Can a plumbing company also advertise electrical work on its website?

Only if it holds the license for that trade. California's board says licensed contractors are not allowed to advertise for construction work outside of the trades for which they are licensed. List each trade you are licensed for, give each its own service pages, and keep the classification next to each service so that no page offers work you cannot legally do.

How can a homeowner check my contractor license in California?

On the Contractors State License Board's Check a License page, a homeowner can search by contractor license number, by contractor name, or by the name of a person linked to the license. Show the number and the exact business name from your license on every page, so that the search finds you at the first attempt and the facts match what assistants read.

Which schema type fits a company that does plumbing and heating?

Use both Plumber and HVACBusiness as an array. Google's local business guide says that a business with multiple types should specify them as an array, and gives its own example of a business typed as Electrician, Plumber and Locksmith. Schema.org places all of these under HomeAndConstructionBusiness. Put the labels on the page that describes the company, matching the visible text.

Why does Google call plumbing, electrical and HVAC work urgent categories?

Google's Local Services Ads requirements page says consumers often call these trades for time-sensitive needs, giving examples such as a hot water outage, exposed wiring and a heater that is broken in freezing temperatures. For that reason the professionals in these categories undergo an additional level of screening, which includes background checks of the service professionals who go into homes.

Do the workers I send to homes need background checks for Local Services Ads?

In the applicable categories, yes. Google's screening page says the background check covers the business, the owner and the field worker roster, meaning employees, contractors, subcontractors and other workers who provide services in customers' homes. Office staff who do not serve customers directly are excluded. Google adds that the process involves identity and criminal history checks and no credit check.

What should a roof replacement page answer first?

It should answer the question in its heading in the first sentence, for example how many days the work usually takes for a house of that size, and then explain what changes the price, the steps, and what the homeowner must prepare. Put the license number and the request for a written estimate on the same page, since those are the checks a homeowner makes next.

Should a trade website show prices for repairs?

Show the prices you are sure of, such as a call-out charge or a starting price, and explain what changes the final figure. The Federal Trade Commission tells homeowners to get multiple estimates and says a written estimate should include the work to be done, the materials, the completion date and the price, so offer exactly that form of estimate and say so on the page.

What should a trade business near a state border say on its website?

Say in which states it holds licenses, and keep the service area inside them. Google's page on how providers qualify notes that a business on the border of two states may not be authorized to work in both. A page for a town across the line should state the license that covers work there, or should not exist until the business holds one.

How does a plumber, electrician, heating and cooling company or roofer become the answer when a homeowner searches?

Which questions homeowners ask in an emergency and when they plan a job, which answer places serve each, what Google checks before a trade can advertise, and what one state's license board, California's, says a contractor's website must show.

See if customers can find you

A trade business becomes the answer when its Business Profile and its pages state, in the first lines, the facts a homeowner checks before calling: which jobs it does, in which towns, at which hours, whether it answers emergencies, and its license number with the exact business name that the license board shows. Urgent jobs are answered on the map and the call button, planned jobs such as a new roof or a heat pump on a service page for each job, and in California the Contractors State License Board reminds contractors that the license number belongs in all advertisements, websites and online postings included.

Which questions do homeowners ask before they call a trade?

A homeowner who needs a plumber, an electrician, a heating and cooling company (the trade often called HVAC) or a roofer is in one of two situations. Either something has broken and they need help today, or they are planning a job and want to understand it before they ask for prices. A third set of questions comes in both situations: is this company licensed, insured, and does it work in my town?

The table gives examples for each trade. Licheo wrote these questions on 17 October 2026 as an illustration, with no search figures; their purpose is to show which part of your site or profile each one tests. Notice that the urgent questions are answered by facts that change (hours, who is on call), while the planned questions are answered by explanations that stay the same for months.

Homeowner questions by trade and where the answer belongs: written by Licheo on 17 October 2026 as an illustration, with no search counts.
Trade	Question a homeowner might ask	Type	Where the answer belongs
Plumbing	water heater leaking at night, who is open now	Urgent	Hours, after-hours line and call button on the Business Profile; an emergency page with the same hours
Plumbing	what does it cost to replace a water heater	Planned	The water heater page: what changes the price, in the first lines
Electrical	electrician to add an outlet in the garage	Planned	A page for small electrical jobs, listing them by name
Electrical	is this electrician licensed	Check	License number and legal business name in the footer of every page
Heating and cooling	furnace stopped working in winter	Urgent	Profile hours and an emergency page that says which nights and weekends are covered
Heating and cooling	heat pump or furnace for an older house	Planned	A comparison page with the deciding factors in a table
Roofing	roof leaking after a storm	Urgent	A storm repair page that says how fast someone can come and what they do first
Roofing	how long does a roof replacement take	Planned	The roof replacement page, with the steps and the usual days of work
All trades	do you work in my town	Check	Service area on the profile and one page listing the towns served

Which answer places serve urgent jobs, and which serve planned jobs?

For a trade, answer engine optimization (AEO) means that when a homeowner asks Google, Bing or a voice assistant, the answer they get comes from your profile or your pages. For the trades, the two situations above lead to different answer places.

