Most outreach goes to a list of everyone who fits a description. HVAC companies in a zip code, homeowners with a certain roof age, brokers in a metro. Some of those people need you this month. Most do not, and they can tell the message was sent to a thousand others. Signal-based outreach starts from the other end. You wait for something to happen that makes your service relevant, then you reach out while it is still true. This post covers the signals worth watching for service companies and real estate firms, how to turn a signal into a message, and where the approach goes wrong.
What a signal is (and is not)
A signal is a recorded event that changes what a person needs right now. It has three parts: something happened, you can find out about it from a source you are allowed to use, and you can reach the right person while it still matters. Plenty of things called signals fail that test. A company "growing" or a person "visiting a website" tells you very little. A signal is closer to a fact on a record: a permit was pulled, a house sold, a lease is ending, a customer has gone quiet for two years. The good ones share a trait. They tell you what to say. If the only thing the signal tells you is that someone exists, it is just a list with a nicer name.
Signals that work for service businesses
These come from public records and from the company's own customer data. They are the ones we look at first. Permits. A building, roofing, electrical or pool permit is a public record in most places. It shows a job is underway at an address, and it often names a contractor. For a trade company, a nearby permit can mean the neighbors are thinking about the same work. For a supplier, designer or inspector, it says a project just started. Permit access varies by city. The Houston Permitting Center, for example, publishes its own guidance on what is searchable and how to request fuller history through the city's open records process, so start with the city's own site rather than a reseller's summary: houstonpermittingcenter.org. Home sales. A recent sale means a new owner who does not know your name yet and is about to make a round of decisions: locks, HVAC service, pest control, repairs found in the inspection. It also means the seller's neighbors are watching the market. For real estate teams, a sale nearby is the natural reason to write to the surrounding street. Lease expirations and renewals. For commercial brokers and property managers, the end of a lease is the single clearest buying window. Tenants decide months ahead, so the message has to land before they have picked a space or a broker. Ownership changes. A property that changed hands, or an entity that was recently formed, often needs a manager, a broker, a lawyer and a set of vendors in short order. The customer's own history. For a company with years of customers, the best signal is already in the system. An open quote that was never answered. A customer whose last service was two summers ago. A maintenance plan that lapsed. This is the cheapest list you will ever work, and it is why database reactivation tends to outperform cold prospecting for established companies.
Turning a signal into a message
A signal earns you one specific sentence. Everything else in the email supports it. Here is a labeled hypothetical so the mechanics are clear. This is an example, not a result. Example: a roofing company sees that three houses on one street pulled reroofing permits this spring. The message to the other homeowners on that street does not say "we are the best roofer in town." It says a few roofs nearby were replaced this season, the company has the same crew available, and a free inspection takes about 20 minutes. The permit is the reason for the email. Without it the message is one more flyer. A few rules keep the message honest:
- Name the event only if you are sure of it. If the record is ambiguous, leave the detail out.
- Do not imply you are watching the person. "A house on your street sold in March" is fine. Anything that sounds like surveillance is not.
- One ask. A reply, a quick call or an inspection, never all three.
- Say who sent it and how to opt out, every time. Email has legal requirements, and phone calls have their own, covered below.
Timing and channel
A signal has a shelf life. A new homeowner is open to a call about service in the first few weeks and is settled in by month three. A lease signal matters most nine to eighteen months out, depending on the space. Decide the window per signal and drop the lead when it closes. Pick the channel by who the person is. Email works well for business owners and for property managers. For homeowners and past customers, a real person on the phone often beats email, which is why we run live calling for clients under their own company name. We cover that in our cold calling program. The same rule applies to every list: scrub against do-not-call rules before anyone dials, and never use automated calling to reach a consumer's cell phone. If email is part of the plan, the sending setup matters as much as the message. We wrote up how we handle domains, mailboxes and warmup in cold email infrastructure in 2026.
What to avoid
- Stacking weak signals. Three vague signals do not add up to one real one.
- Stale data. A permit from two years ago is history, not a signal.
- Buying "intent" lists you cannot check. If you cannot say where a record came from and what it shows, do not send on it.
- Sending too fast. A good signal still needs a verified address and a sensible daily volume. Bounces and complaints will sink a campaign that was otherwise well aimed.
- Promising an outcome. A signal gets you a better conversation. It does not guarantee a meeting or a sale, and the message should never suggest it will.
What we do on client builds
On a client build, we pick two or three signals that match the company's trade, pull the records from public sources and the client's own customer data, verify every contact, and write one short message per signal in the owner's voice. For home service companies, that usually means open quotes, lapsed customers and permits near existing jobs, covered on the home services page. For real estate teams, it means nearby sales, expired and withdrawn listings, and the team's own past clients, covered on the real estate teams page. The monthly owner voice note feeds the message, and the weekly scorecard shows what went out and what came back. The full engine is laid out on how it works.
FAQ
What is signal-based outreach?
Signal-based outreach means contacting people because of a specific, recorded event, such as a permit, a home sale or a lease ending, instead of mailing a broad list. The event gives you a real reason to write and tells you what to say. It works best when the signal is recent and the message names it plainly.
Which signals are best for a home service company?
Start with the company's own history: open quotes that were never answered and customers who have not been serviced in a year or more. After that, look at permits for work near current jobs and recent home sales in the service area. Each one gives a clear reason to reach out and a single, simple ask.
Is it legal to use public records for outreach?
Public records are generally open for use, but what you do with the contact data is regulated. Email must follow CAN-SPAM, including a working opt-out and a real sender identity. Phone calls to consumers must follow do-not-call rules. Rules differ by state and by record type, so confirm with a lawyer before you build a program.