Hardwood refinishing cost by job
Standard sand-and-refinish runs $4–$8 per square foot for oak in normal condition, plus fixed setup, equipment, and furniture-moving costs that weigh most on small rooms; staining adds to that:
| Area | Standard refinish | With color change |
|---|
| 200 sq ft room | $1,600 – $2,600 | $1,900 – $3,100 |
| 600 sq ft main floor | $3,300 – $5,600 | $4,200 – $7,000 |
| 1,000 sq ft | $4,900 – $8,400 | $6,400 – $10,800 |
Same-color stain runs $5–$10 per sq ft; a color change $6–$12. Stairs are billed per step ($35–$60).
Refinish vs replace
Refinishing ($4–$8/sq ft) restores floors that still have wood to work with — a solid 3/4-inch hardwood floor can be sanded and refinished roughly 5–10 times over its life, making it dramatically cheaper than replacement when the boards are sound but the finish is worn, scratched, or dated. Replace instead when boards are cupped from water damage, cracked, or already sanded down near the tongue. Engineered hardwood can sometimes be refinished too, but only if its veneer is thick enough — a light pass at most.
Finish choice: oil vs water poly vs hard wax
- Oil-based polyurethane ($1.10–$1.85/sq ft) — warm amber tone, very durable, but slow to dry with strong fumes.
- Water-based polyurethane ($1.40–$2.30/sq ft) — dries clear, fast, and low-odor; the popular modern choice.
- Hard-wax oil ($2.20–$3.50/sq ft) — natural matte look that's easy to spot-repair, though it needs periodic re-oiling.
For a near dust-free job, add full HEPA dust containment ($0.55–$0.95/sq ft) — well worth it in an occupied home.
FAQ
How much does hardwood refinishing cost in 2026?
Standard sand and refinish runs $4-$8 per sq ft for oak in normal condition, plus fixed setup and equipment costs. Same-color stain $5-$10 per sq ft; color change $6-$12 per sq ft. A 600 sq ft main floor typically runs $3,300-$5,600 standard, $4,200-$7,000 with color change.
Can I sand and refinish engineered hardwood?
Sometimes. Engineered floors have a thin wear layer (1-3 mm typical). 3 mm or thicker can usually take one screen-and-recoat or one light sand. Less than 2 mm cannot be sanded.
Should I move out during refinishing?
Oil-based polyurethane has strong VOCs and 24-72 hr cure; water-based is much milder. Most homeowners stay out at least 1-2 nights for oil-based, 1 night for water-based. With pets / asthma / kids, plan to stay out for the full cure.
How long does hardwood floor refinishing take?
A typical floor takes about 3-5 days including cure time - sanding, staining, and multiple finish coats. Water-based polyurethane dries fastest; oil-based needs longer between coats. Plan to stay off the floor until the final coat cures.
Oil-based or water-based polyurethane?
Water-based ($1.40-$2.30 per sq ft) dries clear, fast, and low-odor - the popular modern pick. Oil-based ($1.10-$1.85) adds a warm amber tone and is very durable but dries slowly with strong fumes.
How many times can hardwood floors be refinished?
A solid 3/4-inch hardwood floor can typically be sanded and refinished 5-10 times over its life, which is why refinishing ($4-$8 per sq ft) is far cheaper than replacement when the boards are still sound.
More questions
Do I need a permit to refinish hardwood floors?
No. Sanding and recoating an existing floor is a finish/cosmetic job — it doesn't touch structure, gas, electrical, or plumbing, so unlike those trades it does not require a building permit. (An HOA or condo board may have its own rules about floor work and dust, but that's a private restriction, not a code permit.)
Refinish, or just screen-and-recoat?
Two different jobs. A screen-and-recoat (a light buff and one fresh coat of finish) refreshes a floor that's only surface-worn, costs far less, and is done in a day — but it can't remove deep scratches, gray water stains, or pet damage. A full refinish sands the boards down to bare wood to erase all of that and can change the stain color. If the wear has reached the wood itself, buffing won't fix it.
Can any floor be sanded, or can boards be too thin?
There's a limit. Solid strip flooring can usually be fully sanded only a handful of times before the tongue-and-groove is reached; a floor already refinished two or three times, or thin engineered flooring with a shallow wear layer, may have too little wood left to sand safely and needs board replacement instead. A good refinisher checks the remaining thickness before quoting a full sand.
Should I test the stain color first?
Yes, on your actual floor. The same stain reads completely differently on red oak vs white oak vs maple, and old wood takes color unevenly, so reputable finishers brush a few sample stains on a sanded patch of your own floor and let you approve it in your light before staining the whole room. A chip from a can or an online photo is not reliable.
Oil-based or water-based polyurethane?
Oil-based poly is cheaper, ambers the wood a warm tone, and is very durable, but it smells strongly and cures slowly. Water-based poly dries fast, stays clear (no yellowing), and has far lower odor, but usually costs more and needs more coats. The choice affects both the look and how long the room is out of service.
How long before we can walk on it or move furniture back?
This is the part people underestimate. Between coats the finish has to dry before the next one goes on, and after the final coat you can typically walk in socks in about 24 hours — but furniture should wait a couple of days and area rugs often a week or more while the polyurethane fully cures, or you'll dent and print the soft finish. Plan to be off the floor, not just out of the dust.
