Working with an electrician
Wiring and the finished plan

When to hire an electrician for lighting, and what to ask

What you can do and what needs a licensed electrician, the warning signs that mean call now, a one-page brief, a question list, permits and licenses, and how to compare quotes.

Start here Essentials

At minimum, sort your plan into what you do and what an electrician does. If nothing needs an electrician, you are done here. Everything marked Go deeper can wait.

  1. Sort every row of the plan. Mark each one "I do this" or "electrician" (who does what). If the electrician column is empty, stop here and go on to Your lighting plan.
  2. Fill in the brief for the electrician rows. Then tick the questions that apply (the brief).
  3. Find your building department's page on electrical permits. Write down what it says about who may pull one and what work needs one (permits).
  4. If you rent, write to the landlord instead. Describe the change and ask for a written answer (renters).

Minimum time: about 15 minutes to sort; about an hour if there is a brief to write. Done when: the brief sheet is filled in for every electrician row, or the plan shows that no electrician is needed.

1. Who does what: your work and an electrician's Understand

The line in this manual is simple to state. Your work is anything that plugs in or screws in: bulbs, lamps, plug-in and battery lights, nightlights, cords kept out of the way, and reading labels. An electrician's work is anything behind a cover plate or a fixture's canopy (the cover that hides the wiring box at the ceiling or wall): new or moved fixtures, switches, dimmers, smart switches, outlets and circuits.

The National Fire Protection Association's consumer message is that electrical work should be done only by a licensed electrician, and that some communities require a license and permits; it adds, find out about the laws in your area (NFPA, Educational Messages Desk Reference, 2026, chapter 12). Ask the authority This manual does not teach replacing a fixture, switch or dimmer, opening a box, or judging wiring. Some places let homeowners do some of this work; St. Louis, below, is one example. Whether you may, and whether you should, are questions for your building department and your own judgment, not this manual.

In the planWho does itWhy
A different bulb in an existing lamp or fixtureYouLight off and cool; within the fixture's wattage label; marked for enclosed fixtures where needed (Bulbs, labels and color).
A new lamp, plug-in nightlight, plug-in or battery under-cabinet lightYou (a renter checks the lease for anything stuck to a surface)Nothing behind a plate. Buy items marked by a recognized testing lab.
A smart bulb or a plug-in smart switchYouIt screws or plugs in. A smart switch in the wall is different.
A new or moved ceiling or wall fixtureElectricianNew wiring or a new box; often a permit.
A second switch (a stair, a long hall, a room with two doors)ElectricianNew wiring between locations.
A dimmer, a smart switch or a sensor switch in the wallElectricianBehind the plate; the dimmer must suit the bulbs; a smart switch may need a neutral wire.
Recessed lights, under-cabinet lights wired in, step or handrail lightsElectricianNew wiring; recessed lights in an insulated ceiling need the right housings.
A replacement fixture in the same placeElectrician, in this manualBehind the canopy. Whether it needs a permit where you live is the building department's answer.
Anything on the warning-sign listElectrician, before anything elseSee warning signs.

When you sort, set the "who does it" column in the plan's layers sheet to me, landlord or electrician. Many plans end with nothing in the electrician column. A renter whose plan is bulbs, lamps and plug-in lights finishes this chapter at the sorting step.

For a larger project, such as a kitchen renovation with a general contractor, this manual on general contracting covers checking what a project needs before it starts (Learn General Contracting, Feasibility and verification) and how trades and proposals fit together (Learn General Contracting, Trades and proposals). This chapter covers the lighting part of that work.

2. Warning signs: call before you plan

Caution

If a switch or outlet plate is hot or discolored, you hear buzzing or crackling, you smell burning or hot plastic, you see sparks, lights flicker or dim when appliances start, or a breaker trips or a fuse blows repeatedly: stop using it and call a licensed electrician. Fix that before any lighting plan.

