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Top Window Replacement & Installation in Redwood City, California Ranked
Upgrading your windows is one of the most impactful home improvement projects you can undertake in Redwood City. New window installation not only enhances your home's curb appeal and comfort but is also a critical step toward meeting California's strict energy efficiency standards and reducing your utility bills. This guide will help you understand the process, styles, and key considerations for a successful window upgrade, connecting you with the information needed to find qualified local specialists for your project.

Cal Coast Window & Door
5627 Stoneridge Dr Suite 305, Pleasanton, CA 94588
Cal Coast Window & Door is a window replacement and sliding glass door installation company based in San Jose, CA. They provide premium window and door installations, including sliding, French, bi-fold, and multi-slide doors, as well as moving glass walls and siding options. Serving residential clients across the San Francisco Bay Area, they have been transforming homes since 2007 with a focus on quality and craftsmanship.

Mr Window Replacement
4053 Nicolet Ave, Fremont, CA 94536
Mr Window Replacement is a window replacement company based in San Jose, CA. They provide window replacement services across multiple cities in the Bay Area, including Fremont, Castro Valley, and Palo Alto.

GV Home Solutions
280 Easy St APT 312, Mountain View, CA 94043
GV Home Solutions is a window replacement and sliding glass door installation company based in San Jose, CA. They provide expert installation services for high-quality windows and doors, serving residential customers in San Mateo, Santa Clara, and Alameda counties. Their team focuses on attention to detail and customer satisfaction throughout the entire process.

Bull`s Glass & Screen Center
1362 S De Anza Blvd, San Jose, CA 95129
Bull's Glass & Screen Center in San Jose, CA, specializes in custom glass solutions and window replacement services. They offer a wide range of products including shower enclosures, custom glass panels, mirrors, and various screen doors. With over 50 years of experience, they serve residential clients with tailored glass and screen installations and repairs.

