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Top Egress Window Replacement & Installation in Commerce City, Colorado Ranked
Adding an egress window or replacing an existing one is one of the most important safety upgrades you can make to your Commerce City home. These specially sized emergency escape and rescue openings are legally required for any basement room used as a bedroom, home office, or playroom. Beyond meeting building codes, a properly installed egress window provides peace of mind, increases natural light, and can significantly boost your home's value. This guide will help you understand the specific requirements in Commerce City and how to find qualified local professionals to ensure your project is safe, legal, and built to last.

HomeStrong
6398 Franklin St, Denver, CO 80216
HomeStrong is a family-owned foundation repair and basement waterproofing contractor based in Denver, CO. They provide comprehensive services including foundation repair, basement waterproofing, crawl space repair, concrete repair, and egress window installation. Their expertise includes proven waterproofing techniques and concrete crack repair to protect and enhance residential properties.

Top Star Egress & Services
denver
Top Star Egress & Services is a Denver, CO-based company specializing in egress window installation and window replacement. They provide code-compliant, safe, and stylish solutions including window well replacement, concrete cutting, core drilling, and excavation services. With over 10 years of experience and full licensing and insurance, they serve homeowners throughout Denver and surrounding areas.

ItIsWell Egress
denver
ItIsWell Egress is a window repair and replacement company based in Denver, CO, specializing in egress basement windows and window well installations. They provide services including window well replacement, basement window replacement, and window well covers, serving the Denver Metro area. The company emphasizes quality workmanship and customer satisfaction through clear communication and professional service.

Liftech Concrete Leveling & Foundation Repair
12870 W Alameda Pkwy, Lakewood, CO 80228
Liftech Concrete Leveling & Foundation Repair is a Denver, CO-based contractor specializing in foundation repair, concrete leveling, waterproofing, and egress window installation. They handle residential and commercial projects, offering comprehensive solutions including concrete lifting and basement waterproofing. Liftech is known for using high-quality repair methods and ensuring compliance with local building codes for egress windows.

