A hall coat closet opened to bare studs for a conversion, with a white drain pipe and red and blue supply lines between the studs, a stack of drywall sheets against the wall, an orange bucket and a utility knife on a plywood floor, and a drop cloth over the hallway carpet.

General contractor fee in 2026: what $1,039 of a powder room bid buys

ByThe Homeowner Files

What a 20 percent contractor’s fee pays for on a small job, and what to ask about it on your own quote.

Every guest who needs the bathroom has to climb the stairs, while the coat closet off your front hall sits packed with coats and a vacuum. A contractor can turn that closet into a powder room, and on the sample bid we built from published prices, the job comes to $6,235. One item on it is something you never shop for and nobody installs: the general contractor’s fee, $1,039. Every number here traces to public sources, mostly the cost guides HomeGuide and HomeAdvisor.

The short version

  • The powder room costs $6,235 on our sample bid. The contractor’s fee is $1,039 of it, about one dollar in every six.
  • The fee pays for three things: the work before the first day, booking the trades in the right order, and promising you a fixed price.
  • If your contractor’s books look like the average remodeler’s, about $820 of the fee runs the business and $219 is profit.
  • Tonight, find the fee on any quote you have, or find out whether it’s tucked inside each trade’s price.

The setup

Your coat closet is 5 feet by 5 feet, and its walls and door are already there. A powder room, or half bath, is just a toilet and a sink, and 5 by 5 feet is listed as the smallest half bath that meets the accessibility guidelines.5

An empty hall closet 5 by 5 feet, with a bare shelf, a clothes rod and a door standing open onto a hallway.
The closet cleared out for the job, with its walls and door already in place.

Turning a closet into a bathroom costs less than building on, because the walls are already up. Making a bathroom out of space you already have can save close to half compared with an addition.6 One thing comes with it, though: most building codes call for an exhaust fan in a toilet room, and some accept a window that opens instead.5 Your closet has no window, so you get a fan.

You want the plain version: a standard toilet, a small vanity with its sink and faucet, and a vinyl plank floor. Behind the walls, the plumber brings new water and drain pipes over from the nearest ones in the house, and the electrician adds an outlet and a fan that vents through the roof. The city issues the permit and sends an inspector. That’s several trades, so you hire one general contractor to run them all for a fixed price, a total agreed before work starts.

The bid, item by item

The chart shows the whole sample bid, biggest cost first. If you want every number, open the table under it.

Bar chart of the eight items of the powder room bid, largest first, from electrical and fan down to the floor, with each item's share of the bid and the five Backstage Costs in rust.
The eight items of the bid, largest first, with each item's share, rounded to total 100 percent. The rust bars are The Backstage Costs.
See every number behind the bars (the full table)
Item Low Typical High Materials Labor and fees Share
1. Toilet, standard two-piece, installed $250 $600 $950 $300 $300 9%
2. Vanity, 30-inch, with top, sink and faucet $200 $450 $700 $300 $150 7%
3. Floor, 25 sq ft of luxury vinyl plank $100 $250 $400 $150 $100 4%
4. Walls patched and painted $650 $925 $1,200 $370 $555 15%
5. Plumbing: new supply and drain lines $450 $1,125 $1,800 $337 $788 18%
6. Electrical and fan: GFCI outlet, exhaust fan, roof duct $741 $1,296 $1,863 $236 $1,060 21%
7. Permit $100 $550 $1,000 none $550 9%
8. General contractor fee, 20 percent of items 1 to 7 $498 $1,039 $1,583 none $1,039 17%
Total $2,989 $6,235 $9,496 $1,693 $4,542 100%

Built from published price ranges. The fee is 20 percent of items 1 to 7, shares are rounded to add to 100 percent, and the math is under “How we built the bid”.

You pick three of these: the toilet, the vanity and the floor, $1,300 together. The other five are what we call The Backstage Costs, the work you don’t shop for but still pay for: the walls, the plumbing, the electrical work, the permit and the fee. On this bid they come to $4,935, almost four dollars in every five.

Three items could easily move. The plumbing costs more the farther your closet sits from the nearest pipes,6 and on a job this small, the floor installer, the drywall patcher and the painter may each charge a minimum instead of pricing the work by size.9, 10, 11

Is 20 percent a normal fee?

It’s the top of the usual range. Two big cost guides put a general contractor’s fee at 10 to 20 percent of the project,1, 2 and we use 20 percent on every bid so our bids compare fairly. On your powder room, 20 percent of what the trades charge comes to $1,039, about one dollar in six of the whole bid.

You may also see 20 to 30 percent quoted. Part of the difference is what the percentage is taken of, and there’s no industry standard for figuring it.3 A contractor who adds 25 percent to their own costs ends up with 20 percent of your final price,3 because the same dollars are a smaller share of a bigger number. So when a contractor names a percentage, ask what it’s a percentage of.

