Capital Construction
Replacement Windows for the Boston Area & Beyond
No Interest & No Payments For 1-Year


High-Performance Replacement Window Installation in Boston, MA, CT, RI & NH
In Boston, Massachusetts, and across New England, choosing the right window is essential. High-performing replacement windows go a step beyond letting in light. They improve energy efficiency, reduce noise, and elevate curb appeal. With decades of experience serving New England neighborhoods, Capital Construction Contracting delivers window installation and replacement services recognized for quality, longevity, and expertise.
Why Invest in Replacement Windows in New England?
Our New England climate delivers plenty of surprises. From steamy summers to snowy winters, plus blustery coastal storms and temperature swings, windows here take a beating. Many local homes face challenges like:
Drafts and cold spots around window frames with insufficient or failing insulation
Sticking or swollen sashes caused by changing humidity
Glass condensation and moisture buildup, especially near salt air
Aging windows that compromise property value
Investing in replacement windows is a proactive way to keep New England homes comfortable and efficient. Modern windows offer superior insulation and noise reduction from busy streets, and come in styles that fit everything from classic brownstones to modern colonial homes, boosting resale value and increasing visual appeal.
Energy Efficiency & Cost Savings
Energy efficiency is critical in New England, where freezing winters and humid summers drive up home heating and cooling costs. Capital Construction’s windows feature:
Multi-pane glass for additional insulation
Precision-engineered tight seals that block air and moisture
ENERGY STAR-certified ratings for long-term savings
Upgrading to energy-efficient windows often leads to lower monthly utility bills and better year-round comfort. Homeowners from Boston to Providence trust our high-performance options for reliability and lasting value.

Maintenance & Window Repair Services
Sometimes a complete replacement isn’t needed right away. For those seeking to maximize their windows’ lifespan, Capital Construction offers comprehensive window maintenance. These services include:
Routine inspections to spot early signs of wear
Minor repairs, adjustments, and refinishing
Sealing and weatherproofing to address drafts or leaks
Ongoing support to keep windows performing at their best
For a practical guide on year-round upkeep, review the window maintenance checklist. It contains information about what you can do yourself to keep your windows operating at their full potential.
Window Brands & Options Tailored for Your Home
Homeowners in New England deserve windows designed for their architecture and weather. Capital Construction Contracting installs trusted brands known for lasting performance:
Alside Vinyl: Energy-efficient, durable, and available in a range of styles and finishes.
Weather Master Designer: Tough enough to tackle the region's most demanding conditions.
Velux skylights: Advanced skylight options, ideal for bringing natural light to attics or bathrooms
Our window replacement services extend beyond brand names. There are also numerous customization options that make it simple to match new windows with Boston’s brownstones, Cape Cod cottages, or New England colonials. Choose from different window types, colors, and hardware to create a seamless look. Learn more on our window customization page.
Window Brands

Alside brings New England homeowners quality windows that they can trust to stand up against the harsh northeastern climate. Their leading vinyl window products bring unmatched beauty and strength to any home, as they can be custom-fit to your needs.

There’s a reason why Velux has been successful for over 60 years! Velux skylights offer the best natural light and ventilation that these windows can offer. Our Velux skylights will improve the look and feel of your room while helping you to save on energy costs.
Capital’s Professional Installation & Replacement Process
Capital Construction Contracting values your time and your home. That’s why our window installation process is straightforward and convenient from start to finish. We follow these steps:
Personalized Consultation
A free consultation allows for a thorough discussion of goals, budget, and design preferences.
Precision Measurement and Ordering
Taking careful measurements prevents installation headaches and supports a secure, draft-free fit.
Installation
Skilled crews arrive on time, respect your property, and stay on schedule while minimizing disruption.
Quality Assurance & Cleanup
Every project is completed with a detailed inspection, thorough cleanup, and final walk-through.
Documentation and Warranties
Receive all warranty information and documentation for your records.
This proven approach delivers consistent results, from single-room window installations to full-home replacements. Our goal is to ensure peace of mind at every step, so we always provide you with clear, timely communication.
94% Guild Quality Recommendation Rate

Reviews, Awards, & What Sets Capital Construction Apart
With roots dating back to 2005, Capital Construction Contracting has built a reputation for quality work and dependable service. Backed by high marks on Guild Quality and an A+ Better Business Bureau rating, we stand behind every window project with a clear satisfaction guarantee. You can browse our project portfolio to see examples of recent window installation and replacement work in your area or read reviews from our past customers to learn what it’s like to work with us.
Frequently Asked Questions About Replacement Windows
Service Areas Across Massachusetts, NH, RI & CT
Capital Construction Contracting is proud to be your neighbor, serving Boston and the broader New England community from multiple local offices. Our service area covers:
Boston, MA, and its suburbs like Canton, Cambridge, Lowell, and Brockton
Manchester, NH
Woodbridge, CT
Providence, RI
Quick response and familiarity with local construction styles set the Capital Construction team apart in these cities and many more communities throughout the region. To find out if coverage includes your location, view our list of service areas.
Ready for Replacement Windows? Let’s Start Your Project
Ready to see how new windows can transform your MA, NH, RI, or CT home? Contact us to request a personalized quote from local window experts who prioritize clear communication, accurate pricing, and a seamless project experience. Discover why so many New England homeowners choose Capital Construction Contracting.
We've Built A Great Reputation 4.9 out of 5.0 stars based on 2,000+ reviews
See Our Project Portfolio
Client Testimonial
Home Remodeling Review
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I was immediately impressed with this company from when I first called them. They were informative, flexible to my schedule and a solid reputable company. I've dealt with a lot of different contractors and Capital Construction was a dream come true! From their office staff to production team and crew. Their crew done a fantastic job and finished sooner than projected. They followed all the covid guidelines and were amazing from start to finish. I 100% recommend this company to anyone. We are already planning our next spring project!
- Lydia S.
Special Offers
Call today to SAVE and become a Capital Preferred Customer!
We offer flexible finance options with low-payment, low-interest, and long-term periods.
What Our Customers Have To Say
We wanted to change our tube to a walk-in shower. The proposed change was well explained, and we decided to go with it. The work was completed in 1 day and was done cleanly and efficiently. No regrets
Our experience has been phenomenal from start to finish! From sales, office, project manager, and the great guys that installed our roof. Communication was outstanding all around. Our roof was finished in one day!Definitely recommend this company!
I don’t write reviews often but I must say that Michael Gagnon and his team did a great job with my project! I have an older home with a lot of character and they did an outstanding job with my roofing installation!
I couldn't be happier with Capital Construction! Their team was professional, efficient, and did an outstanding job on my new roof. The quality of their work is top-notch, and they left my property spotless. Highly recommend!
We are very pleased with the outcome! Our house’s curb appeal has gone up exponentially and we would definitely use Capital Construction again for other projects, and we would recommend this company to others. Thank you!





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