., Real estate brokerage agency relationships
• National Association of REALTORS, 2024 settlement and written buyer agreements