What Will New Windows Actually Cost You?

Per-window cost vs. whole-house cost

These are two different budgeting problems, and homeowners mix them up constantly. A single failed window in a bedroom is a one-off repair call. Replacing every window in the house is closer to a kitchen remodel in scope, and it should be priced that way from the start.

A single installed window typically runs $450 to $900 before any material upgrade or ZIP adjustment, based on the baseline this calculator uses. Push it to fiberglass or wood, or pick a bay window over a standard slider, and that per-unit number climbs fast, sometimes two to three times over. A full house, meanwhile, isn't just that per-window number times your window count. Contractors often shave the per-unit price on bigger jobs because one mobilization covers the whole crew, one dumpster handles all the old frames, and permitting is a single trip instead of ten.

A house with 10 windows commonly lands at $5,000 to $12,000 installed. Do the naive multiplication instead (per-window price times 10) and you'll usually land high, which is exactly why getting an actual multi-window quote matters more than eyeballing it.

Vinyl vs. fiberglass vs. wood, side by side

Material is the single biggest lever on price, bigger than window type or install method. Here's how the three main options actually compare, not just on sticker price.

Window type multiplies on top of material. A casement or picture window runs about 1.2x a standard double-hung or slider. Bay and bow windows run about 2.5x, since you're paying for a structural build-out, not just glass and a frame. Install method matters too: a retrofit insert, dropped into an existing frame that's still sound, costs less than full-frame replacement, which strips the opening down to the studs.

When repair beats replacement

Not every bad window needs a full swap. A single pane that's fogged from a failed seal, a sash that sticks, a lock that won't catch: those are repair jobs, usually a fraction of replacement cost. Replacement earns its price when the frame itself is compromised. Wood rot, water staining around the sill, or a frame that's visibly out of square all point to a structural problem that a new sash or a re-glaze won't fix.

Age matters too, but less than condition does. A 15-year-old vinyl window with a broken balance is still a repair candidate. A 30-year-old aluminum single-pane with a failing frame is not, even if it still opens and closes fine, because the energy loss and the drafts are doing quiet damage to your heating bill every month it stays in place.

The insert-vs-full-frame choice above only applies once you've decided replacement is the right call. If you're not sure yet, a window repair contractor can usually tell you in one visit whether the frame is worth saving.

Replacement questions homeowners ask

In-depth window replacement guides

Get quotes to compare against this estimate

Everything above gets you close. Material, window type, and ZIP move the number in predictable directions, but the only way to know your real price is a written quote from a contractor who has actually measured your windows and seen your walls.