Based on aggregated data, a prefinished hardwood floor installs for about $6 to $18 per square foot and a site-finished one for about $8 to $20 per square foot. The difference is one line: site sanding, an optional stain and two to three coats of finish add $2 to $4 per square foot that a factory-coated board never pays. That line is only half the comparison, though. Prefinished boards carry the cost of the factory finish in their price, roughly $0 to $3 per square foot more than raw boards of the same species and grade. Net of both, a site-finished floor runs anywhere from about $1 per square foot cheaper to $4 per square foot dearer than its prefinished twin.
That spread is why published comparisons contradict each other. Retailers selling prefinished stock tend to report it as the cheaper route; contractors who sand and finish tend to report the reverse, and both can be right on a particular job. What decides it is the board premium on the boards actually being compared, the local labor rate and, years later, what each finish costs to maintain.
The Two Bills, Line by Line
Both routes share the boards, the subfloor prep and the labor to lay them. Only the finishing line and the price of the boards differ.
| Line item | Prefinished | Site-finished |
|---|---|---|
| Boards (per sq ft) | $3–$12, factory sanded, stained and coated | $3–$10, raw |
| Installation labor (per sq ft) | $3–$6 | $3–$6 |
| Sanding, optional stain, 2–3 coats (per sq ft) | None | $2–$4 |
| Installed total (per sq ft) | $6–$18 | $8–$20 |
| Crew days on 1,000 sq ft | 3–5 | 5–8 with water-based finish; 7–10 with oil-based |
| Finish applied | Several thin coats of UV-cured urethane, usually loaded with aluminum oxide | Oil-modified or water-based polyurethane, or a hardwax oil, brushed or rolled on site |
| Board edges | Eased or micro-beveled | Square, sanded flush |
| Stain choice | The manufacturer’s catalog | Any stain the finisher can mix |
The finishing band covers the common job: one sanding sequence with drum sander and edger, a stain coat or none, and two to three coats. A third coat, a two-part water-based finish, a custom-mixed color or a dust-containment sanding system moves a quote toward the top, and the line items behind each are priced on the hardwood refinishing cost page.
The day count is mostly drying time. Water-based polyurethane takes roughly 2 to 4 hours between coats, so sanding, stain and three coats can fit into two or three working days. Oil-based polyurethane needs about 24 hours between coats, which stretches the same sequence to four or five. A prefinished floor skips all of it: the last board down is the last day of the job.
Why Published Comparisons Disagree on Which Is Cheaper
The disagreement comes down to one number, the premium a prefinished board carries over a raw board of the same species, grade and width. Compiled retailer and contractor pricing for oak puts it between nothing and about $3 per square foot, and occasionally far more: one published contractor bid on a single room priced the prefinished boards at more than twice the raw ones, which made site finishing the cheaper route by thousands. Against that premium sits the finishing line. The table shows what a site-finished floor costs over its prefinished twin on 1,000 sq ft, at each combination.
| Prefinished board premium | Finishing at $2/sq ft | Finishing at $3/sq ft | Finishing at $4/sq ft |
|---|---|---|---|
| $0 per sq ft | Site-finished +$2,000 | +$3,000 | +$4,000 |
| $1.50 per sq ft | +$500 | +$1,500 | +$2,500 |
| $3 per sq ft | Site-finished −$1,000 | Even | +$1,000 |
Two readings follow from it:
- Where a manufacturer prices its prefinished line close to the raw board, which is common in the budget oak strip that big retailers stock, prefinished wins by the full finishing line.
- Where the prefinished premium is high, typically wide plank, select grade or a specialty color, site finishing closes the gap or wins outright, before any of the other differences on this page are counted.
A quote that prices the same species, grade, width and thickness both ways shows the premium directly. A quote that names only “prefinished oak” and “unfinished oak” can compare a select-grade board with a #2 Common one, which is a grade difference, not a finishing one.
