How drywall contractors make more money

The margin math most drywall subs get wrong

Walk into any drywall shop that is quietly running 8% net and ask the owner what margin they bid. Most will tell you 20%. They are not lying. They are confusing markup with margin, and the two are not the same number.

If your cost is $100,000 and you add 20% markup, you bid $120,000. Your profit is $20,000 on $120,000 in revenue. That is 16.67% margin — not 20%. The difference shows up on every job and at year-end it is the reason the 20% guy finds out he was really an 8–12% guy.

If you want a 20% gross margin on a job, you mark up cost by 25%, not 20%. A shop that learns that one thing and nothing else will add 3–4 points of net margin in twelve months.

Burden, G&A, and profit are three separate buckets

The other common mistake is treating "profit" as a single number piled on top of the estimate. A healthy drywall P&L separates three things:

• Labor burden (on top of base wage): payroll taxes, workers' comp, liability, health, 401(k), vacation, training, small tools. For a commercial drywall hanger at $38/hour base, fully burdened is usually $52–$61/hour depending on the state. In California or New York it can touch $70. If you are carrying $45/hour loaded, you are already bleeding before anyone picks up a sheet.
• G&A overhead: rent, yard, estimating, PM salaries, insurance you cannot assign to a job, truck payments, software, accounting. Most $3M–$15M drywall shops run 8–12% G&A against revenue. Know your number and bake it into every bid.
• Net profit: what you want to take home before tax. 8% is average. 12–15% is good. 18–22% is what shops that have the plays in this guide dialed in actually run on commercial TI.

"My old foreman used to say the burden is the quiet killer. You feel the steel price, you feel the mud price, but the burden is the one that eats you and you never see it leave the plate."

Ray Ochoa, owner, 22-year drywall contractor, Phoenix

The seven money leaks

These are the leaks that show up on nearly every drywall P&L we have reviewed. The dollar figures below are for a representative 10,000 SF commercial TI at Level 4 finish with metal stud partitions and standard ceiling height. Scale up or down as your jobs dictate.

1. Un-priced change orders — the biggest one

The GC calls the foreman and asks him to "just wrap this one soffit real quick, we'll paperwork it later." Three weeks later the job is closed out and there is no ticket, no T&M sheet, no signed directive. You ate it. Drywall subs routinely give away 2–4% of contract value in un-papered field changes.

Leak on a 10,000 SF TI (contract ~$180K): $3,600–$7,200 per job, and it is all margin, not cost.

2. Rework from bad tape-coat readiness

Finisher hits a joint that was not properly set, the tape bubbles, sand it down, re-tape, re-coat. Or the hangers left a 3/8" gap on a butt joint and now the finisher is building a 14-inch-wide mud plain to hide it. Every inch of that is unbilled labor.

Industry data puts rework at 3–7% of drywall labor. On a 10,000 SF job with ~480 labor hours, that is 14–34 hours at a loaded $58/hr — $810–$1,970 gone.

3. Equipment standby — lifts, scaffolding, stilts

Scissor lift rental is $285–$420/week for a 19-ft electric. Scaffolding for a high atrium can run $1,400–$3,000/week. The lift sitting idle on a Saturday because the GC shut the job down for a cert-of-occupancy walk is still billing you. Track standby, add a 10% standby allowance on your equipment line, or negotiate a pickup-at-notice clause with your rental house (United, Sunbelt, Herc will all do it if you ask).

Leak: $600–$1,800 per 10,000 SF job in un-budgeted standby.

4. Hot mud vs ready-mix waste

USG Easy Sand 20 and 45 are cheaper per pound than ready-mix all-purpose but have to be mixed and used inside a tight window. Finishers who mix a full bag at 9am and get pulled to a different room lose 30% of that bag to setup. A shop running tight should never have a loose bag of 20-minute hot mud sitting in a bucket after lunch. Ready-mix (USG All Purpose, ProForm Lite, CertainTeed ProRoc) wastes less because it does not harden, but costs 15–25% more per LF of joint.

