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Top Egress Window Replacement & Installation in Trenton, New Jersey Ranked

Installing an egress window is a critical home improvement that transforms a basement into a safe, legal, and livable space. These specialized windows provide a vital emergency escape route and are required by building code for any basement room used as a bedroom. For Trenton homeowners, navigating the specific size requirements, permit process, and installation details is essential. This guide will help you understand the local requirements and connect you with qualified professionals who can ensure your project meets all safety and legal standards.

Jamison Basement Waterproofing

Jamison Basement Waterproofing

1429 Ulmer Ave b, Oreland, PA 19075

Jamison Basement Waterproofing is a Philadelphia, PA-based contractor specializing in basement waterproofing, foundation repair, and egress window installation. Serving the Greater Philadelphia area and tri-state region, they provide moisture control, sump pump installation, crawl space encapsulation, and masonry services. With over 35 years of experience, they focus on creating dry, healthy, and energy-efficient basements and crawl spaces for homeowners.

5.0
1.5k Reviews
Basement Gurus

Basement Gurus

431 Rhawn St, Philadelphia, PA 19111

Basement Gurus is a basement waterproofing contractor based in Philadelphia, PA, specializing in waterproofing, mold remediation, and basement finishing. They provide solutions such as sump pumps, French drains, and crawl space encapsulation to keep basements dry and safe. Their services cater primarily to homeowners looking to protect and improve their residential properties.

4.8
366 Reviews
Worthington Foundation Authority

Worthington Foundation Authority

601 Gawain Rd, Plymouth Meeting, PA 19462

Worthington Foundation Authority is a Philadelphia, PA-based contractor specializing in foundation repair, basement egress installation, and waterproofing. They provide comprehensive solutions including large, high-velocity drainage systems and sump pumps designed to keep basements dry and foundations secure. With over 65 years of experience serving the Delaware Valley, they focus on creating healthy, dry environments for homeowners.

4.9
73 Reviews
Basements Love Us

Basements Love Us

3653 Salmon St, Philadelphia, PA 19134

Basements Love Us is a family-owned and operated contractor based in Philadelphia, PA, specializing in basement waterproofing, mold remediation, structural repairs, and egress window installation. They serve residential clients across New Jersey, Eastern Pennsylvania, and Delaware, offering comprehensive solutions including sump pump and French drain installation, foundation repair, and crawl space encapsulation. The company is fully licensed and insured, with over 20 years of combined experience and a commitment to quality and customer satisfaction.

4.0
8 Reviews
Basements Love Us

Basements Love Us

519 A Cinnaminson Ave, Palmyra, NJ 08065

Basements Love Us is a family-owned and fully licensed contractor based in Philadelphia, PA, specializing in basement waterproofing, mold remediation, structural repairs, and egress window installation. They serve residential clients across New Jersey, Eastern Pennsylvania, and Delaware, offering comprehensive solutions including crawl space encapsulation, sump pump and French drain installation, and foundation repairs. Their expertise includes the use of carbon fiber straps for wall reinforcement and certified basement underpinning services.

3.6
76 Reviews
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Understanding Egress Window Requirements in Trenton

An egress window is more than just a large basement window; it's a legally defined emergency exit. The International Residential Code (IRC), adopted by New Jersey, sets strict minimum standards for these emergency escape and rescue openings. In Trenton, compliance with these codes is enforced through the local permit and inspection process to ensure occupant safety 1 2.

The primary purpose is clear: to allow residents to exit and emergency responders to enter during a crisis like a fire. A standard basement hopper window does not qualify. The installation involves creating a new opening or significantly enlarging an existing one in your foundation wall, which is a major structural modification requiring professional expertise.

Key Code Dimensions for the Window Itself

For a window to be considered a legal egress in Trenton, it must meet the following minimum dimensions, which are consistent across New Jersey 2 3 4:

  • Minimum Opening Area: The clear, unobstructed opening must be at least 5.7 square feet (820 square inches). For windows at or below ground level (grade), the minimum is slightly less at 5.0 square feet 5 6.
  • Minimum Opening Height: The opening must be at least 24 inches high.
  • Minimum Opening Width: The opening must be at least 20 inches wide.
  • Maximum Sill Height: The bottom (sill) of the openable area cannot be more than 44 inches from the finished floor inside the room. This ensures occupants, including children and elderly individuals, can easily climb out.
  • Operation: The window must open fully from the inside without the use of keys, tools, or special knowledge. Casement and slider windows are common choices that meet this requirement 4.

Crucial Note for Bedrooms: Each bedroom in a finished basement must have at least one compliant egress window. This is non-negotiable for creating a legal sleeping space 5 7.

The Essential Egress Window Well

Since Trenton basement windows are typically below ground, an egress window must be paired with a well. This well provides the external space needed to meet the size requirements and allows for escape. The well itself has its own code specifications 2 3:

  • Minimum Well Area: The well must provide a minimum of 9 square feet of horizontal area (e.g., 3 feet by 3 feet).
  • Minimum Well Projection: The well must extend at least 36 inches outward from the foundation wall, providing enough room for a person to stand or maneuver.
  • Ladder or Steps: If the depth of the well exceeds 44 inches, a permanently attached ladder or steps are required. The ladder must not encroach on the minimum required dimensions of the well's horizontal area.