What Each Route Costs for a Room and for a Whole Floor
The table below takes the midpoint of each band in the line-item table: $7.50 per square foot for prefinished boards, $6.50 for raw boards, $4.50 for installation labor and $3 for site finishing. That puts prefinished at $12.00 and site-finished at $14.00 per square foot installed. A real quote moves with species and grade; what stays steady is that the gap between the two routes scales with the floor area.
| Area | Typical room | Prefinished at $12.00/sq ft | Site-finished at $14.00/sq ft | Gap |
|---|---|---|---|---|
| 144 sq ft | 12×12 bedroom | $1,730 | $2,015 | $285 |
| 200 sq ft | Kitchen, open floor area | $2,400 | $2,800 | $400 |
| 300 sq ft | Living room | $3,600 | $4,200 | $600 |
| 1,000 sq ft | Most of a main floor | $12,000 | $14,000 | $2,000 |
| 2,000 sq ft | Two-story house | $24,000 | $28,000 | $4,000 |
The small-room rows are where both routes break down in practice. Flooring crews commonly carry a minimum job charge, and a finishing crew carries its own: setting up a drum sander and edger, sanding, staining and coating 144 sq ft takes nearly as many trips as 500 sq ft. A single site-finished bedroom therefore tends to price well above its per-square-foot figure, while a prefinished one is usually installed in a day.
The hardwood floor installation cost page carries the full per-tier tables by species, grade and room. For a typical whole job its national project range is $2,500 to $8,000, mid $5,000, with materials about $1,200 to $4,000 and labor about $1,100 to $3,500. The finishing decision lands almost entirely on the labor side of that split, which is why it is the part of the bill that moves most from city to city.
Where the Finishing Line Costs More
Installation labor is the same on both routes, so a metro’s labor factor raises both bills. The finishing line is labor too, and it is the only line one route pays and the other does not. The table applies each metro’s labor factor to the 1,000 sq ft scenario above, with board prices held flat, since material prices are broadly national.
| City | Labor Adjustment Factor | Prefinished, 1,000 sq ft | Site-finished, 1,000 sq ft | Gap |
|---|---|---|---|---|
| Chicago, IL | 1.33 | $13,485 | $16,475 | $2,990 |
| Seattle, WA | 1.29 | $13,305 | $16,175 | $2,870 |
| New York, NY | 1.23 | $13,035 | $15,725 | $2,690 |
| Phoenix, AZ | 0.99 | $11,955 | $13,925 | $1,970 |
| Houston, TX | 0.93 | $11,685 | $13,475 | $1,790 |
| San Antonio, TX | 0.85 | $11,325 | $12,875 | $1,550 |
Labor adjustment factors are derived from BLS Occupational Employment and Wage Statistics (May 2025): the median ratio of local to national hourly wages across the trades that do this work. How this is calculated.
The gap column is the cost of choosing site finishing in each metro. Because the finishing line is pure labor while the board saving is not, the gap is widest where trade labor is dearest and narrowest where it is cheapest. In a high-labor metro, a prefinished board premium has to be larger before site finishing breaks even.
Two Different Finishes, Not One Finish Applied Twice
A factory line sands each board, stains it and lays down several thin coats of urethane, cured under ultraviolet lamps. Most lines load one or more of those coats with aluminum oxide, a mineral grit hard enough to be used as an abrasive in sandpaper. The result is a film harder and more even than a brush or roller can lay on a floor in a house, which is the basis for the long finish warranties that come with prefinished boards.
A site crew applies a different family of products: oil-modified polyurethane, one- or two-part water-based polyurethane, or a penetrating hardwax oil, in two or three heavier coats over the whole floor at once. They wear faster than a factory film, and they are also far easier to renew, because a fresh coat of the same product bonds to a lightly abraded surface. How long each chemistry lasts and what each costs per year of service is compared in the finish table on the refinishing cost page.
That trade, a harder film now against an easier recoat later, is the part of this comparison that no installation quote shows.