NFPA's list of reasons to call a licensed electrician includes recurring blown fuses or tripping breakers, a tingle when touching an appliance, metal sink or plumbing fixture, discolored or warm outlets or switches, a burning or rubbery smell from an appliance, flickering lights, sparks from an outlet, and cracked or broken outlets. The Electrical Safety Foundation International's home check gives the distinction plainly: warm to the touch may be okay, but hot is not (ESFI, Indoor Electrical Safety Check). The Consumer Product Safety Commission's checklist notes that some dimmer switches may become warm in normal use (CPSC, Home Electrical Safety Checklist). A dimmer that runs slightly warm is not the same as a hot plate.

ESFI also lists reasons to consider a professional inspection even with no sign: a home 40 years old or older, a major addition, renovation or new major appliance in the last 10 years, or a new owner of a previously owned home. NFPA says to have the electrical system inspected when buying, selling or renovating, or when adding or changing wiring. Ask the authority For a house built before the mid-1980s, an inspection before a lighting project is one reasonable first step. It is the electrician's report, not this manual, that says what the wiring can take.

For context, NFPA's national figures put the average at 32,620 US home fires a year involving electrical distribution and lighting equipment, with 430 civilian deaths a year, over 2015 to 2019 (NFPA, Home Fires Caused by Electrical Distribution and Lighting Equipment, 2022). Wiring and related equipment accounted for 68 percent of those fires. These describe the national picture over those years, not the risk in any one home.

3. Renters and association owners

A renter does not alter wiring or fixtures they do not own. The landlord owns them and decides any change, so the request goes to the landlord in writing before anything is done. A written request gives both sides a record of what was asked and what was agreed. Ask the authority Leases differ, and this manual does not interpret one.

A useful request is short and specific:

  • What you want and where ("two plug-in LED lights under the kitchen cabinets, held with the adhesive strips that come with them").
  • Whether it involves wiring ("no wiring; they plug into the existing outlet").
  • What happens when you leave ("I will remove them and the adhesive without damage").
  • For anything that needs wiring, a question rather than a plan ("Would you consider adding a switch at the top of the stairs? I can describe what I measured").

Plug-in and battery lights are the renter's tools in the meantime. Most of this manual works without changing anything you do not own.

In a condominium, co-op or homeowners' association, the unit owner may own the fixtures but the association may have rules on electrical work, contractors, permits and work hours, and may own the wiring in shared walls and ceilings. Read the rules, or ask the association in writing, before booking an electrician, and note the answer in the brief's approval line.

4. Permits

A permit is the building department's permission for a piece of work, followed by an inspection that checks the finished work against the code your area has adopted. Who needs one, for what, and who may pull it differ from city to city. Ask the authority

Many cities draw a line between replacing a broken fixture, switch or outlet with a similar one in the same place, which some list as not needing a permit, and adding or moving fixtures or circuits, which usually does. Treat that as a pattern to check, not a rule: read your own building department's list of work that needs a permit and work that does not.

St. Louis, Missouri, is one labelled example of who may pull a permit. Its Building Division issues electrical permits to city-licensed electrical contractors. A homeowner may get one only by passing a short test from the Electrical Section, for an owner-occupied single-family home, and for an addition, repair or modification to an existing system; homeowners may not pull permits for service changes, rehab or new construction (City of St. Louis, Electrical Permits). That is St. Louis. Your building department sets the rules where you live.

The Federal Trade Commission lists a contractor asking you to get the required permits yourself among the warning signs of a home improvement scam (FTC, How To Avoid a Home Improvement Scam). If a quote says nothing about the permit, ask whether one is needed and who pulls it, and check the answer against your building department's page.

To find your own rules, search for your city or county name with "building department electrical permit", and look for the page that lists what work needs a permit and who may apply. Write down what it says, with the date, in the brief's notes.

5. Licenses, estimates and contracts

The FTC's checklist for hiring any contractor starts with license and insurance: consider only contractors who are licensed and insured, confirm the license with your state or county, and ask for proof of insurance. Convention A license check should confirm the license class, the kind of work the license covers, not only that a license exists.