Custom Exteriors, Inc
2142 Rheem Dr ste e, Pleasanton, CA 94588
Custom Exteriors, Inc is an exterior remodeling company based in Fremont, CA, serving the San Francisco Bay Area. They specialize in window replacement, sliding glass door installation, fiber cement siding, and entry door installation. The company works with premium brands like Infinity from Marvin and James Hardie, and their team includes AAMA Certified Master Installers who ensure precise and professional installations. Founded in 1997, Custom Exteriors has completed over 28,000 projects, emphasizing integrity and attention to detail throughout their work.
Understanding the Window Replacement Process
A professional window replacement project in Redwood City is a multi-step process designed to ensure a perfect fit, compliance with local codes, and a seamless finish. Knowing what to expect can help you plan effectively and communicate clearly with your installer.
Initial Consultation and Measurement The process begins with a detailed in-home assessment. A specialist will inspect your existing windows, discuss your goals for aesthetics, ventilation, and energy savings, and take precise measurements of every opening 1. This step is crucial for ordering custom windows that fit perfectly, as even minor measurement errors can lead to drafts, water leaks, and operational issues.
Navigating Permits in San Mateo County For most window replacement projects in Redwood City, a building permit from the County of San Mateo's Building Inspection Section is required 2. This ensures the new installations comply with state building codes, including the critical Title 24 energy standards. Your contractor will typically handle the permit application, which includes submitting project details and, sometimes, floor plans 3. Skipping this step can lead to problems during a future home sale or if an issue arises with the installation.
Installation Day Workflow A professional crew, often a two-person team, can typically install several windows in a single day 4. The standard procedure involves:
- Careful Removal: The old window is removed, and the opening is cleaned and inspected for any rot or damage that needs repair.
- Preparation and Flashing: The rough opening is prepared, and new flashing (a water-resistant material) is installed to create a critical moisture barrier-a key step for preventing leaks in Redwood City's climate 5.
- Setting and Sealing: The new window unit is placed into the opening, leveled, and shimmed to be perfectly square. It is then fastened securely and sealed around the exterior perimeter with high-quality caulk or sealant.
- Interior Finish and Insulation: The interior trim is installed or replaced, and the gap between the window frame and the wall is filled with insulation to prevent air infiltration 6.
Final Inspection and Cleanup After installation, the crew will test each window's operation, review the manufacturer's warranty with you, and ensure all old windows, packaging, and debris are removed from your property, leaving your home clean 3.
Popular Window Styles for Redwood City Homes
With an average home build year around 1967, Redwood City features a mix of traditional and modern architecture 7. The right window style can complement your home's design while improving functionality.
- Double-Hung Windows: A timeless and versatile choice, double-hung windows feature two sashes that slide vertically. This allows for flexible ventilation from the top, bottom, or both and makes cleaning the exterior glass from inside the home easy. They are a classic fit for many of Redwood City's traditional homes 8.
- Casement Windows: Hinged on one side and opened outward with a crank, casement windows offer excellent, full-height ventilation and unobstructed views. Their tight seal when closed makes them among the most energy-efficient operable styles, ideal for capturing bay breezes 9.
- Sliding Windows: Also known as gliders, these windows open horizontally on a track. They are a practical, space-saving solution for contemporary homes, walkways, or areas like patios where outward-swinging windows are not feasible 10.
- Bay and Bow Windows: These projecting windows create a dramatic focal point, adding architectural interest and valuable interior space. They are composed of a central fixed or operable window flanked by angled or curved side units, offering panoramic views and a sense of openness 11.
- Awning Windows: Hinged at the top and opening outward from the bottom, awning windows are perfect for providing ventilation even during light rain. They are often used in combination with larger fixed picture windows or in hard-to-reach places like above kitchen counters 12.
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Energy Efficiency: A Must for California's Title 24 Standards
Redwood City's climate, with its warm, dry summers and cooler, wetter winters, makes energy-efficient windows a smart investment for year-round comfort and cost savings 13. California's Building Energy Efficiency Standards (Title 24) are not just recommendations-they are mandatory for replacement projects 14. Here's what to look for:
Key Performance Metrics (NFRC Label) Every quality window will have a label from the National Fenestration Rating Council (NFRC). For Title 24 compliance, focus on two numbers:
- U-Factor: Measures the rate of heat loss. Lower is better. The general requirement for replacement windows is 0.30 or lower, indicating good insulation 15.
- Solar Heat Gain Coefficient (SHGC): Measures how much solar radiant heat is admitted. Lower is better for reducing cooling costs. The general requirement is 0.23 or lower 16.
Essential Energy-Saving Features
- Low-E Glass: A microscopically thin, invisible low-emissivity coating is essential. It reflects infrared heat (keeping heat out in summer and in during winter) and blocks a significant portion of damaging UV rays that fade furniture and flooring 17.
- Double or Triple-Pane Glass: Insulating glass units (IGUs) with two or three panes of glass are standard. The space between the panes is filled with an inert gas like argon or krypton, which drastically reduces heat transfer compared to single-pane windows 18.
- Frame Materials: The frame choice significantly impacts performance. Vinyl and fiberglass frames are top choices for their excellent thermal insulation, durability, and low maintenance, outperforming traditional aluminum frames which can conduct heat 19 20.