Basement Windows Of Denver
denver
Basement Windows Of Denver is a window replacement and egress window contractor based in Denver, CO. They specialize in installing code-compliant basement and egress windows with stamped engineering approval. The company offers custom window designs with a focus on safety, aesthetics, and quality craftsmanship.
Understanding Egress Window Codes in Commerce City
In Commerce City, all egress window installations and replacements must comply with the International Residential Code (IRC), which has been adopted locally 1 2. The primary purpose of these codes is to provide a safe, unobstructed exit in case of a fire or other emergency, particularly from below-grade sleeping areas. The rules are strict for a reason: they save lives.
For a basement egress window to be legal in Commerce City, it must meet several precise dimensional requirements 3 4 5:
- Minimum Net Clear Opening: 5.7 square feet (5.0 square feet if the window opens directly to ground level).
- Minimum Opening Dimensions: At least 20 inches in width and 24 inches in height.
- Maximum Sill Height: The bottom of the opening must be no more than 44 inches from the finished floor inside the room.
These specifications ensure that both occupants can escape and that emergency responders can enter with their equipment. It's not just about the window itself; the entire escape path, including any window well, must be clear and accessible.
When is an Egress Window Required?
Many homeowners are unsure if their basement project triggers the need for an emergency egress opening. In Commerce City, the requirement applies to any "habitable" room in the basement 4 6 7.
You need an egress window if you are:
- Converting a basement space into a legal bedroom.
- Creating a home office, den, or playroom in the basement where people will regularly spend time.
- Finishing a basement that includes any sleeping area.
- Building a new home with habitable basement space.
- Replacing an existing basement window in a bedroom that does not meet current egress codes.
Essentially, if you are creating a comfortable living space where someone could become trapped, an egress window is not just a good idea-it's the law. This requirement also applies to habitable attic spaces 4 7.
The Crucial Role of Window Wells
Since basement windows are below ground, a window well is almost always necessary to create the required escape area. The well must be large enough to allow the egress window to open fully without obstruction. Commerce City code also has specific rules for wells 3 8 9:
- If the well is deeper than 44 inches, it must have a permanently attached ladder or steps for climbing out.
- The well must provide the minimum clear opening dimensions required for the window.
- Drainage is critical to prevent water from pooling and flooding the window or basement.
A professional installer will ensure the well is properly excavated, lined, and drained, which is vital for preventing moisture problems in your basement.
Navigating Commerce City Permits and Inspections
One of the most critical steps in your egress window project is obtaining the proper permits from the City of Commerce City Building Department. Skipping this step can result in fines, forced removal of the work, and problems when you sell your home 1 10 11.
The typical permit process involves:
- Contact the Building Department: Verify the exact local requirements and obtain the necessary application forms. It's always wise to confirm the latest rules before starting any work 2 11.
- Prepare Documentation: This usually includes a site plan, construction drawings showing the window and well details, and a clear scope of work.
- Submit and Pay Fees: Submit your application package and pay the associated permit fees, which typically range from $50 to $500 depending on the project's complexity 3 10.
- Schedule Inspections: The city will require inspections at key stages, such as after the rough framing/opening is created and after the final installation is complete 10 2.
Working with a knowledgeable local pro means they will often handle this entire permit process for you, ensuring all paperwork is correct and inspections are scheduled properly.
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Replacement vs. New Installation
The scope of your project will significantly impact the process, cost, and permit requirements.
New Egress Window Installation: This involves cutting a new opening in your home's concrete foundation wall. It is a major construction project that requires engineering consideration, precise concrete cutting, structural support (lintel), and extensive excavation for the window well. This always requires a permit in Commerce City 1 12.
Egress Window Replacement: If you are replacing an existing window within its current frame, the process may be simpler. However, you must ensure the new window unit itself provides the required net clear opening dimensions (5.7 sq. ft., 20"x24"). Even a replacement must allow for emergency escape, and if you are altering the rough opening size, a permit is likely required 12. Always check with the Building Department to be sure.
Understanding Project Costs
The total cost for an egress window project in Commerce City varies based on whether it's a new installation or a replacement, the type of window and well materials, and the labor complexity involved.
- Permit Fees: As noted, plan for $50 to $500 for the city permit 3 10.
- Window & Well Materials: The window unit itself (often a casement or sliding style that meets size requirements) and a prefabricated or custom-built window well can range from $300 to over $1,000 for the materials alone 13 14.
- Labor Costs: This is where the largest variation occurs. For a full new installation involving concrete cutting, excavation, and well construction, labor can range from $1,500 to $3,000 or more per window 14 15. A simpler replacement into an existing compliant opening will be less.
It's important to get detailed quotes that break down material and labor costs. The cheapest option isn't always the best when it involves the structural integrity of your foundation and the safety of your family.
Choosing the Right Professional for the Job
This is not a standard DIY project. Installing an egress window requires expertise in concrete work, structural knowledge, waterproofing, and a thorough understanding of local building codes.
Look for a professional who:
- Is licensed and insured to work in Commerce City.
- Has specific, verifiable experience installing egress windows in basement foundations.
- Understands the local permit process and will pull permits on your behalf.
- Provides a detailed written estimate covering all aspects of the job: demolition, concrete work, window installation, well construction, drainage, and cleanup.
- Can explain the code requirements and how their plan will meet them.
- Offers a strong warranty on both their workmanship and the products they install.
Taking the time to find a qualified expert is the best way to ensure your egress window project is completed safely, correctly, and adds lasting value and security to your Commerce City home.
Frequently asked questions
Sources
Footnotes
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Building Code Provisions in the Municipal Code | City of ... - https://www.c3gov.com/Business-Development/Building-Permits-Inspections/Step-1-Project-Design/Building-Code-Provisions-in-the-Municipal-Code ↩ ↩2 ↩3
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ARTICLE IV. - INTERNATIONAL CODES | Municipal Code | Commerce City, CO - https://library.municode.com/co/commerce_city/codes/municipal_code?nodeId=COOR_CH5BUBURE_ARTIVINCO ↩ ↩2 ↩3
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Understanding Egress Windows: Safety and Legal Requirements in Colorado | Lucas Remodeling - https://lucasremodeling.net/understanding-egress-windows-safety-and-legal-requirements-in-colorado/ ↩ ↩2 ↩3 ↩4
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Egress Windows Building Codes, Regulations, and ... - https://basementwindowsofdenver.com/egress/building-code-regulations-specifications/ ↩ ↩2 ↩3
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IRC Codes In Colorado | CO Egress Window Requirements - https://windowwellexperts.com/irc-codes/colorado/ ↩
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Does An Egress Window Have To Be In The Basement Bedroom? - https://www.thegreategressco.com/blogs/egress-window-blog/does-an-egress-window-have-to-be-in-the-basement-bedroom ↩
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Basement Egress Windows: Code Requirements & Options - https://window-gurus.com/blog/basement-egress-windows-safety-requirements-and-options/ ↩ ↩2
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Basement Egress Window Requirements in Colorado Springs, CO - https://wickhamsworkbench.com/services/basement-finishing/egress-windows/ ↩
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Everything You Need to Know About Basement Egress ... - https://www.choicecityhs.com/blog/everything-you-need-to-know-about-basement-egress-windows-in-northern-colorado ↩
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Egress Window Permits: A Contractor's Guide - https://www.permitflow.com/blog/egress-window-permit ↩ ↩2 ↩3 ↩4
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Egress Window Requirements - EVstudio - https://evstudio.com/understanding-egress-window-and-door-requirements/ ↩ ↩2
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Egress Window Requirements in Denver - https://usegress.com/2023/03/28/egress-window-requirements-in-denver/ ↩ ↩2
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Egress Basement Windows Denver - https://alpinecompanies.com/services/interior-services/egress-basement-windows-denver/ ↩
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How Much Does an Egress Window Cost to Install? - https://www.bobvila.com/articles/egress-window-cost/ ↩ ↩2
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How Much Does Egress Window Installation Cost? (2025) - https://homeguide.com/costs/egress-window-installation-cost ↩