Leak: $200–$500 on a 10,000 SF job from mixed hot mud that sets up in the bucket.

5. Winter thermal blankets and temporary heat

USG and most major mud manufacturers will not warranty compound applied below 55°F. If the building is not conditioned, you are the one paying for propane salamanders, Bullet heaters, or the GC's temp-heat charge-back. On a cold shell in Minneapolis or Chicago, that is $1,500–$4,000 per month of heat you did not bid. Either get the heat cost in writing from the GC or include a temp-heat allowance line that says "by others."

6. Punch list over-run

A clean Level 4 job should close with a punch of under 40 hours for every 10,000 SF. A sloppy one punches out at 120+. That delta — 80 hours at $58 loaded — is $4,640 straight off the bottom line. Punch quality is upstream of punch cost: the hangers and tapers in weeks 1–3 decide what the punch looks like in week 9.

7. Retention that never gets collected

Ten percent retention on a $180K contract is $18,000. Most subs eventually get 80–90% of retention back, but a meaningful slice — often 10–20% — gets chewed up in back-charges, "final clean" disputes, or simply drops off because nobody on your side is tracking it. Un-collected retention is the most expensive kind of AR because it is all profit. $1,800–$3,600 per 10,000 SF job can walk off the books this way.

Selling the upgrade: how to turn Level 3 scope into Level 4 or 5 revenue

Architects write specs. Specs have gaps. The most profitable gap for a drywall sub is the finish level call-out. GA-214 defines Levels 0 through 5, but a spec that says "paint-ready finish" or "Level 4 standard" without attaching it to a paint gloss or lighting condition is an opening, not a scope.

Where the spec-writer's gap usually sits

• Spec calls for Level 4 "throughout" but the finish schedule shows semigloss paint at the corridors. Semigloss and gloss magnify every Level 4 pore. GA-214 explicitly recommends Level 5 for those conditions.
• Big lobby with clerestory or north-facing windows. Raking light kills Level 4. That is a Level 5 condition whether the spec says so or not.
• The ceiling is shown as painted gypsum, 20-plus feet long, suspended. GA-216 recommends Level 5 on any surface receiving gloss or subject to severe lighting, and suspended ceilings are prime photographing candidates.

The RFI response script that pays

When you spot the gap, the move is a pre-bid RFI or an assumption letter attached to your proposal. Script it plainly:

"Per GA-214, surfaces receiving gloss, semigloss, or enamel paint, or subject to critical lighting such as clerestories, atriums, or wall-wash fixtures, require Level 5 finish. The finish schedule (sheets A-601 and A-603) shows semigloss paint at corridors 100, 102, and 115 and wall-wash at the lobby. Our base bid assumes Level 4 throughout. If Level 5 is required at these areas (approx. 2,140 SF of wall), add $6,420 to the base bid, or issue clarification in an addendum."

Sample pre-bid RFI — keep it boring, cite the standard, quantify the add

Two things happen. Either the GC picks up the Level 5 as an add (you just sold $6K of the highest-margin finishing work in the trade, at roughly 30–35% gross). Or the architect issues an addendum clarifying Level 4 is acceptable, and you have a written record that protects you if the owner later complains about photographing. Either way, you win.

Crew velocity plays

Labor is 62–72% of a drywall bid. Even a 6% velocity gain on the labor bucket is more net margin than almost any purchasing play you could run. Here are the ones with the best ROI.

Prefab framing in the shop

Most residential-style drywall subs do not think of themselves as shop fabricators. On repeatable commercial TI — hotel rooms, multifamily, medical suites — they should. Building header boxes, door frames, and return walls in a jig on sawhorses at the shop cuts field hours 18–25% on those assemblies. One fabricator at $36/hr base can feed two field crews on a 60-room hotel remodel.

Two-man hanging teams vs three

Old-school crews run three hangers: one on the lift, one feeding sheets, one screwing off. On 9-foot walls with standard 4x12 sheets, a trained two-man team with a lift rack and a Pearl EZ-Lift can do 90% of the work at 75% of the labor cost. The swing variable is sheet size — 4x12 in two-man is fast; 4x12 in three-man is fighting each other.

