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Top Egress Window Replacement & Installation in Castle Rock, Colorado Ranked
Adding an egress window or replacing an existing one is a critical home improvement project that enhances safety, increases living space, and boosts property value. In Castle Rock, these installations are governed by specific building codes to ensure they provide a reliable emergency escape route. This guide explains the local requirements, process, and considerations for egress window work, helping you understand what's involved in finding a qualified professional for your basement egress or emergency egress window project.

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.

US Egress LLC
denver
US Egress LLC is a Denver, CO-based contractor specializing in egress window installation. They provide full-service solutions including permitting, structural drawings, excavation, installation, and final inspection to ensure code-compliant basement escape windows. Their expertise includes local building codes and the installation of brick and timber window wells.

Great Escape Egress
8220 N Saguaro Ridge Rd, Parker, CO 80138
Great Escape Egress is a licensed and insured egress window contractor based in Denver, CO, specializing in egress window installations since 2006. They offer services including window well replacement, custom window wells, and water mitigation to improve home safety and aesthetics. With over 20 years of skilled trades experience, they manage projects year-round, handling permits and inspections with clear communication.
Understanding Egress Window Requirements in Castle Rock
Egress windows are not just any basement windows; they are legally mandated emergency exits for any room classified as a bedroom or sleeping area. This is especially important for finishing basements in Castle Rock homes, as creating a legal bedroom requires a compliant emergency egress opening 1 2. The requirements are based on the International Residential Code (IRC), which has been adopted with local amendments in Colorado and Douglas County 3 4.
The core purpose is to allow occupants to escape and emergency responders to enter during a crisis. Therefore, the specifications are precise and non-negotiable. Failure to meet these codes can result in failed inspections, prevent you from legally listing a bedroom, and, most importantly, compromise safety.
Key Code Specifications for Egress Openings
Before contacting professionals, familiarize yourself with these fundamental requirements. A compliant egress window assembly in Castle Rock must meet the following criteria 1 3 4 5:
- Minimum Clear Opening: The net clear opening (the space you can actually climb through) must be at least 5.7 square feet. An exception allows for 5.0 square feet if the window opens directly to ground level at grade.
- Minimum Dimensions: The opening must be at least 20 inches wide and 24 inches high. These are minimums; the clear opening area is the governing factor.
- Maximum Sill Height: The bottom of the clear opening cannot be more than 44 inches above the finished floor of the room. This ensures it is low enough for most people to climb out.
- Operation: The window must be operable from the inside without the use of tools, keys, or special knowledge. It should open fully and easily to provide the required clear opening.
The Complete Installation Process: From Plan to Final Inspection
Installing an egress window is a multi-step project that involves careful planning, permitting, and skilled construction work. It's more complex than a standard window replacement because it typically involves cutting through a concrete foundation wall.
1. Planning and Design
This initial phase involves choosing the optimal location, considering interior layout and exterior obstacles like utilities or landscaping. You'll need to decide on the type of egress window (e.g., casement or sliding) and the size of the accompanying window well. Plans must detail the window's size, the well's dimensions and depth, the location of any required ladder or steps, and how the foundation will be structurally supported during and after the cut 6.
2. Securing a Building Permit
This step is mandatory. You cannot legally install an egress window in Castle Rock without a permit from the Town of Castle Rock Building Department. The permit process ensures the project meets all safety and building codes 6 7.
- Application: Submit your detailed plans along with the permit application.
- Plan Review: Building and engineering officials will review the plans, paying special attention to the structural implications of cutting the foundation. This review is crucial for safety 6.
- Fees: Permit fees vary based on the project's valuation and complexity, typically ranging from $50 to $500 6 8.
3. Professional Installation
Once the permit is secured, the physical work begins. A qualified contractor will:
- Excavate the exterior to expose the foundation wall.
- Cut an opening in the concrete foundation, often using shoring to support the structure during the work.
- Install the window and seal it properly to prevent water intrusion.
- Construct the window well, which must be large enough to allow the egress window to open fully. For wells deeper than 44 inches, permanent steps or a ladder are required 5 9 10.
