Enhance your home's aesthetic

Replacement Bay Windows

Whether you’re looking to add a dramatic new look and light to a room, or replacing an existing one, our replacement bay windows are what you need. Like all our windows, we start with a strong, durable frame. From there, you can choose from a host of options such as which type of windows you want included, interior trim, and much more.

The best part is with such an expansive window setup, our expert installers know how to remove your old windows and properly install your new replacement bay or bow window to make sure it’s safe, secure, and sealed for decades. Your design consultant will have all the information, so you’ll get exactly what you need to protect and beautify your home.

***View all the available colors and finishes to match your home below.

Available Customizations:

Interior & Exterior Colors

Beige

Brown

Soft White

Almond

Amazon Green

Black

Bronze

Burgundy

Champagne

Coastal Dune

Colonial Ivory

Forest Green

Gray

Rosewood

Royal Brown

Sandstone

Sierra

Terratone

Tile Red

Wedgewood Blue
Interior Woodgrain

Brazilian Cherry

Cherry

Light Oak

Medium Oak
Exterior Foil Laminates

Antique Bronze

Beige Laminate

Chestnut Brown

Cocoa

Green

Sierra Laminate

Get Started Browse other windows Browse other windows Bay Windows

Awards & Affiliations

Window Nation Awards & Affiliations

Get what you want you really want

We'll bring your Bay windows project to life.

We'll bring your Bay windows project to life 5

Browse other windows Get Started

our 3-step process

Getting New Windows Installed Is Fast and Easy

Step 1

Free consultation & design

Our designers will come to your home to learn about your specific needs and create a custom design that works with your budget.

Step 2

Professional window installation

Our professional installers will install your new windows and leave your home looking better than when they arrived.

Step 3

Ongoing customer service

Once your installation is finished, our customer care center continues to take care of you. Call them anytime with questions.

Get Your Free Estimate

Close-up of bay windows with potted plants inside.

Get a Free Bay Window Consultation from Our Experts

Thinking about adding or replacing a bay window? Our design consultants will walk you through sizing, configuration, and style options during your free consultation. With us, there’s no pressure: just helpful guidance.

Book Your Free Consult Now

Bay Window Installation by Trusted Professionals

We measure every replacement bay window and custom-build it to ensure a perfect fit. Our trained technicians follow a proven process to ensure your new bay window is secured, sealed, and oh-so-stunning.

View Our Process

Related Window Replacement Styles

Bow Windows about Bow Windows

Similar to bay windows but more curved than angular, these make a statement.

Explore Bow Windows Explore Bow Windows Bay Windows

Double Hung Windows about Double Hung Windows

Our most popular style of replacement window, custom made using robotics to ensure the best fit.

Explore Double Hung Windows Explore Double Hung Windows Bay Windows

Specialty Windows about Specialty Windows

Custom window shapes developed for your home, from half-circle to triangle and more.

Explore Specialty Windows Explore Specialty Windows Bay Windows

Sliding Windows about Sliding Windows

Convenient, classic, and fully customizable to your home.

Explore Sliding Windows Explore Sliding Windows Bay Windows

Expert resources

Dogs being walked as part of the Furry Scurry event in Denver

Window Nation Helps Dogs in Denver and Colorado Springs

Window Nation Cares sponsored Humane Colorado’s 2026 Furry Scurry, helping raise $605,000 to support animals in need across Denver and Colorado Springs.

read post Window Nation Helps Dogs in Denver and Colorado Springs read post

Why Homeowners Say Window Nation Is the Real Deal

Let’s look at a few of the reasons why Window Nation is the real deal when it comes to replacement windows and doors.

read post Why Homeowners Say Window Nation Is the Real Deal read post

Window Replacement With A Heart

Patricia's heart surgery put new windows out of reach until Window Nation Cares stepped in, donating beautiful, energy-efficient windows when she needed them most.

read post Window Replacement With A Heart read post

View All Posts Expert resources View All Posts

Bay Window Replacement FAQs

Are bay window replacements energy efficient?

Absolutely. Modern bay window replacements from Window Nation feature insulated glass, weatherstripping, and durable framing materials to help prevent drafts and improve overall energy performance in your home.
Can I replace a flat window with a bay window?

Yes, you can upgrade a flat window to a bay window! This type of replacement involves modifying the wall opening and adding structural support, which our trained installers handle with ease.
How long does a bay window replacement take?

Bay window replacements typically take longer than standard windows due to their size and structural support needs. In most cases, installation can be completed in one day, but complex projects may require additional time.
How much does a large bay window replacement cost?

Bay window replacements can vary in cost based on size, materials, glass upgrades, and the structural work needed for installation.
At Window Nation, each bay window is made to your home’s exact specifications, so there’s no standard price. We offer free in-home estimates and flexible window financing options to help fit your budget. Your design consultant will walk you through all available options and provide a detailed quote during your appointment.
How much space do I need for a bay window replacement?

Bay windows extend outward from your home’s exterior, typically by 12 to 36 inches. While they don’t require extra interior space, there must be enough room outside to accommodate the projection.
At Window Nation, our technicians take three measurements per window and calculate down to the millimeter to ensure a precise fit and an energy-efficient seal.
What is included in a typical bay window replacement?

A typical bay window replacement includes removing the old unit, inspecting the structure for damage, installing the new bay window with proper support, and sealing it for energy efficiency. We also offer customization options for materials and finishes.

Get a Free Estimate Get a Free Estimate Bay Windows