• WILLBII INC

Choosing Windows & Doors for your ADU

Updated: Nov 9



We are on our way to building your dream ADU. Let’s talk about the materials such as windows & doors. The 2nd biggest investment with any structure would be the windows and doors.


These can cost anywhere from 20,000 to 100,000 depending on your taste in style. Traditionally any slab-style door would work, but most people nowadays want double doors, French doors, sliding doors, bifold doors with lots of windows, impact resistant, doors with custom designs on them, and doors made of different materials. You name it, they probably have it. A normal door would be around $2,500 with installation, but your cost would go up with any variation added such as the type of wood alone, framing style, etc.

Windows are just as important so picking the right window will make your home feel right. Standard Windows run from $1000-$2000 for each and most ADUs will have about 6 windows going around the house. This range can go anywhere from $10,000 to $20,000. There are many types of styles such as double-hung, casement, slider, awnings, and custom-shaped windows. Select what is best suitable for your property. Casements & slider windows are typically the design norm. We also advise future ADU home dwellers to have reference images available when asking for a quote.


Contact me for more information on ADUs and you may also visit our website at www.willbii.net my phone number is 626-415-7115

Steven Cu - ADU Specialist

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