Window Styles

Bay & Bow Windows

Bay and bow windows push out from the wall, adding light from three directions and a little extra room inside, often enough for a window seat. Many East Bay homes have an original bay that’s overdue for new glass.

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How They Work

Windows That Project From the Wall

A bay window is usually three units: a large center window with two angled side windows, set at 30 or 45 degrees. A bow window uses four or more equal windows in a gentle curve. Both project outward, so the room gains floor space and the windows catch light from several angles.

Because they extend past the wall, bays and bows need proper support, a roof or head board above, and careful insulation and flashing. That’s where the installation matters as much as the windows themselves.

Pros and Cons

Are Bay and Bow Windows Right for You?

The honest trade-offs, from the crew that installs them.

Why people choose them

✓Adds light from three or more directions
✓Creates room for a window seat or plants
✓Big curb appeal boost from the street
✓Side units can open for cross ventilation
✓Replaces a tired old bay with modern glass

Worth knowing

•More involved installation: support, roof and insulation
•Takes up outdoor space where it projects
•Costs more than flat windows of the same width

East Bay Homes

Where Bays and Bows Work Best in East Bay Homes

The rooms and homes where we recommend them most.

Living and dining rooms facing the streetCurb appeal and light

Kitchens with a small garden viewA garden window is a mini bay

Victorians and traditional homes with original baysRestore with efficient glass

Danville and Alamo homes with large front roomsAdds a focal point

Reading nooks and window seatsUsable extra space

Rooms that feel darkLight from three angles

See how we approach homes in Danville, Alamo, Oakland, Walnut Creek.

Common Questions

Bay and Bow Window FAQ

Straight answers from the people who install them.

What’s the difference between a bay and a bow window?+

A bay is usually three windows with angled sides. A bow uses four or more equal windows in a gentle curve and projects a bit less.

Can you add a bay where there’s a flat window now?+

Often, yes, but it involves framing, support and a roof over the projection, plus a permit. We look at the wall and explain what’s involved before quoting.

My old bay window leaks. Can you just replace the glass?+

We replace the full units rather than just glass, and we check the roof, head board and flashing above, since that’s where most bay leaks start.

What’s a garden window?+

A small box-shaped bay, usually over a kitchen sink, with glass on the top and sides for herbs and plants.

How much do bay and bow windows cost?+

It depends on the brand, material, size, glass and how many you’re replacing. We don’t quote a number before measuring. You get a fair, detailed written quote for free, and the quote is what you pay.

Free estimate · No obligation

Get a Free Quote on a Bay or Bow Window

Tell us which windows you want to replace. Alex or Leon will measure, help you choose the style, brand and glass, and send a fair written quote. We usually reply within 48 hours.

Free, no-pressure estimates
Our own crew, no subcontractors
5.0 on Google, 28 reviews
4-year workmanship warranty

Prefer to talk? Call or text (925) 393-3578

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