Top-Rated Window Pros Near You in Los Altos, CA

Select Windows Inc

Select Windows showroom opened in June of 1993 in Los Altos, CA. We have all major types of windows. Aluminum clad wood, all wood, vinyl, aluminum, thermal break aluminum, as well as thermal break windows are on display in our Downtown Los Altos showroom. Our staff can explain the benefits and disadvantages of each type of window. We carry some of the most respected brands in our showroom: Sierra Pacific, Weather Shield, Milgard, Velux, All Weather, Masonite, and Custom Mouldings Sash & Doors. We are th

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Pella Windows and Doors

When you choose Pella, you�re buying more than just a window or door. You�re getting the experience and service of local Pella professionals who are proudly committed to your satisfaction. See how Pella has remained passionate about creating a better view for you � for more than 85 years. Rest assured. Unlike some window and door companies, Pella will be here for you after the sale. We stand behind our quality products with some of the best warranties in the business and a national network of service speci

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General B Contractor

Thank you for considering Shota Mjavia for your next project! With over 10 years of experience and knowledge, we look forward to bringing your ideas to life. We offer the absolute finest in custom work for your home. Our skills & expert craftsmanship will provide a stunning finishing touch to any of your projects. Our expertise is in the initial design all the way through to installation. We pride ourselves in the quality of our work because we absolutely love what we do. Please reach out to us today so w

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Bruce Bauer Lumber & Supply

For over 70 years, Bruce Bauer Lumber and supply has operated under the core principle of providing high quality products and outstanding customer service. 4 generations and growing, we continue to sell high end windows, doors, lumber, hardware and other building materials to our neighbors in the Silicon Valley.

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Argonaut Window & Door, Inc.

*Authorized Dealer of Andersen Windows & Doors* For over 40 years, Argonaut Window & Door, Inc. has set the standard for knowledge, experience and professionalism in providing window and door solutions to Northern California. As the Bay Area’s leading window and door provider, Argonaut Window & Door seeks to meet and exceed the expectations of our diverse range of clients, including Architects, Builders and Homeowners. We partner with a variety of top quality manufacturers to tackle any style or custom d

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Alro Custom Drapery Installations, Inc
Ames Glass WIndow and Doors

Ames Glass WIndow and Doors offers a full line of residential and commercial glass window and door service.

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AMERICA ITALIANA

Since the beginning we have known that “Made in Italy,” is a line that is sought after... It was in 2001 when we began our exciting challenge to bring Italian made windows and doors to the United States. We took the opportunity to introduce the high European standards to the luxury American Market with our custom products. Since our debut all those years ago, we are proud of where we have come and what we have achieved. In our eyes every project is unique, which is why we collaborate with the client in or

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Heartwood Window and Door
J&M Windows and Glass, Inc.

Experienced window and door sales featuring Marvin, Andersen and Milgard windows. Family owned and operated for over 40 years we are here to serve homeowners, contractors, architects and other service professionals. We also install custom shower enclosures and mirrors. Starting in business as a traditional glass shop in 1976 by Mark's parents the company has grown to become one of the Bay Area's premiere window dealers. In addition to window sales we also excel in custom shower enclosure and mirror wo

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About Window Pros in Los Altos, CA

Upgrading or replacing windows in Los Altos requires detailed knowledge of the area’s unique needs, from architectural styles to local building codes. Many homes in Los Altos, especially in neighborhoods like North Los Altos and Loyola Corners, feature mid-century or custom designs that demand tailored window solutions to preserve their character. Additionally, with the Bay Area’s mild climate and focus on sustainability, energy-efficient windows—such as those that meet California’s stringent Title 24 energy codes—are a top priority for homeowners. Dual-pane or even triple-pane windows are popular choices to improve insulation, reduce energy bills, and minimize outside noise, especially for properties near busy thoroughfares like Foothill Expressway or El Camino Real.

Navigating Los Altos’ permitting requirements is another essential aspect of any window project. The City of Los Altos Building Division enforces strict guidelines, including egress window regulations for bedrooms, tempered glass requirements near walkways, and compliance with HOA design restrictions in certain neighborhoods. Working with an experienced professional ensures your project meets these standards while maintaining the aesthetic integrity of your home.

Budgeting for window replacement in Los Altos typically falls between $650 and $1,200 per window, depending on the size, material, and style. Whether you’re upgrading to sleek aluminum frames for a modern look or opting for wood-clad windows to match a historic home, choosing the right windows can enhance your property’s comfort, efficiency, and value.

Windows FAQs

The cost of professional window installation varies depending on the type of window, materials, and labor involved. On average, homeowners can expect to pay between $300 and $1,200 per window, including installation. Basic single-hung windows tend to be on the lower end of the scale, while custom, energy-efficient, or large-sized windows can push costs higher. Replacing multiple windows in a home can sometimes result in package discounts, so it’s worth discussing with your service provider. Be sure to ask for a detailed quote that breaks down labor and material costs for full transparency.

The timeline for installing new windows largely depends on the number of windows, their size, and whether it's a replacement or a new construction installation. On average:

  • Standard replacement windows can be installed in 1-2 hours each.
  • A full house installation generally takes 1-3 days for a professional team.

Custom-shaped windows, structural modifications, or unforeseen issues (like rotting wood) might extend the timeline. Discuss your project specifics with your contractor for a more accurate estimate.