The fee may not show up as its own item at all. Many contractors show only final prices on an estimate,3 with the fee built into each trade’s number.1 Your first job is finding out which kind of quote you have.

What does the contractor do before work starts?

Before anyone picks up a tool, the contractor prices the job, gets the permit and carries the insurance a contractor needs.1 On this bid, all of that comes out of the $1,039, and none of it shows in the finished room.

The permit comes first, because moving pipes nearly always needs one.17 The permit itself costs $550, a separate item from the fee. Getting it is the contractor’s job.

The choice here is whether to pay for planning up front. Some contractors charge a separate fee for planning before construction starts,1 so ask whether yours does, and whether it comes off the total if you sign. Then ask: “Is the permit inside your fee or billed separately, and who is here when the inspector comes?”

Who books the plumber and the electrician?

The contractor does, and the plumber is the first trade in. The plumber runs the new pipes inside the open walls, and an inspector checks that work before the walls are closed up.14 The electrician works in the same open walls. After that come the patching, the paint, the floor, the toilet and the vanity.

The open wall of a small closet, with a new white drain pipe and red and blue supply pipes running between the studs to copper stub-outs near the floor, lit by a clamp work light.
New plumbing pipes in the open wall, waiting for the inspector.

Setting that schedule is the second thing the fee pays for, along with hiring and paying each trade and buying the materials.2

Here’s the decision: buy that job, or do it yourself. Book the trades on your own and you skip the fee, so the bid drops to $5,196. Or hire a construction manager, who helps run the job for a set fee,1 while you deal with each trade yourself. A manager charges about half a general contractor’s fee,2 about $520 here. The catch is that with a manager, the problems that come up are yours to handle, including poor work and trades who don’t show.2

Try this on the contractor: “Which trades do you book, and what happens to the schedule if one cancels?”

What happens if the price runs over?

With a fixed price, the contractor covers it. If one part of the job costs more than planned, the contractor has to make it up somewhere else and keep to the budget.1 That’s the third thing the fee pays for: you know the price before work starts.

The other main kind of contract is called cost-plus. You pay what the work actually costs, plus a percentage on top for the contractor.2 It’s the more common of the two,2 but it favors the contractor,1 because if the job runs over, the fee grows with it.

Get this in writing before you sign: “Is this a fixed price, and what do you charge for a change?” Ask what warranty you get after the last day, too.1

How much of the fee is profit?

About a fifth, if your contractor’s books look like the average remodeler’s. The National Association of Home Builders surveys what remodeling companies keep after paying for their jobs.4 In its 2026 study, about four fifths of that went to running the company and about a fifth was profit. On your $1,039 fee, that’s about $820 for running the business and $219 of profit (the math is in “How we built the bid”).

Two bars splitting the $1,039 fee into about $820 for running the company and about $219 of profit.
The fee split by NAHB's ratio of overhead to profit.

Running the company covers the owner’s own pay, the office, sales and marketing, the cost of borrowing, and job costs that can’t be pinned on any one job.4 The fee also covers the contractor’s insurance and taxes.1 So the profit is what’s left after the company’s own costs are paid.

Ask: “Is your fee a percentage of the trades or of the whole contract, and does it apply to the permit?”

The three things you pick, and the catch in each

You shop for three things on this bid, and together they come to $1,300.

Toilet, $600. Half is the toilet and half is the plumber’s time.7 This bid uses a two-piece toilet. A one-piece, with the tank and bowl made as one, can cost more.7

Vanity, $450. The vanity itself is $300, and putting it in is $150.8 Most vanities come with the sink and faucet, so check that yours does, because buying them separately can cost more than the whole vanity.8

Floor, $250. Vinyl plank is priced by the square foot, and 25 square feet is a tiny floor. Flooring installers may charge a minimum for a small job,9 so on a floor this size, the minimum may set the price. Ask: “Does your floor price already include the installer’s minimum?”

Three ways to run the same powder room

What you pay depends on how much of the managing you buy. Book the trades yourself and it’s $5,196. Add a construction manager and it’s $5,716. Hire one general contractor and it’s $6,235.

Three bars showing the same powder room priced three ways: booking the trades yourself, with a construction manager, and with one general contractor, with the contractor's version the longest.
Three ways to manage the same powder room.

With the first price, the booking, the permit and the schedule are all yours, and so is the time they take. The gap between the first price and the last price is the $1,039 fee: what you pay so you don’t have to make the calls yourself.

Whichever way you go, set aside at least a tenth of the price for surprises,6 $624 on the full bid.

