Philadelphia Bay Windows

Bay Windows are a Colonial Classic

Development in Philadelphia is moving forward by getting back to its roots. And few home features are more rooted in the city’s history than bay windows, which started appearing on Philadelphia rowhouses in the early 1800s — like the historic townhouses of Rittenhouse Square.

A bay window is actually a combination of three windows, joined at an angle, that extend beyond your exterior wall. They create an elegant architectural element on the exterior of your home and add space on the interior. The multiple windows and angles create a larger opening than standard flat windows, which brings more light and air into your room.

Commonly known as: Oriel window, box bay window

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Popular Local Trends & Styles


  • Traditional bay windows with curtains Bay Windows With Curtains

    Bay windows become a focal point of any room they’re in. They can stand alone and display their natural beauty, but many homeowners choose to decorate bay windows. There are many window covering options to choose from — drapes, blinds, valances, shades, vertical blinds — but curtains are the most sought-after window treatment choice in the Philadelphia area. Curtains can cover your bay windows yet are light enough to let in a little light — all while offering endless design choices.

  • Bay window with seating area Seats and Benches Since bay windows add extra square footage to your home, many homeowners take advantage by creating seats and benches in their newfound nooks. These little spaces are great for additional seating in a living room or breakfast room. Add some cushions and pillows to your bay window seat to create a place to read, relax, or just enjoy some sunlight.
  • Bay windows in a kitchen with table and chair Kitchen Bay Windows

    Kitchens are a primary point of congregation and entertaining. Bay windows can make your kitchen feel bigger and brighter. You can use the additional space for a bench. Or if you install a large bay window, you might be able to fit your table and chairs to create a dining room with a view. Smaller bay windows can be used above your kitchen sink or counters to improve the view from your entertaining workspace and bring natural light to a normally dark area of the kitchen.

  • Small bay window Small Bay Windows

    The narrow style of traditional Philadelphia townhomes and rowhouses leaves less wall space. Small bay windows can fit these homes and often match the original architecture of the colonial era. They also provide more light and space that makes small rooms look bigger. Philadelphia and its many historic neighborhoods have restrictions on the sizes of bay windows and other protruding architectural elements. So a smaller bay window size may be required depending on where you live.

Product Lines


Recommended Customizations1


The typical bay window configuration has one large picture window with smaller windows angled on the sides. Many homeowners choose to make the flanking windows operational — often using casement, single-hung, or double-hung windows — to bring in air from multiple directions. Brass hardware on these operational windows can recreate the elegance of bay windows from colonial times, while distressed hardware offers a modern yet rustic look. Grilles and trim are available on bay windows of any configuration, which can help you match the Victorian, Cape Cod, or colonial style of your Philadelphia home.

Antiek Bright Brass

Classic Collection - Antiek Bright Brass

Antiek Antique Brass

Classic Collection - Antiek Bright Brass

Spoon-Style Lock Bright Brass

Classic Collection - Spoon-Style Lock Bright Brass

Spoon-Style Lock Antique Brass

Classic Collection - Spoon-Style Lock Antique Brass

Sash Lift Bright Brass

Classic Collection - Sash Lift Bright Brass

Sash Lift Antique Brass

Classic Collection - Sash Lift Antique Brass

Spoon-Style Lock Distressed Nickel

Rustic Collection - Spoon-Style Lock Distressed Nickel

Spoon-Style Lock Distressed Bronze

Rustic Collection - Spoon-Style Lock Distressed Bronze

Sash Lift Distressed Nickel

Rustic Collection - Sash Lift Distressed Nickel

Sash Lift Distressed Bronze

Rustic Collection - Sash Lift Distressed Bronze

Antiek Distressed Nickel

Rustic Collection - Antiek Distressed Nickel

Antiek Distressed Bronze

Rustic Collection - Antiek Distressed Bronze

Sash Lift Bright Brass

Essential Collection - Sash Lift Bright Brass

Sash Lift Distressed Nickel

Essential Collection - Sash Lift Distressed Nickel

Sash Lift Distressed Bronze

Essential Collection - Sash Lift Distressed Bronze

Cam-Action Lock Bright Brass

Essential Collection - Cam-Action Lock Bright Brass

Cam-Action Lock Antique Brass

Essential Collection - Cam-Action Lock Antique Brass

Cam-Action Lock Distressed Nickel

Essential Collection - Cam-Action Lock Distressed Nickel

Cam-Action Lock Distressed Bronze

Essential Collection - Cam-Action Lock Distressed Bronze

Standard Bright Brass Fold-Away Cranks

Fold-Away Cranks - Standard Bright Brass

Traditional Grille Pattern
Traditional Grille Pattern
Custom Grille Pattern
Custom Grille Pattern
New England Grille Pattern
New England Grille Pattern
Victorian Grille Pattern

Victorian Grille Pattern

1Not all customizations are available in all Pella product lines.

Philadelphia Climate Recommendations


Bay windows take up a large chunk of wall space, which helps bring in natural sunlight and warmth in the cold winter months. Windows with argon glass and multiple panes provide better insulation and energy efficiency in Pennsylvania’s chilly winters and moderate summers. Choose more durable materials to protect your beautiful bay windows in this diverse climate.

Double or Triple Pane Glass

Double or Triple Pane Glass

Cut your energy costs with more panes of glass. Invest in energy-efficient double or triple pane windows that fill with insulating gas for adding thermal efficiency.

Low-E Protection

Low-E Protection

Keep warm in the winter by reducing the heat loss from your home. Window panes of glass with Advanced Low-E will help keep your home insulated, blocking out the cold and keeping the heat in. 

Durable Materials

Durable Materials

Frequent storms during the winter bring bitter cold and frozen precipitation. Wood with aluminum cladding, vinyl, and fiberglass are low maintenance and can help stand up to extreme weather. 

Why Choose Pella?


Customized with You in Mind

Pella windows and doors are made specifically for your home because one size doesn't fit all. With access to many materials, colors and options, including exclusive snap-in options for shades, blinds and grilles, along with smart home products and a proprietary finishing process that helps provide a quality finish.

Built to Last

Pella products are backed by some of the strongest window, door and installation warranties in the business. When installed by a Pella branch, your project is backed by our Pella Care Guarantee, our package of product warranties, installation warranty and service agreement that covers your products and their installation — including labor — for up to 10 years. See the written limited warranty for details, including exceptions and limitations, or contact Pella Customer Service at 877-473-5527.

We Come to You

An in-home consultation can help you explore all options and get a professional opinion on what will work best for you. During the consultation, local window professionals can come to your home to assess your window replacement needs and understand your priorities and budget.

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Explore Your Options with an Expert

A Pella Windows and Doors of Philadelphia expert can help you pick out a window that fits your home — and your style. Find your local Pella representative to schedule a free in-home consultation, measurement, and estimate.

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Frequently Asked Questions


Bay Window Projects in Philadelphia


See how other Philadelphia residents are upgrading their homes or restoring them to their historic roots using bay windows.

Related Posts


Get more design ideas, styles, trends, and inspiration for how to decorate your bay windows.

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