When hiring a window contractor in Los Altos, you should ensure they have the proper credentials to operate in the area. Look for:

  • A valid state or local contractor’s license for window installation.
  • Liability insurance to protect your property.
  • Workers’ compensation insurance to cover employees on-site.

You can verify licenses through the relevant state licensing board for contractors. For example, you can check with the Contractors State License Board (CSLB) in California or double-check local regulations in Los Altos for specific requirements. Proper licensing ensures accountability and compliance with building codes.

Be cautious if you encounter any of the following red flags during your search for a window professional:

  • Lack of licensing or insurance: Reliable contractors will provide proof of their credentials without hesitation.
  • No written estimate: A verbal quote without documentation may lead to unexpected charges later.
  • Unrealistically low bids: A significantly lower price could indicate substandard materials or untrained labor.
  • High-pressure sales tactics: Legitimate contractors will give you time to consider options without coercion.
  • Vague contracts: Ensure project details, timelines, and costs are outlined clearly in any agreement.

Do thorough research and don’t hesitate to ask questions; trust your instincts if something feels off.

Yes, energy-efficient windows are often worth the investment in both the short and long term. They help reduce energy bills by minimizing heat loss during winter and blocking heat gain during summer. These windows typically feature:

  • Double or triple glazing for added insulation.
  • Low-E glass coatings to reflect heat.
  • Gas fills like argon for improved thermal performance.
  • Durable frames made from vinyl, fiberglass, or composite materials.

Though energy-efficient windows may cost more upfront, they often pay for themselves over time through energy savings and can add value to your home.

To get an accurate estimate for your window installation project:

  1. Determine your needs: What type of windows do you need (e.g., standard, custom, energy-efficient)?
  2. Measure windows: Have your contractor take exact measurements to ensure precision.
  3. Specify materials and features: Discuss the frames, glass, and hardware you prefer.
  4. Request multiple quotes: Compare at least 2-3 estimates from reputable contractors.
  5. Inquire about warranties: Ask which warranties cover labor and materials.

Ensure the estimate includes a breakdown of labor, materials, and potential disposal fees, so there are no surprises later.

Before hiring a window contractor, consider asking these important questions:

  1. Are you licensed and insured in Los Altos?
  2. Can you provide references or examples of past work?
  3. What warranties do you offer on materials and labor?
  4. What is the expected timeline for my project?
  5. How will you handle disposal of old windows?
  6. Are there any potential additional costs I should know about?

Getting clear answers to these questions will help you make an informed decision and ensure you’re working with a professional.

The main difference between full-frame replacement and pocket replacement lies in the scope of the project:

  • Full-frame replacement: The entire window—including the frame, trim, and sometimes surrounding studs—is removed and replaced. This method is ideal for old or damaged frames or if you want to change the size/shape of your window.

  • Pocket replacement: Only the window itself is replaced, leaving the existing frame intact. This is a quicker, less invasive option suitable for windows with solid, undamaged frames.

Discussing your project goals with a contractor can help determine the right option for your needs.

To ensure a smooth window installation process, follow these preparation tips:

  • Clear the area: Remove curtains, blinds, and decorations near windows.
  • Move furniture: Create clear access to the installation site.
  • Protect floors and valuables: Lay tarps or cover floors to guard against dust and debris.
  • Deactivate alarms: Temporarily disable window sensors in security systems.
  • Communicate with the contractor: Discuss parking and access arrangements for their team.

Being prepared can save time and reduce stress on installation day.

"Window Pros" offers a wide variety of window types to suit different needs and preferences, including:

  • Double-hung windows: Classic and versatile with two operable sashes.
  • Casement windows: Hinged on one side, ideal for ventilation.
  • Sliding windows: Easy to operate and space-efficient.
  • Bay and bow windows: Extend outward for added space and natural light.
  • Picture windows: Large, fixed windows to frame views.
  • Custom shapes: Tailored to unique sizes or architectural styles.

Whether you’re looking for energy efficiency, aesthetic appeal, or specific functionality, "Window Pros" can help you choose the right option for your home.

Reviews for Window Pros

Fogged Windows? Not Anymore!
Our upstairs bedroom windows were completely fogged over, making it impossible to enjoy the view. Window Pros replaced the panes in less than a day, and the cost was way less than I thought it would be. Now the room is brighter, and we don’t have to deal with drafty nights anymore!
Lisa C.
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Sealed Tight Before Winter
Living in Denver, I was worried my old window seals wouldn’t hold up for another winter. Window Pros came out the next day, gave me an honest assessment, and had everything fixed by the weekend. My heating bill has already dropped, and it’s only midseason!
Mike R.
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Crisis Averted, Fast!
A rock cracked our front bay window the night before hosting a big family dinner. Window Pros showed up that morning, replaced the glass quickly, and even cleaned up the mess. The house looked perfect by party time, and the price was super fair!
Karen D.
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Maria Vierra avatar

Maria VierraEditor

Maria Vierra is the lead designer at Vierra Fine Homes, bringing over two decades of experience in high-end residential design and construction. Her expertise and attention to detail ensure every project meets the highest standards of excellence, blending functionality with aesthetic appeal.

Brett Taylor avatar

Brett TaylorAuthor

Brett Taylor is the co-founder of The Builder Market and a visionary entrepreneur in the home services and construction industries. With a passion for innovation, Brett has played a pivotal role in revolutionizing how professionals and homeowners connect and collaborate.

This page was last updated on Apr 26, 2026, 10:46:41 AM