What Is the Cost of Transom Windows in 2024?

Whether you're looking for an exquisite decorative transom with stained glass or just want to add a good-old fanlight transom to your entry door or another window, you should start by learning the basics of functioning and maintaining these units, as well as their installation costs. 

This cost guide is made to inform you of all pricing aspects related to transom windows. From labor expenses to cost variabilities by style, frame material, and size, we have covered all major aspects to help you stay within your budget. 

Readers who aim to get a personalized transom window replacement cost rather than get a clue about the national average expenses can leverage our free contractor-matching service. All required is to complete the request form using the link below. 

The Average Cost of Transom Windows

Transom windows are relatively affordable to install as they are compact and don't require specific preparation for mounting in the existing opening. Nevertheless, you won't go without professional assistance when creating an opening above a door or existing window. The process involves cutting into your home's structure, which might affect its integrity if not done correctly. This implies that labor expenditure on transom window installation varies widely depending on the project type. Mounting a window in a prepared opening may cost you from $70 to $150 per unit, while installation that involves construction work can lead to a bigger estimated sum, usually from $95 to $250 per unit. 

Material expenses for a transom window replacement project range from $250 to $550 per unit. Nevertheless, this is an average range that fluctuates depending on the size of the window, its functionality, and the frame material. For instance, you can expect to be charged up to $1,000 for openable double-hung windows with wooden frames and stained glass.

Transom window cost - labor and material expenses

Transom Window Cost Breakdown

Like any other type of window, a transom one may vary in cost depending on the range of major and minor factors, including glazing type, size, shape, material, and operation style. Add-ons like window grills, motorized openings, decorative glass, and insect screens can add to the final transom window cost. Continue reading to dive deeper into the cost-formation factors involved in transom window installation and prepare for unexpected expenses. 

Cost of Transom Windows by Size

Typically, the width of a transom window is designed to align with the door or window positioned beneath it. This means that if a front door has sidelights accompanying it, the transom window is often as wide as the entire arrangement. The height of the transom window can differ, and this is determined by factors like the form of the window and the height of the ceiling in the home. Larger transom windows, which require more materials to construct, tend to be more expensive than smaller ones.

Cost of Transom Windows by Operation Style

Transom windows come in two operational styles: functional and non-functional. Initially, functional transom windows were more prevalent and designed to promote air circulation in the pre-air conditioning era. These windows, which could be opened independently of the door below, are now less popular and are more expensive due to their operability. On the other hand, non-functional transom windows have become more common. They do not open but allow light to filter from outside to inside or inter-room, enhancing a home's illumination and aesthetic appeal. 

While the exact cost of these windows can vary depending on various factors, functional transom windows typically are priced higher than their non-functional counterparts due to their added features. Regardless of the type chosen, you can expect to pay between $350 and $800 for transom window installations.

Cost of Transom Windows by Type

Transom windows are commonly found in three major types: paneled, solid, and fanned. Paneled transom windows are usually rectangular, aligning with the door's width for a balanced look. They feature vertical or horizontal trim that divides the glass into sections. On the other hand, solid transom windows, while also typically rectangular, do not have any trim divisions, offering an unobstructed glass view. Fanned transom windows, also known as fanlights or Federal-style transoms, have a semicircular design generating an arch effect above the door. 

The average cost of paneled and solid transom windows typically ranges from $200 to $600, while the more intricate fanned transom windows can range from $300 to $800, depending on size, materials, and installation complexity.

Cost of Transom Windows by Shape

Transom windows come in a variety of shapes that translate into their size, functionality, and visual appeal. Arched transom windows, renowned for their distinct, elegant curve, add a classic touch and typically cost between $300 and $800. Semi-arched windows blend the traditional with the contemporary and generally range from $250 to $700. Rectangular transom windows, the most common due to their versatility, can fit over doors or windows and usually range from $200 to $600. Lastly, square transom windows offer a modern, symmetrical aesthetic and average between $200 and $600 in price.

Cost of Transom Windows by Frame Material 

Transom windows come in multiple frame options, from vinyl and aluminum to wood and composite. They are often selected to match the overall home's exterior and blend with floors, entrance doors, and other windows in color and material. 

Vinyl transom windows are a cost-efficient choice, prized for their durability and low upkeep. They typically cost between $200 and $600. Wood frames, revered for their classic, timeless appeal, are on the pricier side due to the material's natural beauty and insulating properties, typically running from $400 to $1000. Aluminum frames, favored for their modern appeal and strength, are somewhat pricey but less so than wood, generally costing between $300 and $800. 

Please note that these price ranges are only national averages and can vary based on the window size, design intricacies, manufacturer, and material quality. If you seek a relevant price for your window project, don't hesitate to leave us your estimate request. Thanks to our ramified nationwide network, we can link you to window installers in your region who can consult you on your project cost and help you accomplish a transom window installation or replacement project.