How Long Does Egress Window Installation Take in Denver? (Realistic Timeline)

Why Denver Homeowners Ask About Egress Window Timelines

If you’re converting a basement into a legal bedroom in Denver, you already know that an egress window isn’t optional—it’s required by the International Residential Code (IRC) as adopted by Colorado. But the question we hear most at Affordable Egress Co. isn’t “how much does it cost?”—it’s “how long will this take?”

Whether you’re scheduling around a renovation deadline, a growing family, or a rental conversion, understanding the realistic timeline for egress window installation in Denver helps you plan without surprises. Since 1999, we’ve installed thousands of egress windows across the Front Range, and in most cases, we’re in and out in a single day.

Typical Timeline: Most Denver Egress Installations Are One-Day Jobs

For the vast majority of basement egress window installations, Affordable Egress Co. completes the entire project in one working day. Here’s what that day looks like:

• Morning (7:00 AM – 9:00 AM): Setup, safety prep, and concrete cutting. We use low-vibration saws to minimize dust and noise inside your home.
• Mid-morning (9:00 AM – 12:00 PM): Excavation outside, removal of concrete and dirt. Denver’s clay-heavy soil (common along the Front Range) requires careful shoring to prevent collapse.
• Lunchtime (12:00 PM – 1:00 PM): Window frame installation and rough-in. We check for level, square, and proper slope for drainage.
• Afternoon (1:00 PM – 4:00 PM): Window well installation, backfilling, and sealing. We use galvanized steel or poly wells rated for Colorado’s freeze-thaw cycles.
• Late afternoon (4:00 PM – 5:30 PM): Final window installation, caulking, and cleanup. You get a fully functional egress window by dinner time.

This one-day timeline applies to standard egress installations—where we’re cutting a new opening into an existing concrete foundation. If you’re replacing an old window well or upgrading an existing window, the timeline can be even shorter.

What Can Delay an Egress Window Installation in Denver?

While the majority of our jobs are same-day, a few local factors can extend the timeline. Knowing these upfront helps you plan realistically:

1. Denver’s Soil and Rock Conditions

Denver sits on a mix of clay, sand, and—especially in areas like Highlands Ranch or Castle Rock—hard sandstone or caliche. If our crew hits rock shelf during excavation, we may need specialized equipment. This can add 2–4 hours, but we rarely need a second day. We’ll let you know during your free estimate if soil conditions look tricky based on your neighborhood.

2. Basement Wall Thickness and Reinforcement

Homes built before 1980 often have 8-inch or 10-inch poured concrete walls. Newer homes may have 12-inch walls with rebar grids. Cutting through thicker walls with steel reinforcement takes more time and precision. We account for this in our initial assessment, so you won’t get a surprise delay on install day.

3. Utility Line Locations

Gas, water, or electrical lines running near the cut area require careful hand-digging and coordination with utility companies. In Denver, we always call 811 for locates before any excavation. If a utility line is in the way, we may need to reroute the window location slightly—adding an extra half-day to the project. This is rare, but we plan for it.

4. Window Well Size and Type

Standard window wells (18–24 inches deep) install quickly. However, if you need a deep well for a larger window, or if we’re installing a custom galvanized or poly well with a built-in drain, that adds about an hour. We’ll discuss your options during the free estimate so there are no surprises.

Denver Building Code Requirements That Affect Your Timeline

Understanding local code helps you see why some installations take longer than others. Denver and most Front Range cities (Aurora, Lakewood, Littleton, etc.) follow the 2021 IRC with Colorado amendments. Key requirements:

• Minimum opening size: 5.7 square feet of net clear opening (for ground floor egress).
• Minimum width: 20 inches wide.
• Minimum height: 24 inches tall.
• Sill height: No more than 44 inches above the floor.
• Window well clearance: If the well is deeper than 44 inches, it requires a permanent ladder or steps.

Because these specs are strict, we pre-measure everything during your free estimate. That means no “oops, the window doesn’t fit” delays on install day. We also handle permit coordination with Denver’s permitting office—another step that saves you time.

How to Prepare for Your Egress Window Installation Day

To keep your installation on schedule, here’s what we recommend:

1. Clear the work area. Move furniture, boxes, and anything stored against the basement wall where the window will go. Our crew needs about 4 feet of clearance inside.
2. Secure pets and kids. We use power tools and open pits. Keeping pets in a separate room or outside helps everyone stay safe.
3. Plan for dust. Even with low-vibration cutting, some concrete dust is inevitable. We seal off the area with plastic sheeting, but you may want to cover nearby furniture.
4. Arrange parking. Our crew needs close access to the exterior wall. If you have a narrow driveway, let us know during the estimate so we can plan equipment placement.

Why Affordable Egress Co. Delivers Same-Day Results

Since 1999, we’ve refined our process to handle Denver’s unique conditions—clay soil, freeze-thaw cycles, and varying foundation types. Our crews carry all necessary equipment on each truck, from concrete saws to window wells. We don’t subcontract, so we control the timeline from start to finish.

Most importantly, we know that your time matters. A basement bedroom conversion is a big project, and the egress window is often the critical path. When we say “one day,” we mean it—barring the rare utility or rock issue, you’ll have a fully functional, code-compliant egress window before sundown.

Ready to Plan Your Egress Window Installation?

If you’re wondering how long egress window installation takes in Denver for your specific home, the best first step is a free on-site estimate. We’ll measure your basement, check soil conditions, review your window well options, and give you a firm timeline—no guesswork.

At Affordable Egress Co., we’ve been helping Denver homeowners add light, safety, and value to their basements since 1999. Contact us today to schedule your free estimate and see how a same-day installation fits into your renovation plans.