The Best Window Installers in Boulder, CO

Compare the highest-rated windows professionals in Boulder, Colorado. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Boulder Window & Door

4.8
(180 reviews)
Verified

A locally-owned and operated company specializing in high-performance window and door replacement for residential properties. They are widely recognized for their expertise in energy-efficient solutions and custom installations, catering to Boulder's specific climate and architectural styles, from modern to mountain contemporary.

5391 Western Ave, Boulder, CO 80301

Specialties & Features

Energy-efficient window replacement
Custom window solutions
New construction window installation

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

Renewal by Andersen of Denver & Boulder

4.7
(250 reviews)
Verified

As part of a national brand with a local franchise, they offer a strong reputation for quality and a streamlined process from consultation to installation. They specialize in their own proprietary, high-quality, energy-efficient windows and provide full-frame replacement services. Their brand recognition and warranty are significant draws.

6871 N Broadway St, Denver, CO 80221 (Serves Boulder extensively)

Specialties & Features

Full-frame window replacement
Energy-efficient Fibrex windows
Professional installation service

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#3

Clearview Window & Door

4.6
(90 reviews)
Verified

A dedicated local contractor known for personalized service and a focus on both window replacement and repair. They handle a wide range of products and are praised for their attention to detail and ability to work on unique or historic homes, offering solutions that balance aesthetics, security, and energy performance.

2511 17th St, Boulder, CO 80304

Specialties & Features

Residential window replacement and repair
Storm and security windows
Custom entry doors

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes

Why These Are the Top Windows Contractors in Boulder

The windows market in Boulder, Colorado, is characterized by high demand for quality and energy efficiency, driven by the city's environmental consciousness, strict building codes, and climate with cold winters and sunny days. The competition level is high, with a mix of well-regarded local specialists and established national brands serving the area. The average quality of providers is above the national average, reflecting the sophisticated demands of the homeowner base. Typical pricing for a full window replacement project is premium, often ranging from $800 to $1,500 per window installed, depending on the window type (e.g., double-pane vs. triple-pane gas-filled), frame material (vinyl, fiberglass, wood-clad), and the complexity of the installation. Repair services are more accessible, but overall, the market caters to homeowners investing in long-term property value and energy savings.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Boulder regulations and climate

Frequently Asked Questions About Windows in Boulder

Get answers to common questions about windows services in Boulder, Colorado.

1How does Boulder's climate and altitude affect my choice of replacement windows?

Boulder's high altitude, intense UV exposure, and significant temperature swings demand high-performance windows. We strongly recommend windows with Low-E coatings to protect interiors from sun damage and dual or triple-pane glass with argon gas fill for superior insulation against cold winters. Proper installation is also critical to withstand our high winds and prevent air infiltration that drives up heating costs.

2What is the typical cost range for a full home window replacement in Boulder, and what factors influence it?

For a standard-sized home in Boulder, a full replacement typically ranges from $15,000 to $30,000+, but this varies widely. Key cost factors include the window material (fiberglass and wood are premium), the complexity of your home's architecture, the need for custom sizing in older Boulder homes, and the specific energy efficiency features you select. Always get itemized quotes from local providers that include Boulder County permit fees, which are often required.

3When is the best time of year to schedule window installation in Boulder, and how long does the project take?

The ideal installation windows are during Boulder's shoulder seasons—late spring (May-June) and early fall (September-October)—to avoid peak summer heat and winter cold. For a full-home project, expect 2-5 days of work, depending on crew size and home complexity. Scheduling 4-8 weeks in advance is wise, as reputable local installers book quickly, especially before winter.

4Are there specific local permits or regulations in Boulder I need to be aware of for window replacement?

Yes, Boulder has strict building and energy codes. If you are replacing the entire window unit (frame and all), a building permit from the City of Boulder or Boulder County is usually required to ensure compliance with energy conservation codes (IRC/IRC). Additionally, if your home is in a historic district or has landmark designation, you will need design review approval before any changes can be made to the exterior.

5What should I look for when choosing a window installation contractor in Boulder?

Prioritize local, licensed, and insured contractors with extensive experience in Boulder's specific climate and regulatory environment. Check for strong references, reviews addressing Colorado's weather challenges, and membership in organizations like the Boulder County Builders Association. A trustworthy provider will handle permit acquisition, offer detailed warranties on both product and labor, and use proper flashing techniques suited for our freeze-thaw cycles and driving rains.