Windows, Siding & Doors Specialist

Serving the Chicago Suburbs & Surrounding Areas


Are you looking for a quality contractor for Buffalo Grove area replacement windows, vinyl siding or door installation? You have come to the right place! Providing the Buffalo Grove area with high-quality siding installation, window replacement, and door installation, the home improvement contractors at Custom Built Windows Inc are well-versed in handling your next project. In business since 1940, Custom Built Windows Inc technicians have the experience and skills to complete your project and exceed your expectations. Call Custom Built Windows Inc today for a free estimate.


Call for a FREE Quote

(847) 750-3817


❝Professional and friendly❞

★★★★★ - "Gary came to our house and demonstrated a few of the windows that we had in mind and explained the various pros and cons. He then let us make up our mind. No pressure. Pat and his crew installed the windows with care and professionalism. Cleaned up after themselves and treated my house and my wife and me with respect. He answered my questions promptly and truthfully. The whole crew treated our little dogs great. It was an enjoyable experience."

Author's Face

John H.


Top Quality Products & Materials

Our bottom line is your happiness. To that end, we purchase only quality materials. It doesn't make sense to hire the best technicians in the field, have them complete accurate measurements, and complete a job using sub-par materials. We want you to call us back to do more work; not to repair a faulty window or door! It is our guarantee that the crew at Custom Built Windows Inc will ensure that only the highest quality materials are used during the project.


Window Installation

All of the window installation technicians at Custom Built Windows Inc are highly trained and fully equipped to handle your project. From the first phone call to the final walk-through, you, your family, and your home will be treated with courtesy and respect. When the project is complete, we'll leave nothing behind except your gleaming new windows.

Door Installation

Whether you need a new entry door, patio door, or an interior door replacement, our experienced team provides flawless installations. We work with top-quality door materials from trusted brands, ensuring a perfect fit and long-lasting durability. Let us enhance your home's curb appeal, energy efficiency, and peace of mind with seamless door installations.



Gutter Installation

Protect your home from water damage with our expert gutter installation services. Our skilled technicians ensure a precise fit and proper sloping for efficient water flow. From seamless aluminum gutters to durable vinyl options, we've got you covered. Let us install a robust gutter system that channels rainwater away from your home, safeguarding your foundation, landscaping, and preventing costly repairs down the line.

Siding Services

Revitalize your home's exterior with our top-notch siding installation services. We offer a vast selection of premium siding materials to complement any architectural style. Transform your curb appeal and protect your biggest investment with our expert siding replacement. We stand behind our workmanship to deliver a flawless finish that enhances your home's value and aesthetic appeal for years to come.


Accurate Measurements That Save Time & Money

We understand and take to heart the “measure twice, cut once” mantra. Mistakes cost time and money. Whether we are providing windows, siding, doors or gutter installation to your Buffalo Grove home or business, rest assured that accuracy is key at Custom Built Windows Inc!

When you call Custom Built Windows Inc for your home improvement project, you can trust that:

  • Each opening is measured THREE times to ensure a precise fit
  • All products are also measured by a skilled technician to ensure that no detail is missed
  • We'll get it right the first time


Call for a FREE Quote

(847) 750-3817


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