The Bill That Arrives Later: Recoats and Refinishes
A hardwood floor’s finish is maintained on a cycle of its own. Aggregated data puts a screen-and-recoat, a light abrasion and one fresh coat that removes no wood, at about $1 to $3.50 per square foot every 3 to 5 years in normal wear, and a full sand and refinish at about $3,000 to $6,500 for 1,000 sq ft once the finish has worn through. Prefinished and site-finished floors take both, but not at the same price or with the same consequences.
The recoat. On a site-finished polyurethane floor a recoat is routine. On a factory aluminum-oxide finish, the grit that makes the film hard also makes it hard to scuff evenly, and a standard screen can leave swirls or fail to give the new coat anything to grip. Finish manufacturers sell chemical etching and adhesion systems for these floors, and a test patch is the usual first step before a whole floor is coated.
The first full sanding. The National Wood Flooring Association, writing in Hardwood Floors magazine, describes the high-abrasion finishes used on factory-finished floors as “very difficult to sand,” and notes that removing the eased edges of a beveled floor “may require extra cuts.”
The warranty. Factory finish warranties are written against wear-through and peeling, not against scratches and dull lanes. The Bruce hardwood floors warranty guide states that any “modification of the finish, such as sanding or abrading, voids this warranty.” Because every recoat starts with abrasion, the first maintenance coat on a prefinished floor usually ends the long warranty it was bought with.
| Maintenance event | Site-finished solid | Prefinished solid | Prefinished engineered |
|---|---|---|---|
| Screen-and-recoat, every 3–5 years | $1–$3.50/sq ft, standard products | Same band; may need an etch or adhesion system and a test patch | Same as prefinished solid; the only renewal a thin veneer gets |
| First full sanding, 1,000 sq ft | $3,000–$6,500 | Above the $3,000–$6,500 band (harder finish, bevels to cut out) | Only with a wear layer of about 2.5 mm (3/32 inch) or more |
| Full sandings over the floor’s life | About 4–6 | About 4–6; the first may take extra wood at the bevels | 0–3, set by the veneer |
| Factory finish warranty after a recoat | No factory warranty to lose | Usually void | Usually void |
None of this changes what the wood itself can take. A 3/4-inch solid board holds about 4 to 6 full sandings whether its first finish went on in a factory or in the living room, and lasts 50 to 100 years either way. What changes is the price of the first renewal. How finish life and floor life run as two separate clocks, and what a year of each costs, is set out in how long hardwood floors last.
Engineered hardwood is the special case. Nearly all of it is sold prefinished, and its refinishing budget is its veneer: below about 2.5 mm (3/32 inch), a full sanding is not an option at all and the factory finish is maintained by recoats until the floor is replaced. Wear-layer tiers and their prices are on the engineered hardwood installation cost page, and the construction trade-offs on the engineered vs solid hardwood comparison.
The Micro-Bevel: What the Groove Buys and What It Costs
A site crew lays raw boards and sands the whole floor flat afterward, so minor height differences between neighboring boards, called overwood, disappear in the first pass. A prefinished floor cannot be sanded after it is laid without destroying the factory finish. Manufacturers solve that by easing every edge, so a board sitting a hair higher than its neighbor reads as a shadow line rather than a lip.
The groove has costs of its own:
- It collects grit. Every seam is a small channel that holds fine dirt, and a dust mop rides over it. Over years the lines can read darker than the boards.
- It changes at the first sanding. NWFA guidance warns that sanding a beveled-edge floor changes the profile of the bevel, and that a micro-bevel may be sanded out entirely. Restoring a deeper bevel afterward is hand work with scrapers and grooving tools, billed as labor.
- It holds finish. Recoat coats pool in the grooves unless they are worked in by hand, which is part of why recoating a beveled floor takes longer than recoating a flat one.
Square-edge prefinished boards exist, but they rely on a near-perfect subfloor and an exacting install. For most buyers, the bevel is part of the prefinished package.
