Cost

Door and Hardware Cost Estimation and Quoting

What actually drives cost per door and per hardware kit, how to stack a quote that holds, and the estimating gaps that quietly eat your margin.

Cost per door stacks in layers. On a typical commercial hollow metal or wood slab, material runs 45 to 55 percent of factory cost, direct labor 15 to 20 percent, finish and coating 8 to 12 percent, hardware 10 to 15 percent, and test plus packaging 3 to 6 percent. For a $180 factory cost door, that is roughly $95 material, $32 labor, $18 finish, $22 hardware, and $13 test and pack. Get the material percentage right first, because a 5 point swing there moves the whole quote more than doubling any single labor operation. Estimators who chase labor pennies while guessing material burn the wrong end of the stack.

Material cost is driven by yield, not just sheet price. A slab core at $6.20 per square foot with 66 percent yield costs $9.39 per usable square foot, but push yield to 88 percent through better nesting and the same core drops to $7.05, a 25 percent material saving with zero purchasing negotiation. Feed your real size mix through the Door Slab Material Yield model before quoting, because the offcut you ignore in the estimate becomes scrap you pay for in production. Scrap allowance of 3 to 5 percent on top of net material is realistic for wood; hollow metal often runs tighter at 2 to 3 percent.

Hardware kit cost is where quotes bleed. A lockset, three hinges, a closer, and a strike can range from $28 for residential grade to $210 for Grade 1 commercial with electrified components. Buyers substitute finishes (US26D satin chrome versus US10B oil-rubbed bronze) and grades late, and each change moves kit cost 15 to 40 percent. The Hardware Kit Cost calculator lets you price the exact bill of materials per opening rather than carrying a blended average that is wrong on both ends. Quote hardware as a separate line so a spec change is a change order, not a margin hit you absorb silently.

Labor cost comes from standard minutes times a loaded rate, not headcount guesses. At 22 standard minutes per slab, 0.85 efficiency, and a $38 fully loaded hourly rate, direct labor is (22 divided by 0.85) divided by 60 times $38, or about $16.40 per door. Use the Door Assembly Labor and Lockset Assembly Throughput calculators to convert your line balance into minutes per unit rather than dividing weekly payroll by units, which hides overtime and idle time. A quote built on theoretical minutes without the efficiency divisor understates labor by 15 to 18 percent on most lines.

Finish is a per-square-foot cost that scales with coats and cure, and it is routinely under-quoted. A catalyzed two-coat finish at $1.85 per square foot on a 21 square foot slab is $38.85, before the energy and floor time of a 2 hour cure. The Finish Coating Cost calculator ties coverage rate, coats, and material price into a per-door number so you stop quoting finish as a flat adder. Rework matters here: a 4 percent finish reject rate at $39 a slab adds $1.56 per good door, and premium colors or low-VOC systems can lift the base finish cost 20 to 30 percent.

Test and packaging reserves are small per unit but deadly if omitted. Fire-rated lines must amortize destructive test samples: if a positive-pressure fire test consumes 3 full assemblies at $220 each every certification cycle covering 5,000 doors, that is $0.13 per door, and the Fire-Rating Test Sample Cost calculator spreads that correctly. Access control units carry bench test labor from the workload calculation, and packaging damage reserve typically runs 0.5 to 2 percent of factory cost depending on ship mode. The Packaging Damage Reserve calculator turns your historical damage rate into a per-unit accrual so freight claims do not come out of margin.

Overhead and markup finish the quote. Apply factory overhead as a rate on direct labor or machine hours, commonly 120 to 180 percent of direct labor in a mixed door plant, then add SG&A of 8 to 12 percent and target margin. On the $180 factory cost example, a 150 percent overhead rate on $16.40 labor adds $24.60, pushing burdened cost near $205, and a 30 percent gross margin sets price at about $293. The most common quoting error is double-counting: burying overhead in both a labor multiplier and a flat percentage, which either prices you out of the bid or hands back margin you never needed to give.

Custom and low-volume orders need a setup recovery line or they lose money. A one-off order of 8 fire-rated openings still carries engineering release, machine setup, and a full fire sample amortization spread across only 8 units, so per-door setup recovery can add $40 to $90. Use the Custom Order Lead Time calculator to expose the queue days that tie up working capital, then price expedite and small-lot premiums explicitly. The rule of thumb: orders under 25 units should carry a 12 to 20 percent small-lot uplift, and rush jobs inside your standard 20 day lead time justify another 10 to 15 percent.

Published 2026-07-01.