California is a labelled example. Its Contractors State License Board has a separate electrical class, C-10, for contractors who place, install or connect electrical wires, fixtures and equipment (CSLB, C-10 Electrical Contractor). Its May 2025 pamphlet says anyone doing work of $1,000 or more in combined labor and materials must be licensed, any project that needs a permit requires a licensed contractor, and you can check a license number on the board's website or by phone (CSLB, What You Should Know Before Hiring a Contractor, May 2025). Older CSLB material gives $500; the May 2025 pamphlet gives $1,000. That is California. Your state or county licensing board sets the rules where you live.

Written estimates

The FTC says to get several written estimates, each describing the work, the materials, the completion date and the price; not to choose the lowest bid automatically; and to ask why estimates differ a lot. Convention An estimate that does not name the fixtures, housings and dimmer is hard to compare with one that does. The brief, below, is what makes estimates comparable.

The contract and payment

The FTC advises asking for a written contract even where the state does not require one, listing the contractor's name, address, phone and license number, estimated start and finish dates, and any spoken promises, with every blank filled in. If you sign it in your home or away from the seller's place of business, the FTC says you generally have three business days to cancel, and the contract should say so. It advises against paying in full up front, notes that some states cap down payments, and says not to make the final payment until you are satisfied. Ask the authority

California, again as a labelled example, requires a written contract for home improvement work over $500, limits the down payment to $1,000 or 10 percent of the price, whichever is less, and requires the contract to say who will obtain the permits (CSLB, Home Improvement Contracts). Cancellation rights, down-payment caps and contract rules vary by state.

Limits

Nothing in this chapter is legal or electrical advice. Licensing thresholds, permit rules, cancellation rights and down-payment caps vary by state and city; California and St. Louis appear only as labelled examples. Check your own building department and licensing board, and read your own lease or association rules. This manual does not recommend an electrician, a brand or a price.

Go deeper

The CSLB contract list as a model

California's contract page lists what a home improvement contract there must describe: the products, methods, sizes, colors and manufacturer model numbers, who does what, the materials, the completion date, who obtains permits, a payment schedule in which payments do not run ahead of the work done (apart from the down payment), and written change orders signed before any change. Outside California it is not a legal requirement, but it is a good checklist for any lighting contract: if a line is missing, ask for it.

California's Title 24 as a full example

Some places add energy rules to the electrical code. Roseville, California's 2025 handout summarizes the state's residential lighting rules (City of Roseville, 2025 Residential New Lighting Mandatory Measures). Among them: dimmers in kitchens, bedrooms, living rooms, offices and dining rooms; at least one light on a vacancy or occupancy sensor in bathrooms, laundry rooms and garages; under-cabinet lighting switched separately from ceiling lighting; recessed downlights in insulated ceilings certified for insulation contact and airtight; and forward-phase dimmers for LEDs that meet the NEMA SSL 7A standard. The installer gives a certificate of installation before final inspection. That is one state's code. It shows why the brief asks the electrician what applies where you live.

6. The one-page brief and the questions

The brief is one page that tells an electrician what you want each light to do and where you want to control it. It describes purposes and constraints; the electrician decides how it is wired. With the same brief in every electrician's hands, the quotes answer the same question. The brief sheet has these fields:

  • Home and who owns it; year built. The year hints at the wiring the electrician may find.
  • Rooms in scope, and what each light should do. "Light every stair tread from top to bottom without glare at the landing", not "two sconces".
  • Fixtures and bulbs chosen, with model numbers once picked, from your plan and trial.
  • Switch locations wanted. "Top and bottom of the stairs"; "by the bed".
  • Dimmers, and the bulbs they must work with. Name the bulbs, so the dimmer can be checked against their compatibility list.
  • Sensors and smart controls, and whether you want app or voice control.
  • Ceiling type and what is above (attic, insulation, another floor), and damp or wet areas (bathroom, over the sink).
  • Problems found in testing, with the readings: the tests sheet's numbers belong here.
  • Access and timing, and landlord or association approval where it applies.

