Start Your Transformation

Window &
Door Installation

Architectural Windows for Modern Homes
Windows are more than openings — they’re architectural features that define light, space, and the entire exterior aesthetic of a home. At Modern Building Systems, we specialize in high‑end window and door installations that elevate both design and performance.
Start Your Transformation Our Services
25+
Experience in Colorado
Lifetime
Workmanship Warranty
1000+
Happy clients

Who We Serve

We work with homeowners, builders and architects who expect:

  • Premium window and door systems
  • Energy efficiency and long‑term durability
  • Meticulous installation and detailing
  • A white‑glove, design‑driven experience
Whether you’re replacing outdated units or upgrading the entire exterior envelope, we deliver solutions that enhance beauty, comfort, and value.
Precision Window Services

Premium Window Installation

We install windows that meet the highest standards of design, performance, and craftsmanship. Our focus is on products that complement modern and mountain‑modern architecture.

Brands We Trust

  • Kolbe Windows and Doors
  • Andersen Windows and Doors
  • Provia & more

Window Types We Offer

Each brand is selected for its ability to withstand Colorado’s climate while maintaining a luxury aesthetic.

  • Composite
  • Aluminum
  • Vinyl

Custom Entry Door Systems and Installation

Your doors set the tone for the entire home. We install premium entry, patio, and sliding systems that combine beauty, security, and performance.

We can help with

  • Custom Door Installation
  • Entry Doors
  • French Doors
  • Pivot Doors
  • Multi slide & Bi fold Door

Architectural Integration

This is where most contractors cut corners — and where we excel.
A window or door is only as good as the installation behind it. We ensure:
Perfect alignment and reveals Clean, modern trim details Proper flashing and waterproofing Seamless integration with siding, stone, and exterior finishes

Energy Efficiency & Performance

The result is a quieter, more comfortable, more efficient home.
Colorado’s climate demands products that perform. We install windows and doors with:
High-performance glass packages Superior air sealing Insulated frames Advanced weatherproofing systems
Our Process

Precision From Start to Finish

Consultation & Assessment

We evaluate your home’s architecture, existing openings, and performance needs.

Product Selection

We guide you through premium window and door options that match your style and budget.

Detailed Proposal

Every unit, material, and installation detail is documented clearly.

Expert Installation

Our craftsmen install with architectural precision — no shortcuts, no sloppy trim, no gaps.

Final Walkthrough & Quality Check

We verify operation, alignment, sealing, and finish quality on every unit.

Get Started Now

Let’s Build Something Exceptional together
Start Your Transformation
Why Homeowners Choose

Modern Building Systems

Architectural, design‑driven approach

Premium window and door products

Precision installation and detailing

Seamless integration with siding, stone, and decks

We don’t just replace windows. We elevate the entire exterior of your home.

Proudly Serving

The Entire Front Range

Based in Colorado Springs, Modern Building Systems serves homeowners throughout the Front Range. Our systems, staffing, and experience allow us to manage projects of varying scale while maintaining the same level of care and execution.
Whether you’re planning a single upgrade or a comprehensive exterior transformation, our approach remains the same: measured, professional, and detail-driven.

Vail Steamboat Springs Winter Park Breckenridge Keystone Monument Canyon City Salida Silverthorne Aurora parker Pueblo Castle Rock Estes park
What People Say

Words from our clients

Josh and Wes turned our backyard into something we actually want to show off.

We had a general idea of what we wanted, but Josh immediately saw the bigger picture. He and Wes designed a deck that feels like it was always meant to be part of our home. The craftsmanship from the MBS team is unreal — clean lines, flawless finishes, and not a single detail overlooked. It’s become our favorite place to unwind, and every guest comments on how high-end it feels.

MBS understood our vision better than we could explain it.

We told Josh we wanted something modern and minimal, and he came back with a design that exceeded anything we imagined. Wes walked us through materials and layout options with so much patience and clarity. The final deck looks like it belongs in a luxury resort. The MBS crew was respectful, tidy, and incredibly skilled. We use the space every day now.

The quality is on another level — you can tell Josh and Wes take pride in their work.

We’ve worked with plenty of contractors over the years, but MBS is in a completely different league. Josh checked in constantly, Wes oversaw every detail, and their in-house team built a deck that feels rock-solid and beautifully finished. No subcontractors, no excuses — just real craftsmanship. It’s rare to find a company that cares this much.

Our outdoor space feels like a luxury retreat thanks to MBS.

Our old deck was small and dated. Josh and Wes redesigned the entire layout and gave us a space that feels intentional, modern, and incredibly comfortable. The materials they recommended were perfect for our home’s style. The MBS team worked with such precision — even our neighbors commented on how professional they were. We’ve already hosted more gatherings in the last month than we did all last year.

Josh helped us choose windows that completely transformed our home.

We replaced every window in the house, and the difference is unbelievable. Josh walked us through the design options, and Wes made sure the installation was flawless. The MBS team treated our home with so much respect — no mess, no rushing, just careful, detailed work. The natural light and clean lines make the whole place feel brand new.  

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Rated 5/5 | Loved by our customers!

Let’s Build Something

Exceptional Together