Switching to automatic taping — the bazooka ROI

A TapeTech, Columbia World-Class, or DEWALT FlatMaster bazooka system (auto-taper, flat boxes, angle boxes, heads) runs about $6,500–$9,500 fully kitted. Consumables add $0.008–$0.012 per LF in premium mud and tape. Here is the math on a shop doing 400,000 SF of Level 4 per year:

On 400,000 SF/year of Level 4 wall — roughly 600,000 LF of joint — going from hand to full auto saves somewhere between $108,000 and $204,000 in labor per year. The tools pay for themselves in 3–6 weeks on any shop doing more than $2M in volume. The catch: you need a finisher who already tapes clean by hand. The bazooka amplifies skill; it does not create it.

The pricing mental model — three prices, not one

Every bid has three prices in it, whether you write them down or not. Writing them down turns guesswork into a decision.

• Walk-away price: the number below which you will not take the job even if it is the only bid on the street. This is cost + burden + G&A + 3% net, not one dollar lower. If the bid lands below walk-away, you are paying to work.
• Floor price: walk-away + 5–6 points of net. This is the price you will hold in a price-only negotiation with a GC you have worked with before.
• Target price: floor + 6–10 points. This is what you actually bid on a competitive job where you have good reason to think you have an edge (relationship, schedule pressure on the GC, a specific scope skill).

When to bid for volume, when to bid for margin

Volume bids make sense in two conditions: (1) you have crew sitting unutilized and the job at least covers burden and contributes to G&A, or (2) it is strategic — a new GC you want on your dance card, or a logo customer who brings repeat work. Margin bids make sense when your schedule is 60%+ booked three months out. If you are at 85% backlog and still bidding at walk-away, you are trading margin for nothing.

"If my backlog is past 12 weeks I don't chase. I bid what I want and let the competition win the cheap ones. Half the time they call me in August because somebody else folded on the job."

Danica Reyes, drywall sub with ~$9M volume, Denver

What to stop bidding on

There are job types that structurally lose money for drywall subs regardless of how sharp your pencil is. Bidding them is not conservative or competitive — it is feeding your shop to a GC at a discount.

Red-iron-schedule jobs where drywall follows a steel GC

If the GC is a structural-steel shop that is self-performing and treats drywall as a tail-end trade, your schedule is on fire before you sign. Steel goes late by 60%+ of the time. The drywall sub absorbs the compression. You have two weeks to do six weeks of work and the GC will not entertain a time-impact claim. Pass or price in 25% schedule compression contingency.

Occupied remodels with heavy dust control

Hospitals running ICRA Class III and IV, K–12 districts doing work while school is in session, any restaurant doing a partial remodel at night. Dust control hoods, HEPA filtration, after-hours premium, every partition swapped for temporary plywood — the real cost is 35–55% more than a normal TI and the GC almost never allows for it. Unless you have specific infection-control training and a rate structure built for it, walk away.

Single-story retail shells with heavy specified finishes

A 4,000 SF shell with a spec calling for Level 5 ceilings, skim-coat columns, and a dozen reveal details is a job where mobilization kills you. You drive out to the site, you set up, you do 120 hours of actual work, and the overhead per hour is 2.5× a normal commercial TI. Either bid it at resi-remodel rates or do not bid.

Public work with bond requirements you cannot carry

If the job demands a performance and payment bond at 100% of contract and your surety has you at 20% of that, you are not bidding it — you are buying a 4-point rate add just to qualify. Public work is great when your bond capacity is three times the job size. It punishes you when the job is two times your capacity.

The hardest thing in a drywall shop is saying "no" to a bid when you have empty calendar. But every "no" on a structurally losing job is a "yes" to a profitable one in a month. Shops that run 18–22% do not win every job on the street. They win the right ones, priced correctly, executed tightly, and collected fully.