The questions to ask

The questions sheet groups the questions; tick the groups that apply. Four topics need a little background.

  • Recessed lights in an insulated ceiling. Building America's code brief, from Pacific Northwest National Laboratory, says model codes require fixtures in direct contact with insulation to be IC-rated (rated for use in insulated ceilings), and recessed fixtures in the building envelope to be IC-rated and labeled airtight, leaking no more than 2.0 cubic feet of air a minute under a standard test (Building America, Recessed Lighting Code Compliance Brief). Ask whether the housings are IC-rated and airtight. Product-specific
  • Dimmers and LEDs. A Department of Energy report on dimming LEDs found that flicker, buzz, limited range and lights that glow when off often come from a mismatch between the LED's driver and the dimmer, not a defect in either (DOE, Dimming LEDs with Phase-Cut Dimmers). Ask which dimmer, and whether it is on the bulb or fixture maker's compatibility list (Switches, dimmers and evening light).
  • The neutral wire. Lutron explains that smart dimmers need constant power, which a neutral wire in the wall box supplies; without one, LEDs can glow faintly when off. It says neutrals are found mostly in homes built after the 1980s (Lutron, Why Do I Need a Neutral-Based Dimmer?). Only the electrician, opening the box, can say whether yours has one.
  • Damp and wet locations. A fixture maker's reprint of the electrical code and UL definitions explains that fixtures in wet locations must be marked for wet locations, and in damp locations for damp or wet (H.E. Williams, Dry, Wet and Damp Locations). Where a fixture may go near a tub, shower or sink is set by the code your area adopted; the electrician and inspector decide it (Kitchens, bathrooms and desks).

The rest are plain: who pulls the permit and whether the work will be inspected; the license number and class; proof of insurance; who patches and paints the openings; what cleanup is included; the warranty; the schedule; and the payment schedule.

Go deeper

IC and airtight ratings in detail

The Building America brief notes that "IC" refers to the UL thermal environment for fixtures installed in insulated ceilings, and that many people misread it as "insulation contact". Under the code sections it cites, a fixture not identified for insulation contact needs its recessed parts at least half an inch from combustible material, and insulation kept at least 3 inches from its housing and driver. Airtight ratings are an energy-code matter: the brief says up to half the leakage happens where the housing meets the ceiling, so it should be sealed with a gasket or caulk. These rest on 2015 model codes; your area may have adopted later ones. The electrician and inspector apply them.

7. Comparing quotes

Compare each quote against the brief, not against the other quotes. Put each one in a row of the quotes sheet and ask, line by line: does it cover every electrician row in the brief; does it name the fixtures or housings, and are they IC-rated and airtight where the ceiling is insulated; does it name the dimmer and say it suits your bulbs; does it say who pulls the permit; are the license number and class checked, and is insurance shown; are patching, cleanup, warranty, dates and the payment schedule written in?

Then mark "matches the brief" yes, partly or no. A quote that partly matches is a reason to ask, not to reject: a missing line may be an omission the electrician will fill. Price comes after the match. The FTC's advice not to choose the lowest bid automatically, and to ask why estimates differ, applies in both directions: a higher price may cover a permit or better housings, and a lower one may leave something out, or may not. Test it The written answers settle it.

Go deeper

Reading a quote line by line

Lay the brief beside the quote and number each brief line. Write the number next to the quote line that answers it. Brief lines with no number are gaps; quote lines with no number are additions to ask about. For a lighting quote, the lines that most often go missing are the permit, the housing rating, the dimmer model and the patching. Record the questions and answers in the questions sheet's answer column, and ask for a revised written quote rather than a spoken assurance.

