Deck Staining Cost Calculator

About $1,050 professionally for a sound deck that just needs a wash and two coats of semi-transparent stain — roughly $840–$1,417 — including 42 ft of railing and 5 steps. Angi's 2026 data puts most staining jobs at $550–$1,250, and Fixr's 14×20 project row is $560–$1,400; this deck lands mid-band because railing and stairs are included in the number, which bare-floor quotes leave out.

On the 280 sq ft deck above, 42 ft of railing plus 5 steps adds about $194 — call it $4–$5 per linear foot of rail. Railings stain slow because every baluster has four sides: crews budget roughly one gallon of stain per 100–150 linear ft of railing, versus 200–300 sq ft of floor per gallon.

Day one, almost nothing: on this deck the three options land within about $60 of each other ($988 / $1,050 / $1,030). Over a decade, transparent costs the most — it fades in 1–2 years and needs restaining, semi-transparent holds 2–3 years, and solid film stains stretch 3–5 years but peel (rather than fade) when they fail, which makes the next prep job pricier.

Prep, not stain. A failing finish has to be stripped, pressure-rinsed, neutralized and sanded before any stain goes on — Fixr prices full restaining at $4–$7/sq ft against $2–$5 for fresh wood, and puts prep alone at $2.25–$9/sq ft. On this calculator, flipping the 280 sq ft default from "sound old stain" to "failing finish" raises the typical from $1,050 to $1,414.

Materials for the default 280 sq ft deck run about $251 — stain, cleaner/brightener and applicators. Labor is roughly 75% of a pro quote, so the savings are real; the costs are a rented pressure washer or floor sander ($35–$100/day), two weekends of wash-dry-stain-dry weather, and the risk that double-coated laps or a skipped brightener show for years. Most first-timers do fine on floor boards and struggle on balusters.

Let the wood dry 24–48 hours after washing (48 in humid climates) until moisture reads under 15% on a meter. Stain in 50–90°F out of direct sun, with no rain forecast for 24 hours and overnight lows above 50°F. Brand-new pressure-treated lumber is the exception: let it weather 4–12 months until it can absorb a water droplet, or the stain just sits on top.

No — staining and sealing are maintenance work, no permit anywhere in the US. Three caveats worth knowing: HOAs commonly require approval of stain color on visible decks, and some specify opacity (solid covers the grain like paint; transparent shows it); if pre-1978 deck rails carry old oil paint (not stain), sanding them is lead-safe (RRP) work for a certified contractor — a repaint scenario, not a stain job; and if prep reveals rotted boards or a railing section you decide to rebuild, that structural repair can trigger a permit even though the staining never would.

No. A sealer is a clear water-repellent with no pigment — UV rays still gray the wood, so it lasts 1–2 years. A stain adds pigment, which is what blocks UV; modern penetrating deck stains are self-sealing, so 'stain and seal' is one product and one price. If a quote lists a separate sealing pass over a penetrating stain, ask what it adds — a film-forming topcoat over penetrating stain can trap moisture in the boards and peel, and the honest answer is usually 'nothing'. The one legitimate separate-seal case is end-grain sealer on the cut ends of new lumber during construction.