Proper drainage at the bottom of the well is also critical to prevent water from pooling and leaking into your basement. A professional installer will ensure the well is properly excavated, lined, and connected to your home's drainage system.

The Trenton Permit Process: A Step-by-Step Guide

Installing an egress window is not a DIY project you can start without approval. Because you are altering the structural foundation and creating a new means of egress, a building permit from the City of Trenton is mandatory 1 8. Working without a permit can result in fines, forced removal of the work, and problems when you sell your home.

Here is a typical permit process for an egress window installation in Trenton:

  1. Application: You or your contractor will submit a permit application to the Trenton Department of Housing and Economic Development (or the relevant construction office). It's always wise to verify the exact department with the city 1.
  2. Plan Submission: Detailed plans must be included, showing the proposed window's location on the foundation, its exact dimensions, the well design, and drainage details. These plans demonstrate code compliance.
  3. Plan Review: City officials will review the submitted plans to ensure they meet all IRC and local requirements.
  4. Inspections: Once the permit is issued and work begins, the city will require scheduled inspections. These typically include a rough framing inspection (after the opening is cut and framed), an insulation inspection, and a final inspection to approve the completed installation 1 9.
  5. Certificate of Occupancy (C.O.): If you are creating a new legal bedroom, you will likely need a final Certificate of Occupancy for that space, which is issued after all final inspections pass 10.

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Factors Influencing Egress Window Installation Cost

The total cost for a full egress window installation in the Trenton area can vary widely based on several factors. While general estimates for New Jersey range from $1,500 to $5,000 or more, your specific project cost will depend on the following 8 11 12:

  • Window Type and Quality: Casement windows are often the preferred choice for egress due to their full, easy opening mechanism. The material (vinyl, fiberglass, wood-clad) and energy efficiency ratings (double-pane, Low-E coatings) will affect price.
  • Excavation and Labor: This is a labor-intensive job. Factors include the depth of excavation, soil conditions, proximity to utilities, and whether the exterior is landscaped or paved.
  • Window Well Size and Material: A larger, deeper well requires more excavation and material. Wells can be made from corrugated metal, polymer, or masonry block, each with different cost points and durability.
  • Foundation Work: Cutting through poured concrete or concrete block foundations requires specialized equipment and skill. Reinforcing the new opening with a proper header is a critical structural step.
  • Drainage System: Installing a proper drain at the base of the well, connected to a sump pump or existing drainage, is essential to prevent water issues.
  • Interior and Exterior Finishing: Costs include repairing and finishing the interior wall around the new window, as well as exterior grading and landscaping restoration.
  • Permit Fees: The City of Trenton will charge fees for the permit application, plan review, and inspections.

Choosing the Right Installation Professional

Given the structural, safety, and legal complexities, selecting an experienced and licensed contractor is paramount. Look for professionals who specialize in egress window installations and are familiar with Trenton's specific permit process. They should be able to pull the necessary permits on your behalf, provide detailed plans, and guarantee their work will pass city inspections. A reputable pro will also handle all aspects of the job-from excavation and waterproofing to the final trim work-ensuring a seamless and code-compliant result.

Disclaimer: The information provided here is a general guide. Building codes and local requirements can be updated. Always check directly with the City of Trenton Construction Office for the most current specific local requirements and permit processes before starting any work 1 8.

Frequently asked questions

Sources

Footnotes

  1. Construction Code Communicator - NJ.gov - https://www.nj.gov/dca/codes/publications/pdf_ccc/CCC_Winter_2018.pdf 2 3 4 5

  2. New Jersey Basement Egress Window Code - https://www.thegreategressco.com/pages/new-jersey-egress-requirements 2 3

  3. New Jersey Egress Window Code & Requirements - https://hargravecontractors.com/our-blog/f/new-jersey-egress-window-code-requirements-everything-you-need 2

  4. New Jersey Egress Windows - Redi-Exit - https://www.redi-exit.com/pages/new-jersey 2

  5. Building Planning Codes - https://www.egresssolutionsnj.com/building-planning-codes/ 2

  6. Basement Egress Windows: Code Requirements & Options - https://window-gurus.com/blog/basement-egress-windows-safety-requirements-and-options/

  7. New Jersey Basement Escape Window Installation | Egress Windows - https://www.blueumbrellawaterproofing.com/basement-waterproofing/solutions/basement-excape-windows/

  8. How to replace windows in New Jersey? | AHC NJ - https://njahc.com/how-to-replace-windows-in-new-jersey/ 2 3

  9. Minimum standards for egress window codes across 'NY', 'CT' and 'NJ' based on Section R310. - https://egresspros.com/egress-window-code-requirements-in-new-york-connecticut-new-jersey-2025-what-every-homeowner-should-know/

  10. Englewood Basement Permits: Basics for Finishing Right - https://brandonkass.com/blog/finishing-a-basement-in-englewood-permit-basics

  11. Converting a Basement Window to Egress: A Guide to Retrofits - https://www.egresssolutionsnj.com/converting-a-basement-window-to-egress-a-guide-to-retrofits/

  12. Basement Egress Windows Explained - https://www.kehlwindowanddoor.com/basement-egress-windows