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Replacement windows are priced per window, installed. The Window Replacement Cost Calculator multiplies the number of windows by that price, using Zonda's 2025 Cost vs. Value Report (Journal of Light Construction) by default: replacing ten 3 × 5 ft double-hung windows with insulated, low-E, simulated-divided-light units and matching exterior trim averages $22,073 nationally in vinyl and $26,781 in aluminum-clad wood — about $2,207 and $2,678 per window. It shows both materials side by side and the extra cost of wood, about $471 per window. Size, style, glass, storey, region and full-frame versus insert installation all move the price, so a local quote per window can replace the national average. Bedroom windows are emergency escape openings under IRC R310.2 — at least 5.7 sq ft of net clear opening (5.0 at grade), 24 in clear height, 20 in clear width and a sill no higher than 44 in. Eight vinyl windows come to about $17,658; eight wood windows to $21,425.
Zonda’s 2025 Cost vs. Value Report (Journal of Light Construction, jlconline.com/cost-vs-value/2025) prices replacing ten 3 × 5 ft double-hung windows with insulated, low-E, simulated-divided-light units and matching exterior trim at a national average of $22,073 in vinyl and $26,781 in aluminum-clad wood — about $2,207 and $2,678 per window installed — with $16,657 and $18,764 of value at resale. Multiply by the number of windows, or use a local quote per window.
| Windows | Vinyl double-hung | Wood double-hung |
|---|---|---|
| 1 | $2,207 | $2,678 |
| 2 | $4,415 | $5,356 |
| 3 | $6,622 | $8,034 |
| 4 | $8,829 | $10,712 |
| 5 | $11,037 | $13,391 |
| 6 | $13,244 | $16,069 |
| 8 | $17,658 | $21,425 |
| 10 | $22,073 | $26,781 |
| 12 | $26,488 | $32,137 |
| 15 | $33,110 | $40,172 |
| 20 | $44,146 | $53,562 |
| 25 | $55,183 | $66,953 |
Bedroom windows are emergency escape openings under IRC R310.2: at least 5.7 sq ft net clear opening (5.0 sq ft at grade), 24 in clear height, 20 in clear width and a sill no more than 44 in above the floor.
Zonda's 2025 Cost vs. Value Report (Journal of Light Construction) puts the national average for replacing ten 3 × 5 ft double-hung windows with insulated, low-E, simulated-divided-light units at $22,073 in vinyl and $26,781 in aluminum-clad wood — about $2,207 and $2,678 per window, professionally installed with exterior trim.
$22,073 for vinyl and $26,781 for clad wood on the 2025 Cost vs. Value national averages, which the report puts at $16,657 and $18,764 of added resale value. Your price depends on size, style, glass package, how many storeys up the windows are and whether the frames are replaced or new sashes go into the old frames.
Vinyl. On the 2025 Cost vs. Value averages a vinyl double-hung costs about $2,207 installed and a clad-wood one about $2,678 — $471 more per window, or $4,708 more across ten.
Measure the width of the existing frame jamb-to-jamb at the top, middle and bottom and the height head-to-sill at the left, centre and right, and use the smallest of each. Installers re-measure before ordering, so this is for comparing quotes.
Many jurisdictions require a permit. Bedroom windows are emergency escape openings under IRC R310: at least 5.7 sq ft of net clear opening (5.0 at grade), 24 in clear height, 20 in clear width and a sill no higher than 44 in. Ask the installer to confirm a replacement keeps each bedroom escape opening compliant.
New siding at the same time? The siding cost calculator prices vinyl and fiber cement from the same report.
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