Urgent jobs are answered on the map. The Google Business Profile (the free listing in Google Maps and Search) gives the hours, the phone number and the call button, and a voice assistant reads the same facts aloud. Google itself recognizes the urgency of three of these trades: its Local Services Ads requirements call plumbing, electrical work and HVAC urgent categories, because, in Google's words for plumbing, consumers often call plumbers for time-sensitive, urgent needs, such as a hot water outage. For an urgent question, the answer that serves the homeowner is short and current: open now, a person answers, we come to your town.

Planned jobs are answered by pages. The featured snippet (the boxed result in which Google shows the answer text first), People Also Ask (the list of related questions that open to a short answer from a web page) and the answers in Google's AI features all quote pages that explain one job well. A roof replacement page should open with how long the work takes, what affects the price and what the homeowner must do before the crew arrives, so that any passage Google quotes answers the question on its own.

What do license rules say a contractor's website must show?

Each state licenses contractors in its own way, and Google's own screening page asks businesses to confirm county and city licenses as well; this page quotes California, whose Contractors State License Board documents we opened in full. In Industry Bulletin 20-21 of 17 September 2020, the board reminded licensed contractors to include their license number on all commercial vehicles and advertisements, and it added: This includes online sales postings and websites, as well as newspaper, radio, and television advertisements. The bulletin names the laws behind the reminder, Business and Professions Code sections 7027, 7029.5 and 7030.5 and section 861 of the California Code of Regulations.

The same bulletin gives two more rules that shape what a trade website may say. Licensed contractors are not allowed to advertise for construction work outside of the trade(s) for which they are licensed, and contractors, by law, are not allowed to advertise that they are bonded, because it could lead the public to believe there is a higher level of protection than might actually be the case. The board puts the civil penalty for breaking contractor advertising laws at $100 to $5,000.

For answer engine optimization these rules are useful as well as binding. A license number in the footer of every page, the classification next to each service, and a business name identical to the one on the license give Google, an assistant and the homeowner the same checkable facts. If you work outside California, ask your own state or county licensing office what your advertisements must show.

How does a homeowner check a contractor, and what should your pages show for it?

The Federal Trade Commission's consumer advice page How To Avoid a Home Improvement Scam, dated July 2022, tells homeowners to check with your state or county government to confirm a contractor's license, and to ask the contractor for proof of insurance. It also says: Get multiple estimates, and adds that a written estimate should include a description of the work to be done, materials, completion date, and the price.

The California board's Check a License page shows how that check works in practice: a homeowner can search by the contractor license number, by the contractor name, or by the name of a person linked to the license. Think of what this means for your site. If the business name on your website differs from the name on the license, or the number is missing, the homeowner who follows official advice cannot match you to your license, and an assistant comparing sources finds two different names.

So the pages should answer the homeowner's checking questions before they are asked. In the end, the aim is simple: a homeowner who follows the official advice should be able to check every fact about you from your own pages.

The license number and the legal business name, exactly as the license board shows them, on every page.
The trade classification next to each service, so that no page offers work outside it.
The types of insurance the business carries, and an offer to send proof on request.
How estimates work: in writing, with the work, the materials, the completion date and the price.
The towns served, matching the service area on the Business Profile.

What does Google check before a trade business can advertise in Local Services Ads?

Local Services Ads is Google's advertising program for local service businesses, and Google screens each advertiser before its ads run. For the urgent categories (plumbers, electricians and HVAC), Google's United States requirements page says that professionals undergo an additional level of screening, including service professional background checks. The screening page explains that, in the categories where it applies, the check covers the business, the owner and the field worker roster: employees, contractors, including subcontractors, or other workers who provide services in customers' homes. It also says the background check process doesn't involve a credit check or a credit pull.

Roofing is listed without the urgent note, with business and owner checks for select users, general liability insurance and state licenses. For every trade, Google's page on how providers qualify says Google verifies applicable state licenses and confirms that all workers are appropriately licensed, and it adds a point that matters near a state line: where a business is on the border of 2 states, the provider may not be authorized to work in both states.

Whether or not you buy these ads, the list shows what Google treats as proof that a trade business is real. Put the same facts on your site: the license for each state where you work, the insurance you carry, and a sentence about how you screen the people you send into homes, if you do so.

How should one company that does several trades describe itself?

A company may do plumbing and heating, or electrical and solar work, under one name. Structured data, the set of labels in the page code that tells a search engine what each part of the page is, has a clear answer for this. Schema.org, the shared vocabulary for those labels, groups the trades under HomeAndConstructionBusiness, a LocalBusiness type for businesses that work on homes and buildings, with more specific types beneath it: Electrician, GeneralContractor, HVACBusiness, HousePainter, Locksmith, MovingCompany, Plumber and RoofingContractor.

Google's local business guide, updated on 8 September 2026, asks for the most specific sub-type possible, and for a business with several trades it says to specify them as an array, giving as its own example a business typed as Electrician, Plumber and Locksmith together. So a plumbing and heating company lists both Plumber and HVACBusiness on the page that describes the company.

