Industry
Part of The electrification errors that cost time, not just money
Electrification mistakes when hiring: the contractor checks people skip
How to verify a contractor before signing: license status, permit history, insurance, program participation and the warning signs in a quote.
Contractor selection determines more of a project outcome than equipment selection, and it is verified far less carefully. Most households check reviews and price. The checks that actually predict trouble take about an hour and almost nobody does them. Here they are.
What to take away
- Verify the license with the issuing authority, not with the contractor.
- Ask who pulls the permit; the answer is diagnostic.
- Insurance certificates should come from the insurer, not as a photograph.
- Program participation means somebody else audits the work.
The verification hour
- License. Look the company and the named license holder up with your state or local licensing authority. Confirm the license covers the trade doing the work, and that it is current.
- Permit history. Many building departments publish permit records. A company doing regular permitted work in your jurisdiction is a good sign.
- Insurance. Ask for a certificate sent directly by the insurer or broker, naming you, with current dates.
- References for this specific work. Not general references. Ask for two jobs of the same type in the last year.
- Who does the electrical work. If subcontracted, get the subcontractor's name and verify their license too.
None of that is adversarial, and a competent company answers all five without hesitation.
Warning signs in a quote
| Sign | What it usually means |
|---|---|
| No permit line | Cost deferred to you, or unpermitted work planned |
| No load calculation | Sizing by rule of thumb |
| Large up-front payment | Risk transferred to you for nothing |
| Cash discount for skipping paperwork | Exactly what it sounds like |
| Pressure to sign today | A deadline that exists for the seller, not you |
| No named exclusions | Scope not thought through, change orders coming |
Any single item is worth a question. Three together is worth a different company.
The pressure row deserves a note. Same-day discounts are a sales technique rather than a pricing reality, and a company that will not hold a price for a week is telling you how it handles everything else. Licensed trades with steady work do not need to close in an afternoon.
Where structured programs help
Some work is delivered through programs rather than as a straight private contract, and programs bring documentation requirements and quality checks that a homeowner cannot easily impose alone. The federal Home Energy Rebates Program is administered through states, and the eligibility rules, contractor requirements and application processes are set at state level rather than nationally.
That matters for contractor selection in a specific way: program-participating contractors have usually agreed to documentation and inspection requirements. Confirm with your state energy office what is currently running and which contractors qualify, because both change and neither is safe to assume from an article.
Training and credentials
Credentials are imperfect and still informative. Manufacturer training, trade certifications and building science qualifications all indicate somebody invested in competence. On the education side, the Department of Energy's Zero Energy Design Designation recognizes academic programs that teach building science to students entering these careers, which is the upstream end of the same pipeline.
Ask what training the crew actually attending your house has, not what the company holds corporately. For how a job is organized once you have chosen, see our piece on how contractors build a price; the broader error catalog sits in the mistakes that cost time.
Common questions
Is an unlicensed contractor ever acceptable? Not for electrical, gas or mechanical work. Licensing is the mechanism by which the work is inspected at all.
How do I check a license? Through your state or local licensing authority, which usually publishes a searchable register.
Should I ask for references? Yes, for the same type of work, done recently, in your area. General references tell you little.
What if the best-priced quote fails these checks? Then it is not the best-priced quote. It is an incomplete one that will be repriced later.
