Welcome to Landmark Building Company! Call for custom solutions: 214-727-0201
Aluminum Thermal Break Patio Doors
Sleek Frameless Garage Doors
Windows
Iron Doors

Aluminum Thermal Break Patio Doors

Transform Your Home with Quality Craftsmanship

Discover our extensive collection of premium doors and windows designed to enhance your home's beauty, security, and energy efficiency.

The Landmark stamp of approval promises quality products and customer experience.

Landmark offers top-quality windows and doors that are meticulously crafted to enhance and enrich your home's style, blending elegance with functionality.

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The perfect door for a grand entrance.

From sophisticated French doors to space-saving bifolds, sleek sliders, windows, garage doors, and fencing solutions, Landmark delivers exceptional products that blend outstanding performance with lasting durability and robust design.

Entry Doors

Entry Doors

Make a grand first impression with iron entry doors — where unmatched strength meets refined elegance. Designed to elevate curb appeal to offer a perfect blend of timeless design and enduring performance

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Sliding Doors

Sliding Doors

Effortless elegance. Sliding doors offer smooth operation with a modern, space-saving profile — ideal for tighter spaces without compromising light or view

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Bifold Doors

Bifold Doors

Unmatched openness. Bifold doors fold away neatly to create a wide, seamless connection between indoors and out — perfect for entertaining or enjoying panoramic views

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The perfect window for any view.

From smooth-gliding aluminum sliding windows to minimalist fixed panes, slim-profile casement windows, and space-enhancing folding designs, Landmark offers precision-engineered window solutions that deliver modern aesthetics, long-lasting durability, and exceptional performance.

Fixed Windows

Fixed Windows

Modern simplicity meets architectural elegance. Designed to flood your space with natural light while providing exceptional insulation, our fixed windows offer a sleek, unobstructed view that enhances both form and function

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Casement Windows

Casement Windows

Sleek and functional, casement windows offer effortless one-touch operation, unparalleled ventilation, and superior energy efficiency—combining modern aesthetics with durable performance to enhance both comfort and style

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Sliding Windows

Sliding Windows

Smooth and space-saving, sliding windows offer easy operation, expansive views, and a clean, modern look—perfect for maximizing light and airflow without compromising square footage

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Why Choose Landmark Building Co.

We're committed to providing exceptional products and services that exceed your expectations.

Quality Guarantee

Our products go through comprehensive inspections for quality assurance.

Delivery & Installation

Optional delivery and installation services available.

Reputation

We have over 20 years of experience in building and product development.

Customer Service

We provide unparalleled customer service from first contact to installation.

Frequently Asked Questions

Find answers to common questions about our products and services. Can't find what you're looking for? Contact us directly.