8. After the work

Walk the finished work with the electrician, or on your own that evening, using the after-the-work checklist:

  • Every switch works from every location it should.
  • Each dimmer dims smoothly across its range with no buzz, and the lights go fully off.
  • The slow-motion video test from Survey and test your rooms at each dim level you use. The phone test can flag flicker; it cannot rule it out.
  • Fixtures carry the markings the brief asked for: damp or wet, IC and airtight.
  • Plates and fixtures are cool or, for a dimmer, at most slightly warm. A hot plate is a warning sign; call the electrician back.
  • The permit is closed and the inspection passed, where one was needed.
  • Compatibility lists, manuals and the invoice are filed in the binder.
  • A retest in the same spots with the same device as your first readings, in the tests sheet.

Bulbs in the new fixtures follow the same rules as any other: within the fixture's wattage label, and marked for enclosed fixtures where the fixture is enclosed. The CPSC's fallback for an unmarked fixture is 60 watts or less, or 25 watts for miniature bulbs.

9. See it: Tunde and Sam's three quotes See it

Fictional example

Tunde Adeyemi and Sam Clarke own a one-story ranch house built in 1958, with an insulated attic above the kitchen. Everything here, including the quotes, is invented for the example.

Known. Their general contractor's drawing shows eight 6-inch recessed downlights in a grid on one switch. They want under-cabinet lights, two pendants over the island and a dimmer for the dining end. Their brief says: kitchen 12 by 13 ft, 8 ft ceiling, insulated attic above; downlights IC-rated and airtight; under-cabinet lights on their own switch; a dimmer for the dining end from the downlight maker's compatibility list; pendant height from their cardboard mock-up; permit pulled by the electrician.

The quotes. Three licensed electricians, license numbers and classes checked with the state board and insurance shown, quoted in writing. Electrician A covers every fixture but has no permit line. Electrician B names non-IC housings for the insulated ceiling. Electrician C matches the brief: IC-rated airtight downlights, under-cabinet lights on their own switch, a dimmer from the downlight maker's list, and the permit pulled by the electrician. In the quotes sheet, A is "partly", B is "no", C is "yes".

What they did with it. They did not compare prices first. They asked A, in writing, whether the work needs a permit and who pulls it. They asked B whether IC-rated airtight housings were available for the insulated ceiling, and for a revised quote if so. Only revised quotes that match the brief go into the price comparison.

Open, and who settles each. Whether the permit is in the general contractor's scope or the electrician's: the contract. Which dimmer works with the chosen downlights: the downlight maker's compatibility list, checked by the electrician. Whether eight downlights are more than the room needs once under-cabinet light is added: potentially fewer, under the lumen calculator's assumptions; settled by the electrician's layout from the maker's spacing criterion and by the readings after the work.

10. Practice: sort the plan and write the brief Practice

Minimum: sort every row of the plan; if any row is "electrician", fill in the brief for it and find your building department's permit page. Time: 15 minutes to sort; about an hour more for a brief. Materials: your plan, tests and safety sheets, and an internet connection.

  1. Check the warning signs first. Open the safety sheet. If any warning-sign item is ticked, that call to an electrician comes before the plan.
  2. Sort the plan. In the layers sheet, set "who does it" on every row to me, landlord or electrician, using the table in who does what. If nothing is "electrician" or "landlord", stop here and go on to Your lighting plan.
  3. If you rent, write the request. One short message to the landlord for each landlord row. Note the date sent and the answer.
  4. Fill in the brief. In the brief sheet, describe what each electrician row should do, the switch locations, the bulbs any dimmer must work with, the ceiling, and the readings from your tests.
  5. Pick the questions. In the questions sheet, tick the groups that apply.
  6. Find the permit page. Find your building department's page on electrical permits and write down, with the date, what it says about who may pull one and what work needs one.
Go deeper
  1. Check a license. Before a walkthrough, look up the electrician's license number and class on your state or county board's site, and note the date in the quotes sheet.
  2. Compare quotes against the brief. Enter each written quote, mark the match, and write the questions for any gaps.