- Address drainage around the well to direct water away from the foundation.
4. Required Inspections
The building department will require inspections at critical stages, usually a rough-in inspection (after the hole is cut and before the interior is finished) and a final inspection (once everything is complete). Passing these inspections is necessary to close out the permit and certify the work as code-compliant 6.
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Window Wells and Safety Accessories
An egress window well is required if the bottom of the window is below the surrounding ground level. The well isn't just a hole in the ground; it has its own set of requirements to ensure it functions as part of the emergency escape system 9 11:
- Size: The well must provide enough clearance for the window to open fully to its required minimum dimensions. Common guidelines call for a minimum horizontal projection (the distance from the foundation wall out into the yard) of 36 inches.
- Area: Many codes, including those referenced in the Douglas County guide, require a minimum of 9 square feet of horizontal area within the well 5.
- Ladders or Steps: If the depth of the window well exceeds 44 inches, code mandates an installed, permanent ladder or steps for escape. These must be corrosion-resistant and securely attached 5 10.
- Security Bars: If you install security bars over an egress window, they must be equipped with approved quick-release mechanisms that operate without a key or tool from inside 4.
Cost Considerations for Egress Window Projects
The total cost for an egress window replacement or new installation in Castle Rock can vary widely based on the window type, the depth of excavation, the need for structural shoring, and the materials used for the well. It's important to budget for the entire project scope, not just the window unit 8 12.
- Window and Basic Installation: The cost for the egress window itself and the labor to install it typically ranges from $1,000 to $4,000.
- Structural Work: Cutting through the foundation wall is specialized work. Additional costs for structural engineering, shoring, and reinforcing the new opening can add $500 or more to the project.
- Window Well and Drainage: A prefabricated or masonry well, along with proper gravel drainage, is a significant part of the cost, especially for deeper installations.
- Total Project Cost: When you combine all elements-permit, window, labor, structural work, well, and ladder-homeowners can expect a total project cost in the range of $1,500 to $5,000 or more for a full, code-compliant installation 6 8 12.
Choosing the Right Professional for the Job
Given the structural and safety implications, selecting a skilled and knowledgeable contractor is paramount. Look for professionals with specific experience in egress window installations in the Castle Rock area. They should be intimately familiar with local building codes, the permit process with the Town of Castle Rock, and the best practices for foundation work and waterproofing. A reputable contractor will handle the permit application and inspections as part of their service, ensuring a smooth process from start to finish.
Frequently asked questions
Sources
Footnotes
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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
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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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Egress Windows Building Codes, Regulations, and ... - https://basementwindowsofdenver.com/egress/building-code-regulations-specifications/ ↩ ↩2
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IRC Codes In Colorado | CO Egress Window Requirements - https://windowwellexperts.com/irc-codes/colorado/ ↩ ↩2 ↩3
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BASEMENT FINISH REQUIREMENT GUIDE Current Codes - https://www.douglas.co.us/documents/basement-finish-guide.pdf/ ↩ ↩2 ↩3 ↩4
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Egress Window Permits: A Contractor's Guide - PermitFlow - https://www.permitflow.com/blog/egress-window-permit ↩ ↩2 ↩3 ↩4 ↩5 ↩6
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Egress Window Safety Check For Colorado Homes - https://windowwellexperts.com/blog/egress-window-safety-colorado/ ↩
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Basement Egress Window: Costs, Installation & Requirements - https://brogawindows.com/blog/basement-egress-window-guide ↩ ↩2 ↩3
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Egress Window Requirements - EVstudio - https://evstudio.com/understanding-egress-window-and-door-requirements/ ↩ ↩2
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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 ↩ ↩2
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Egress Window Well Requirements in Denver, Colorado - https://bestpricehomeinspection.com/egress-window-well-requirements-denver-colorado/ ↩
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Egress Window Requirements in TN: What You Need to Know - https://mywindowsforlife.com/egress-window-requirements-in-tn/ ↩ ↩2