Builder Markup vs. Margin: What's Standard and How to Calculate It
Builder markup is the percentage a builder adds to the cost of a job to arrive at the selling price, and it commonly lands somewhere between 15% and 25% on custom homes, depending on the market and the builder. Margin is the same profit measured as a percentage of the selling price instead of the cost, so it’s always the smaller number. A 20% markup is a 16.7% margin, not a 20% one. Confusing the two is one of the most common and most expensive math errors in this business.
Plenty of builders say they “make 20%” and can’t tell you whether that’s markup or margin. The difference on a million-dollar house is tens of thousands of dollars. It’s worth ten minutes to get straight.
Builders markup vs margin: what’s the difference?
Both describe the gap between what a job costs you and what you sell it for. They just divide that gap by different numbers.
Markup = (price − cost) ÷ cost
Margin = (price − cost) ÷ price
Take a hypothetical house with a direct cost of $800,000, sold for $960,000. The gap is $160,000.
Markup: $160,000 ÷ $800,000 = 20%
Margin: $160,000 ÷ $960,000 = 16.7%
Same house, same dollars, two different percentages. Markup is how you build a price. Margin is how you read a financial statement. You need both, and you need to know which one you’re looking at.
How do you convert builder markup to margin?
Use these two formulas, with the percentages written as decimals:
Margin = markup ÷ (1 + markup)
Markup = margin ÷ (1 − margin)
Worked example, markup to margin. With a 20% markup:
Write 20% as 0.20.
Add 1 to get 1.20.
Divide 0.20 by 1.20 to get 0.167.
Your margin is 16.7%.
Worked example, margin to markup. Say you need a 20% gross margin to cover overhead and leave a profit:
Write 20% as 0.20.
Subtract from 1 to get 0.80.
Divide 0.20 by 0.80 to get 0.25.
You need a 25% markup.
On an $800,000 cost, that’s the difference between pricing the house at $960,000 and pricing it at $1,000,000. The builder who wanted a 20% margin and applied a 20% markup just left $40,000 on the table and won’t find out until the year-end financials.
A few common conversions worth memorizing:
10% markup is a 9.1% margin
15% markup is a 13.0% margin
20% markup is a 16.7% margin
25% markup is a 20.0% margin
30% markup is a 23.1% margin
33.3% markup is a 25.0% margin
What is the standard builders markup?
There isn’t a single standard, but the average builder markup you’ll hear quoted for custom homes commonly falls somewhere between 15% and 25% of cost. It varies by market, by the size and complexity of the job, and by what the builder includes in “cost.”
That last part makes comparisons almost meaningless. One builder marks up 15% but bills supervision, project management, and insurance as job costs. Another marks up 22% and covers all of that out of the markup. They may end up in nearly the same place.
So don’t copy a number. Build your own:
Add up your annual overhead. Office, salaries not billed to jobs, insurance, vehicles, software, marketing, your own pay.
Estimate your annual revenue. Realistically, based on the jobs you can actually complete.
Divide overhead by revenue. That’s the margin you need just to break even.
Add your target net profit as a percentage of revenue.
Convert that total margin to a markup with the formula above.
Say overhead runs 10% of revenue and you want 8% net. You need an 18% gross margin, which converts to a markup of about 22%. That’s your number, and it came from your business instead of someone else’s.
How does builder markup on materials work?
Builder markup on materials is usually the same percentage the builder applies to everything else. Most builders mark up the total cost of the job, labor, trades, and materials alike, at one rate.
Clients sometimes push back on this one. They can see the price of a faucet online and wonder why yours is higher. The markup on materials pays for selecting, ordering, receiving, storing, fixing what arrives broken, and warrantying the thing after it’s installed. That’s also why I’m cautious about client-supplied materials. When the client buys the faucet, you lose the markup and keep most of the headaches. If you allow it, your contract should say who’s responsible when it shows up wrong or fails.
What is the builder markup on a home?
The builder markup on a home is the markup applied to the full cost of construction, and how visible it is depends on the contract.
Fixed price. The markup is built into the price. The client sees one number.
Cost plus. The markup is the stated fee, shown openly on top of actual costs.
Spec homes. There’s no markup in the contract sense. The market sets the price, and your margin is whatever is left after land, construction, financing, and selling costs.
More on the first two in cost-plus vs. fixed-price.
How do you make sure your markup turns into real margin?
Markup is applied to estimated cost. Margin is earned on actual cost. Everything that goes wrong between the two comes out of your pocket.
Estimate completely. A missing line item is a 100% discount on that item.
Write tight specs. Vague scope gets filled in at your expense.
Mark up your change orders. At the same rate or better. See change order markup.
Compare budget to actual on every job. It’s the only way to learn where your estimates are soft.
The first two are budgeting problems, and our Budget and Specifications Template is built to solve them. For where margins tend to land once the dust settles, see home builder profit margin.
Frequently asked questions
Is a 20% markup the same as a 20% margin?
No. A 20% markup on cost produces a 16.7% margin on price. To earn a 20% margin, you need a 25% markup.
What is the average builder markup on a custom home?
It varies by market and builder, but markups commonly land somewhere between 15% and 25% of cost. What each builder counts as cost makes direct comparisons unreliable.
Do builders mark up subcontractors?
Yes. Most builders apply their markup to the entire job cost, including subcontractor bids, since managing and warrantying that work is the builder’s job.
Should I price my jobs using markup or margin?
Set your target as a margin, because that’s how your financial statements measure profit, then convert it to a markup to price the job.
BTW, if you want your markup applied to a cost number you can actually trust, grab our Budget and Specifications Template over at the Building Optimal Shop, where you can check out the rest of our swag to build a better business. Proceeds go to benefit, Exponencialistas, my non-profit investing in entrepreneurs transforming their communities in Latin America.