What happens if you tour a spec or builder's office before you have an agent?

The most expensive walk in new construction is the casual one. A Sunday visit to a spec, a signature in the guest book, a friendly chat with the on-site team — and a buyer may have quietly narrowed their representation options before ever deciding to buy.

The mechanics, in order

First, the builder’s side. Builders that pay buyer-broker compensation commonly require the agent to be registered at or before the buyer’s first visit — the policy is written, and it protects the builder from paying a fee to an agent who did nothing. Sign in unrepresented and the builder’s file says you came in alone. Bring an agent two weeks later and some builders will honor it, some will negotiate, and some will point at the policy. You don’t get to pick which builder you already visited.

Second, California’s side. Since January 1, 2025, AB 2992 requires a written buyer representation agreement between you and an agent before the agent tours property with you — model homes, spec offices, and lot walk-throughs included. The agreement states the fee, and in California it’s capped at three months and can’t auto-renew. What to check before signing one: buyer representation agreements in California.

Third, the money. On a $4M–$8M spec, a budgeted 2–3% co-broke is a six-figure fee the builder was already prepared to pay for your representation. Walking in unrepresented can vaporize it without lowering your price — the least favorable trade in the transaction. And that same fee is worth understanding as an incentive once you do have an agent: does builder commission bias which homes an agent shows?

The clean sequence

Choose the agent deliberately — for this assignment, that means new-construction and builder-contract experience, not just a good resale record (the assignment page, the addendum). Sign the representation agreement. Have the agent register you with each builder in writing before you visit. Then walk everything you want.

Register first. Walk second.

Questions people ask

Why do builders care who walked in first?

Procuring cause and marketing economics. The builder budgets a buyer-broker fee to attract represented buyers; if you arrive without an agent, their sales office 'procured' you, and many policies then decline to pay — or recognize — an agent who appears afterward. It's not personal; it's their written policy, which is why you ask for it before visiting.

I already signed a guest book last weekend. What should I do in the next 48 hours?

Don't sign anything else, and don't go back alone. Get the builder's registration policy in writing, then tell any agent you're considering exactly which communities you visited, when, and what you signed — a candid agent will tell you which representation options survive at each one. Some builders honor a late registration within a window; some never do.

Does the builder's on-site agent represent me?

No — the sales office works for the builder. They can be helpful and entirely professional, and their job is still the seller's outcome: price, upgrades, contract terms, timelines. The builder contract is written by their side; the person reading it for your side is the agent you registered.

Does this apply to touring a vacant lot with an agent too?

In California, yes on the representation piece — the written buyer agreement requirement applies before an agent tours property with you, lots included. Lot walk-throughs rarely involve guest-book registration, but the representation paperwork question is the same.