Dust, Odor and Days Out of the House
Site finishing is a construction phase inside an occupied home. Sanding raw boards produces fine dust that travels well beyond the room, and the finish coats bring solvent odor for days with oil-based products and much less with water-based ones. Aggregated guidance has occupants leaving for about 24 to 48 hours with oil-based polyurethane, and staying behind sealed doors with water-based. A containment sanding system cuts airborne dust at a premium of about $2 to $3 per square foot.
The schedule after the last coat matters as much as the work itself. Data compiled on the flooring installation timeline page puts site-finished floors at:
| Milestone | Prefinished | Site-finished |
|---|---|---|
| Light foot traffic | Immediately | 24–48 hours |
| Furniture back | Same day to 24 hours | 3–7 days |
| Rugs back | 24 hours | 2–4 weeks |
None of those days shows up on a quote, but each has a cost somewhere: nights away, a kitchen out of use, furniture stored in a garage. On a job that runs through the main living space, the time difference can outweigh a $1 to $2 per square foot price difference in either direction.
Matching an Existing Floor
This is where site finishing earns most of its premium. New raw boards woven into an old floor can be sanded and finished in one pass with the floor around them, so old and new boards share one stain and one sheen and the seam between them disappears. The price of that seamless result includes the old floor: the existing area is sanded and refinished along with the new boards, at the refinishing rate of about $3 to $8 per square foot.
A prefinished extension avoids that work but has to match a factory color to a floor that has aged, ambered or been refinished since it went down, and factory colors are retired with each catalog cycle. Matching a prefinished floor to itself later, for a board repair after a leak, depends on spare boxes of the same run kept from the original install. A site-finished floor can take a new board of the same species and be blended in with stain and finish at any point in its life.
Kitchens, Entries and Wet Areas
Neither type of hardwood is waterproof. The difference in wet rooms is the seams. On a site-finished floor the coats go on after installation and flow across the joints, so the top of each seam is bridged by finish. On a prefinished floor, every joint is a bevel with factory finish on each board face and none across the gap, so a spill near a sink or dishwasher can run along the grooves and wick into board edges.
That is why site-finished boards are a common pick in kitchens, entries and mudrooms, and why prefinished floors there depend more heavily on prompt wiping, mats at the sink and a sealed perimeter. Material by material, the kitchen trade-offs are priced in kitchen flooring cost, and below-grade rooms are covered in the basement flooring guide.
Which Route Fits Which Job
- A fast install with the household staying put: prefinished, by days. The floor is usable the day it is laid.
- Budget oak in a standard color: usually prefinished, because the board premium on commodity strip is small and the full $2 to $4 finishing line is saved.
- Wide plank, select grade or a custom stain: price both routes. The board premium is often large enough to put site finishing even or ahead before its other differences are counted.
- Extending or matching an existing hardwood floor: site-finished, since one finish over old and new boards is the only route to a seamless join.
- A kitchen or entry: site-finished floors bridge the seams; prefinished floors leave them open.
- The cheapest first recoat: site-finished polyurethane, since standard recoat products bond to it without an etching step and no factory warranty is lost.
- Engineered hardwood: almost always prefinished, and its wear layer, not its finish, sets how long the floor lasts.
Related Costs
- Hardwood floor installation cost: per-tier and per-room budgets, species, grade and installation method
- Price to refinish hardwood floors: sanding, stain and finish line items, and finish durability by type
- Engineered vs solid hardwood cost: material cost, moisture tolerance and 40-year ownership
- Best flooring for pets: how finish sheen and hardness handle claws
- Flooring cost hub: every flooring material and job with city figures
For how national ranges are compiled and how city labor factors are measured, see the cost methodology.
Last updated: October 2026. All figures reflect aggregated national cost data and published retailer and contractor pricing; they are not a quote for a specific floor. Actual pricing depends on species, grade, plank width, finish system, subfloor condition and local labor market. See the methodology page for how figures are calculated and sourced.