Top-Rated Window Pros Near You in Diamond Bar, CA

Build Visto

Wholesale Building Supply Distributor of Windows, Doors and Glass.

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TAHADA Construction
Available by AppointmentAvailable by Appointment
Committed Quality ResultsCommitted Quality Results
Established inEstablished in
Offers Commercial ServicesOffers Commercial Services
On-time CommitmentOn-time Commitment

Hi, I’m TAHADA Construction—the “yes, we actually return phone calls” company your neighbor keeps bragging about. We’ve been turning “Uh-oh, we need a contractor” moments into high-fives all over Southern California since 2010 (yes, back when skinny jeans were still cool). We’re a general construction company, which basically means “we fix, remodel, or build almost anything that isn’t a sandwich,” and our unofficial motto is “Hold my measuring tape, watch this.” While others promise the earth, we deliver th

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The Door Guy-Unlicensed Contractor

The Door Guy is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

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Wright Way Siding

Free estimates for siding and window installion. We garentee quality with a fast paced

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Anytime Windows and Doors
(*)(*)(*)(*)(*)4.8 (288 Reviews)
Beat Match PricesBeat Match Prices
Craftsmanship WarrantyCraftsmanship Warranty
Free ConsultationsFree Consultations
On-time CommitmentOn-time Commitment
Parts & Labor WarrantyParts & Labor Warranty

i’m Gil, the owner of Anytime Windows and Doors, and I wanted to take a moment to introduce myself. I started this business because I saw a real need for high-quality windows and patio doors that don’t just look great but also make homes more energy-efficient and comfortable. Whether you’re upgrading for style, better insulation, or to increase your home’s value, I’m here to help! As a local business, I take pride in serving our community with honest service, expert installation, and products built to last

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Fast Screens - Unlicensed Contractor
Coast Life Construction, Inc.

Coast Life Construction, Inc., is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 20 years of hands on experience to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

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Robert L. Swanson II General Contracting

Robert L Swanson General Contracting is committed to excellence in every aspect of our business. We specialize in Vinyl Window and Door Replacements, for over 42 years, we know what we are doing, and do it to perfection. I, Bob Swanson, the owner does all of the estimates and measuring for your new windows and doors, so you are not paying commission to a salesman. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. We sell and install only #1 rated Simonton Vinyl Win

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Sustainable Home Construction

In today�s time, it�s important to do what we can to save as much energy in our homes as possible, ultimately leading to saving money as well. Luckily, that�s where we come in. Sustainable Home Construction is an energy management company dedicated to helping you have a lower energy bill every month. Specializing in home energy audits, retrofits, and improvements, we offer a large variety of services including high efficiency HVAC systems, windows, ductwork, insulation, and so much more. You shouldn�t have

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Fast Windows & More

This is really why we are still growing and expanding under this economic crisis. This is not just a statement but a mindset. You will find that our windows and doors are some of the most stunning, best engineered and highest performing of any that is on the market today. We give you the highest level of customer assistance and service.

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About Window Pros in Diamond Bar, CA

Windows play a vital role in maintaining the comfort, energy efficiency, and aesthetic appeal of homes in Diamond Bar. With its warm Southern California climate and proximity to bustling urban areas, residents often prioritize high-performance window solutions that reduce heat transfer, block outside noise, and enhance curb appeal. As experienced window contractors serving the Diamond Bar community, we understand the unique challenges homeowners face when selecting and installing replacement windows tailored to local needs. From modern homes in the gated communities of Canyon Crest to older properties near Diamond Bar Boulevard, each project demands careful attention to the area’s specific requirements.

One key consideration in Diamond Bar is compliance with California’s Title 24 energy standards, which mandate energy-efficient windows to reduce environmental impact and utility costs. Double-pane windows with low-E coatings are particularly popular for meeting these regulations while keeping homes cooler during summer months. Additionally, homeowners often need to navigate local permitting through the City of Diamond Bar’s Building and Safety Division, especially for projects involving egress windows or tempered glass near walkways. We’re well-versed in these requirements and ensure every installation aligns with safety codes and HOA design guidelines where applicable.

Window replacement costs in Diamond Bar typically range from $650 to $1,200 per window installed, depending on materials like vinyl, fiberglass, or wood, as well as customizations for style and size. Whether you’re retrofitting windows in a mid-century home or upgrading to energy-efficient models in a new build, our team brings the expertise required to deliver results that stand the test of time.

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 Diamond Bar, 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 Diamond Bar 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 Diamond Bar?
  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 Dec 5, 2025, 8:56:55 AM