The finished room

When it’s done, the closet door opens on a small white room with a toilet, a vanity and a floor that wipes clean. The fan clears the air through the roof, and the next guest who needs the bathroom stays downstairs. The plumber, the electrician and the painter came and went in the right order, and the inspector signed off before the walls closed. Getting that order right is part of what the $1,039 bought, and like the permit and the pipes inside the walls, none of it shows in the room.

What to do tonight

Tonight, pull out any contractor quote you have and look for the fee. It may be its own item with a percentage, a flat amount, or nowhere at all, which can mean it’s built into each trade’s price. Tomorrow, ask the contractor which it is, what it covers and whether the price is fixed. If you want a one-page sheet for comparing three bids side by side, drop your email here.

How we built the bid

Items 1 to 7 use the guides’ national installed rates at their midpoint or average.

  • Toilet, $600. HomeGuide’s two-piece toilet at $100 to $500 for the unit and $150 to $450 for labor, midpoints $300 and $300. A one-piece runs $200 to $900 for the unit.7
  • Vanity, $450. HomeGuide’s 2.5-foot premade single vanity: $100 to $500 for the unit, midpoint $300, plus $100 to $200 of labor, midpoint $150. A separate sink and faucet adds $600 to $2,000.8
  • Floor, $250. 25 square feet of luxury vinyl plank at HomeGuide’s midpoints: $6 a square foot for materials plus $4 for labor and job supplies, from $2 to $10 and $2 to $6.9
  • Walls patched and painted, $925. HomeGuide’s $500 to $800 to repair a larger hole, midpoint $650,10 plus its $150 to $400 for the walls of a small bathroom, midpoint $275.11 HomeGuide puts labor at 50 to 70 percent or more of a drywall repair bill.10 We used 60 percent, the middle, for the whole item, which is $555 of labor and $370 of materials.
  • Plumbing, $1,125. HomeGuide’s $450 to $1,800 for rough-in plumbing in a new bathroom, midpoint $1,125.6 HomeAdvisor puts labor at about 70 percent of the cost of repiping a house, the nearest published share for pipe work, so $788 is labor and $337 is materials.12 Two other guides price a bath much higher,13, 14 so this is the item most likely to move.
  • Electrical and fan, $1,296. A GFCI outlet at $250, the middle of HomeGuide’s $150 to $350,15 plus HomeAdvisor’s $396 average for installing a fan and $650 for a roof vent, the middle of $350 to $950.16 Unit prices set the materials at $236: $26 for the outlet and $210 for a fan, the middles of $12 to $40 and $20 to $400.15, 16 The rest, including the duct, counts as labor and fees. HomeGuide’s all-in $250 to $950 for a fan with its venting6 is below this bid’s $1,046 for the fan and roof vent, so this item may run high.
  • Permit, $550. The middle of HomeAdvisor’s $100 to $1,000.17
  • Contractor fee, $1,039. 20 percent of the $5,196 of trades, the top of the 10 to 20 percent HomeGuide and HomeAdvisor give.1, 2 HomeGuide gives that range for large projects and a fixed, daily or hourly rate for small jobs;1 we use 20 percent on every bid so bids stay comparable. The markup on individual labor and materials ranges from 8 to 45 percent.1 Angi’s contractor guide says there’s no industry standard and gives 15 to 20 percent of cost in one place and 20 to 30 percent in another; its table shows a 25 percent markup on cost making 20 percent of the price.3 A markup becomes a share of the price when divided by one plus itself, so 20 to 30 percent of cost is 16.7 to 23.1 percent of the price. This bid’s fee is 16.7 percent of the whole $6,235.
  • Planning and insurance. Some contractors charge $150 to $1,000 or more for pre-construction planning.1 HomeGuide lists four kinds of insurance a contractor carries: liability, builders’ risk, workers’ compensation and pollution coverage.1 HomeAdvisor’s list of services adds any HOA approval.2
  • Profit split. From NAHB’s 2026 Remodelers’ Cost of Doing Business study, covering 2024: operating expenses took 23.6 percent of revenue and net profit was 6.3 percent, inside a 29.9 percent gross margin.4 Operating expenses are owner’s compensation, indirect construction costs, finance, sales and marketing, and general and administrative costs. Our arithmetic: $1,039 times 23.6 over 29.9 is $820, and times 6.3 over 29.9 is $219.
  • Construction manager, $520, and contingency. The manager costs about half of the $1,039 fee,2 inside HomeGuide’s 5 to 15 percent of the project cost, $260 to $779 on the $5,196 of trades.1 With the manager, the bid is $5,716. All three ways assume each trade charges you the same price it would charge a general contractor. Set aside 10 to 20 percent of the $6,235 total for surprises, $624 to $1,247.6
  • Size and the whole job. A half bath runs 15 to 32 square feet.5 The $6,235 bid works out to $249 a square foot, inside HomeGuide’s $200 to $300 for converting a closet or hall space, and its $5,000 to $7,500 for a 25 square foot conversion.5 Converting existing space costs nearly 50 percent less than an addition.6 Labor and fees are $4,542 of the bid, including the fee and the permit.