The same principle applies to the pages and the profile. List only the trades you are licensed for, which California's rule on advertising within your classification also requires, and give each trade its own service pages so that each question finds a page written for it. Our guide to service pages explains the structure of one such page.

What should an urgent job page and a planned job page each answer?

The two types of page open differently, because the reader arrives in a different state of mind. An urgent page is read on a phone, often at night, by someone who wants to know whether you can come. A planned page is read at a desk by someone comparing options. Let's say the same plumbing company writes both: the emergency page and the water heater replacement page should not start with the same sentence, and neither should start with the company's history.

Urgent page, first sentence: the hours covered, the towns covered and how to reach a person now.
Urgent page, next: what the technician does first on arrival and how the call-out is charged.
Urgent page, always: the same hours as the Business Profile, updated before every holiday.
Planned page, first sentence: the direct answer to the job question, such as how long it takes.
Planned page, next: what changes the price, the steps, and what the homeowner must prepare.
Planned page, always: a link to the written estimate request and the license number in the footer.

Part of a larger guide

This page is one part of AEO by industry. The other parts:

Questions people ask

Does a California contractor need the license number on the company website?: Yes. The Contractors State License Board's Industry Bulletin 20-21 of 17 September 2020 reminds licensed contractors to include their license number on all advertisements, and says this includes online sales postings and websites as well as newspaper, radio and television advertisements. The board puts the civil penalty for violations of contractor advertising laws at $100 to $5,000. Other states set their own rules.
Can a contractor's website say the business is bonded?: In California, no. The same bulletin says contractors, by law, are not allowed to advertise that they are bonded, because it could lead the public to believe there is a higher level of protection than might actually be the case. Describe the license and the insurance you carry instead, in plain words, and offer proof on request. Check your own state's rules if you work elsewhere.
Can a plumbing company also advertise electrical work on its website?: Only if it holds the license for that trade. California's board says licensed contractors are not allowed to advertise for construction work outside of the trades for which they are licensed. List each trade you are licensed for, give each its own service pages, and keep the classification next to each service so that no page offers work you cannot legally do.
How can a homeowner check my contractor license in California?: On the Contractors State License Board's Check a License page, a homeowner can search by contractor license number, by contractor name, or by the name of a person linked to the license. Show the number and the exact business name from your license on every page, so that the search finds you at the first attempt and the facts match what assistants read.
Which schema type fits a company that does plumbing and heating?: Use both Plumber and HVACBusiness as an array. Google's local business guide says that a business with multiple types should specify them as an array, and gives its own example of a business typed as Electrician, Plumber and Locksmith. Schema.org places all of these under HomeAndConstructionBusiness. Put the labels on the page that describes the company, matching the visible text.
Why does Google call plumbing, electrical and HVAC work urgent categories?: Google's Local Services Ads requirements page says consumers often call these trades for time-sensitive needs, giving examples such as a hot water outage, exposed wiring and a heater that is broken in freezing temperatures. For that reason the professionals in these categories undergo an additional level of screening, which includes background checks of the service professionals who go into homes.
Do the workers I send to homes need background checks for Local Services Ads?: In the applicable categories, yes. Google's screening page says the background check covers the business, the owner and the field worker roster, meaning employees, contractors, subcontractors and other workers who provide services in customers' homes. Office staff who do not serve customers directly are excluded. Google adds that the process involves identity and criminal history checks and no credit check.
What should a roof replacement page answer first?: It should answer the question in its heading in the first sentence, for example how many days the work usually takes for a house of that size, and then explain what changes the price, the steps, and what the homeowner must prepare. Put the license number and the request for a written estimate on the same page, since those are the checks a homeowner makes next.
Should a trade website show prices for repairs?: Show the prices you are sure of, such as a call-out charge or a starting price, and explain what changes the final figure. The Federal Trade Commission tells homeowners to get multiple estimates and says a written estimate should include the work to be done, the materials, the completion date and the price, so offer exactly that form of estimate and say so on the page.
What should a trade business near a state border say on its website?: Say in which states it holds licenses, and keep the service area inside them. Google's page on how providers qualify notes that a business on the border of two states may not be authorized to work in both. A page for a town across the line should state the license that covers work there, or should not exist until the business holds one.

Sources

Industry Bulletin 20-21: Contractors State License Board Reminds Contractors to Include License Number on Vehicles and Advertisements, Contractors State License Board (California). 17 September 2020, accessed 17 October 2026.
Check a License, Contractors State License Board (California). Accessed 17 October 2026.
How To Avoid a Home Improvement Scam, Federal Trade Commission, Consumer Advice. July 2022, accessed 17 October 2026.
Business screening and verification requirements, United States, Google Local Services Help. Accessed 17 October 2026.
Understand the screening and verification process, Google Local Services Help. Accessed 17 October 2026.
How providers qualify for Local Services Ads, Google Local Services Help. Accessed 17 October 2026.
Local business (LocalBusiness) structured data, Google Search Central. Updated 2026-09-08, accessed 17 October 2026.
HomeAndConstructionBusiness, Schema.org. Accessed 17 October 2026.
HVACBusiness, Schema.org. Accessed 17 October 2026.

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