Transom Window Replacement Cost Guide (2026)

Transom windows are decorative windows placed above doors or other windows, designed to allow additional natural light into a room while maintaining privacy. They come in various styles including rectangular, arched, semicircular, and fan-shaped designs. Transom windows can be fixed (non-operable) or operable for ventilation.

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Transom Windows Cost Summary

Per-window pricing including installation (2026)

Low

$200

Average

$380

High

$600

Labor Cost$100 - $250
Materials Cost$100 - $350
Energy RatingVaries by glass type; Low-E options available
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Average Cost

$380

Lifespan

20-30 years

Maintenance

Low

Energy Rating

Varies by glass type; Low-E options available

Benefits

Adds natural light without sacrificing privacy
Enhances architectural character and curb appeal
Available in decorative patterns and stained glass
Can improve ventilation when operable
Increases perceived ceiling height
Adds value to home resale

Best For

Homes with high ceilings or tall entryways
Above front doors for curb appeal
Bathrooms needing light without privacy loss
Traditional, craftsman, or colonial-style homes

Things to Consider

!Custom sizes may increase cost significantly
!Arched or specialty shapes cost more than rectangular
!May require structural header modifications
!Cleaning can be difficult due to height placement

Frequently Asked Questions

Common questions about transom windows replacement

Transom window replacement typically costs $200 to $600 per window, with an average of $380. Custom shapes like arches or semicircles can cost $400-$1,000+. The price depends on size, shape, glass type, and whether the frame needs modification.

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