Sources

  1. HomeGuide, “2026 General Contractor Charges, Hourly Rates & Fee Percentage” (2023-09-05). https://homeguide.com/costs/general-contractor-cost – retrieved 2026-10-24.
  2. HomeAdvisor, “How Much Is a General Contractor’s Hourly Rate in 2026?” (2026-06-20). https://www.homeadvisor.com/cost/additions-and-remodels/general-contractor-rates/ – retrieved 2026-10-24.
  3. Angi, “General Contractor Markup Guide: Everything You Need to Know” (2026-06-13). https://www.angi.com/articles/general-contractor-markup.htm – retrieved 2026-10-24.
  4. NAHB (Eye on Housing), “Remodelers Saw Profit Margin Gains in 2024 (2026 Remodelers’ Cost of Doing Business Study)” (2026-04-08). https://eyeonhousing.org/2026/04/remodelers-saw-profit-margin-gains-in-2024/ – retrieved 2026-10-24.
  5. HomeGuide, “How Much Does it Cost to Add a Half Bathroom? (2026)” (2025-08-05). https://homeguide.com/costs/how-much-does-it-cost-to-add-a-half-bathroom – retrieved 2026-10-24.
  6. HomeGuide, “How Much Does It Cost to Add a Bathroom? (2026)” (2025-10-22). https://homeguide.com/costs/cost-to-add-a-bathroom – retrieved 2026-10-24.
  7. HomeGuide, “How Much Does Toilet Installation Cost? (2026)” (2025-09-22). https://homeguide.com/costs/toilet-installation-cost – retrieved 2026-10-24.
  8. HomeGuide, “How Much Does Bathroom Vanity Installation Cost? (2026)” (2025-06-03). https://homeguide.com/costs/bathroom-vanity-installation-cost – retrieved 2026-10-24.
  9. HomeGuide, “How Much Does Luxury Vinyl Plank (LVP) Flooring Cost? [2026]” (2025-06-03). https://homeguide.com/costs/luxury-vinyl-flooring-cost – retrieved 2026-10-24.
  10. HomeGuide, “How Much Does Drywall Repair Cost? (2026)” (2025-10-20). https://homeguide.com/costs/drywall-repair-cost – retrieved 2026-10-24.
  11. HomeGuide, “How Much Does It Cost to Paint a Room? (2026)” (2026-02-06). https://homeguide.com/costs/cost-to-paint-a-room – retrieved 2026-10-24.
  12. HomeAdvisor, “How Much Does It Cost to Repipe a House in 2025?” (2026-06-17). https://www.homeadvisor.com/cost/plumbing/install-new-plumbing-pipes/ – retrieved 2026-10-24.
  13. HomeGuide, “How Much Does It Cost to Install or Replace Plumbing? (2026)” (2025-08-29). https://homeguide.com/costs/install-new-house-plumbing-pipes-cost – retrieved 2026-10-24.
  14. Angi, “How Much Will Rough-In Plumbing Cost for My Bathroom? [2026 Data]” (2026-09-22). https://www.angi.com/articles/what-does-it-cost-run-new-plumbing-toilet-shower-and-sink-room-adjacent-other-bathroom.htm – retrieved 2026-10-24.
  15. HomeGuide, “How Much Does It Cost to Install or Replace a GFCI Outlet? (2026)” (2025-08-29). https://homeguide.com/costs/gfci-outlet-cost – retrieved 2026-10-24.
  16. HomeAdvisor, “How Much Does It Cost to Install a Bathroom Fan in 2026?” (2026-06-20). https://www.homeadvisor.com/cost/bathrooms/install-a-bath-fan/ – retrieved 2026-10-24.
  17. HomeAdvisor, “How Much Does a Bathroom Remodel Cost in 2025?” (2026-06-17). https://www.homeadvisor.com/cost/bathrooms/remodel-a-bathroom/ – retrieved 2026-10-24.

About this article

How this article was made: The Homeowner Files uses AI tools to help research, draft and illustrate articles. Every cost figure traces to a public source listed under Sources, and a person reviews and approves each article before it publishes.

All content on The Homeowner Files reflects general industry knowledge and publicly available data. It is not construction, legal, financial, or professional advice. Consult licensed professionals for your specific project. None of it reflects the views, positions, or confidential information of any employer.

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