Understanding Window Replacement Costs
The investment for new windows in Redwood City varies based on the scope of your project, the materials selected, and the complexity of the installation. Here's a general breakdown of what homeowners can expect 21:
| Factor | Typical Cost Estimate |
|---|---|
| Per Window (Installed) | $500 - $1,200 for standard, mid-range vinyl or fiberglass windows 14 22. |
| Premium/Custom Windows | $1,200 - $2,500+ per window for high-end materials like fiberglass composites, wood-clad, or custom shapes and sizes 23. |
| Full Home Project (15-25 windows) | $8,000 - $25,000+ for a complete home upgrade with mid-range to premium options 24. |
Managing Your Investment While the upfront cost can be significant, new windows offer long-term value through energy savings, increased home value, and improved comfort. Homeowners should inquire about:
- Rebates and Tax Credits: Explore available incentives for installing energy-efficient products that exceed Title 24 requirements. Your window professional should be aware of current local and state programs 25.
- Financing Options: Many reputable installation companies offer financing plans to help manage the cost of a large project, making it easier to invest in higher-quality, more efficient windows 7.
Choosing the right partner for your window installation is as important as selecting the windows themselves. Look for experienced, licensed, and insured professionals who are familiar with Redwood City's permit process and Title 24 compliance. They can provide expert guidance tailored to your home's specific needs and architecture.
Frequently asked questions
Sources
Footnotes
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Window Replacement | City of Glendale, CA - https://www.glendaleca.gov/government/departments/community-development/neighborhood-services/code-compliance/window-replacement ↩
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Windows Replacement Permit | County of San Mateo, CA - https://www.smcgov.org/planning/windows-replacement-permit ↩
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Window Replacement in Redwood City, CA - The Home Depot - https://www.homedepot.com/services/l/ca/redwood-city/window-replacement/e57e696e1 ↩ ↩2
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How to Install a Replacement Window - https://www.youtube.com/watch?v=SIkXN8DJLUc&t=73 ↩
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What to Expect When Replacing Windows and Doors | Marvin - https://www.marvin.com/blog/what-to-expect-during-your-window-and-door-replacement-project ↩
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How to Install Replacement Windows - https://www.lowes.com/n/how-to/install-a-replacement-window ↩
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10 Best Window Replacement Companies in Redwood City, CA - https://todayshomeowner.com/near-me/california/redwood-city/windows/ ↩ ↩2
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Top 5 Popular Window Styles for California Homes - https://americanwindowconcepts.com/top-5-popular-window-styles-for-california-homes/ ↩
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Wood Windows Redwood City CA | Andersen Marvin Jeld ... - https://surewindows.com/ca/wood-windows-redwood-city ↩
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Affordable Sliding Windows Installation - https://redwoodcitywindow.com/redwood-city-sliding-windows-installation ↩
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Top 5 Popular Window Styles for California Homes - https://americanwindowconcepts.com/top-5-popular-window-styles-for-california-homes/ ↩
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Sierra Pacific Windows: 6 Reasons They're the Best Upgrade - https://www.toulmincabinetry.com/blog/why-choose-sierra-pacific-windows ↩
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Eco-Friendly Home Upgrades in Redwood City, CA - https://marylenenotarianni.com/blog/eco-friendly-home-upgrades-that-add-value-in-redwood-city-ca ↩
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Bay Area Energy-Efficient Windows Cost: A Complete Guide - https://truittandwhite.com/energy-efficient-windows-cost ↩ ↩2
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A Window and Door into Title 24 - https://westernwindowsystems.com/latest-news/a-window-and-door-into-title-24/ ↩
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Top Rated Windows Contractors for Redwood City, CA - https://www.diamondcertified.org/category/windows/ca/redwood-city/ ↩
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Six Tips For Choosing Energy-Efficient Windows - https://www.calcoastwindows.com/tips-for-choosing-energy-efficient-windows ↩
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Energy-Efficient Windows for Southern California Summers - https://www.americanvisionwindows.com/energy-efficient-windows-for-southern-california-summers/ ↩
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Choosing The Best Materials for New Windows - https://designerwindowsupply.com/choosing-the-best-materials-for-new-windows/ ↩
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Vinyl Windows Are the Best for California Climates - Select Hi Blog - https://selecthi.com/vinyl-windows-are-the-best-for-california-climates/ ↩
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2025 Window Replacement Cost in California - Modernize - https://modernize.com/windows/replacement-cost-calculator/california ↩
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How Much Do New Windows Cost? Bay Area Pricing Guide 2025 - https://www.insightglass.com/how-much-do-new-windows-cost/ ↩
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How Much Should You Pay For Replacement Windows? - https://windowdepotnashville.com/how-much-should-you-pay-for-replacement-windows/ ↩
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How Much Does Window Replacement Cost in California? - https://www.catexteriors.pro/window-replacement-cost-in-california/ ↩
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Windows Cost of Replacement Guide: Bay Area 2025 Pricing - https://www.insightglass.com/windows-cost-of-replacement-guide-bay-area-2025/ ↩