11. Your rooms Your rooms

12. Check your work Check your work

Criteria

  • Does every row of the plan say me, landlord or electrician?
  • If any row says electrician, is the brief filled in for it, with purposes and readings rather than product names alone?
  • Have you written down what your building department's page says about permits, with the date?
  • If you rent or have an association, is the written request sent, or the rules read, and the answer noted?
  • Is any warning sign on the safety sheet handled before the plan?

Worked example

Tunde and Sam's plan (fictional example) has the downlights, under-cabinet lights, pendants and dining dimmer marked "electrician", and the bulbs for the pendants marked "me". The brief covers all four electrician rows with purposes, the insulated ceiling and the dimmer's bulbs. They wrote down their building department's permit page. The criteria are met. Their quote comparison is still open: two of three quotes are waiting on written answers.

Marisol's plan (fictional example), on the smallest path, has every row marked "me": bulbs and lamps in a rented living room. The one question for her landlord, plug-in under-cabinet lights stuck on with adhesive in the kitchen, went in writing; the landlord said yes, if removed without damage. Nothing is in the electrician column, so she is done with this chapter at the sorting step.

Common mistakes

  • Writing products instead of purposes. "Two sconces" invites a sconce quote; "light every tread without glare" invites a solution.
  • Comparing prices before the match. A quote without the permit or with the wrong housings is not comparable yet.
  • Accepting "you can pull the permit". The FTC lists it as a red flag.
  • Checking that a license exists, not its class. Ask what work it covers.
  • Skipping the after check. A dimmer that buzzes or flickers is easier to fix before the electrician leaves.

What is still unresolved

This chapter cannot tell you whether your work needs a permit, who may pull it, what your license board requires, or what your lease or association allows; your building department, licensing board, landlord and association do. It cannot say what your wiring can take or whether a box has a neutral; the electrician does. Your lighting plan orders the work so the electrician comes once, after the bulbs and lamps are tried.

13. Knowledge check and scenario

Which of these is electrician work in this manual: a smart bulb, a plug-in nightlight, a wall dimmer, a new lamp?
The wall dimmer. It sits behind a cover plate and must suit the bulbs. The other three screw or plug in.
A switch plate is hot to the touch. What do you do?
Stop using it and call a licensed electrician. ESFI's line is that warm may be okay but hot is not; the CPSC notes that some dimmers run warm in normal use, which is different from a hot plate.
Why compare quotes against the brief rather than against each other?
Because the brief says what the work must include. Two quotes can differ because one leaves out the permit or names the wrong housings. Match first, then price, and ask why prices differ, as the FTC advises.
What does NFPA's figure of 32,620 home fires a year tell you about your house?
Little about your house. It is a national annual average for 2015 to 2019, published in 2022, for fires involving electrical distribution and lighting equipment. It is context for why electrical work goes to a licensed electrician, not a measure of any one home's risk.
(Go deeper) What does "IC-rated" mean, and why does it matter for recessed lights?
Rated for the thermal conditions of an insulated ceiling. The Building America brief says codes require fixtures in contact with insulation to be IC-rated, and recessed fixtures in the building envelope to be IC-rated and airtight. A non-IC housing needs insulation kept away from it.
You own a 1985 house and want a smart dimmer for the bedroom ceiling light. An electrician's quote says "install smart dimmer, $X" and nothing else. What do you do?
A one-line quote leaves nothing to check against the brief. A dimmer that does not suit the bulbs can flicker, buzz or glow when off, and a smart dimmer may need a neutral wire the box may not have.
These are the brief's questions. The answers make the quote comparable and catch the two most common problems with smart dimmers: compatibility and the neutral. The permit answer depends on your building department.
This puts electrician work in the hands of someone without a license or a permit, which NFPA's consumer message advises against. A plug-in smart lamp or smart bulbs are the no-wiring alternative while you get quotes.

Checklist

Records your learning only; it is not a qualification.