Adding a new room is one of the most effective ways to increase living space without relocating. From extra bedrooms to expanded living rooms and home offices, our team creates custom additions tailored to your exact needs. A well-planned home addition improves household flow, increases usable space, and boosts property value. Our contractors handle all phases of planning, permitting, framing, roofing, windows, and final finishing ensuring your addition feels like it has always been part of your home.
McCarthy Exteriors understands these challenges and provides solutions tailored to the needs of Windham homeowners. Whether it’s a roof designed to resist heavy snow and ice, siding that can withstand moisture and strong winds, or gutter systems that manage runoff effectively, we deliver services that keep homes safe, attractive, and energy-efficient in every season.
At McCarthy Exteriors, we specialize in designing and building high-quality Accessory Dwelling Units (ADUs) that add functional living space, increase property value, and create flexible solutions for modern homeowners. Whether you’re looking to accommodate family members, generate rental income, or build a comfortable private retreat, our team delivers custom ADUs that blend seamlessly with your existing home and meet all local building requirements. From initial planning and design to full construction and finishing, we handle every detail with precision and craftsmanship. Our ADUs are built to be efficient, durable, and beautiful enhancing both your property and your lifestyle. Trust McCarthy Exteriors to bring your ADU vision to life with expert guidance, transparent communication, and exceptional results.
Not all additions are interior-focused. Many homeowners choose to add garages, sunrooms, mudrooms, or bonus rooms to increase convenience and overall livability. A new garage provides secure storage and protects vehicles, while a sunroom creates a bright retreat that can be enjoyed year-round. Bonus rooms offer flexibility ideal for playrooms, guest areas, or home gyms. No matter which type of space you envision, we build structurally sound, energy-efficient additions designed for longevity and daily enjoyment.
A great home addition doesn’t look like an addition, it looks like it’s always been part of the home. We take great care to match roofing materials, siding textures, color palettes, window styles, and architectural features. This ensures both visual continuity and structural integrity. Our skilled craftsmen use premium materials while aligning with local building codes and best practices. For exterior components such as new roofing or siding installation, our team is already equipped to provide full-service support through Exterior Services offerings
Homeowners and property managers across Brookline, Hollis, Milford, and nearby New Hampshire towns trust McCarthy Exteriors for their roofing, siding, windows, doors, and decking needs. With decades of experience, competitive pricing, and outstanding customer service, we consistently deliver exceptional results our clients can count on — every time.
Tyler and his crew were awesome to work with. They were efficient with all their work and materials and left a fantastic finished product. I would highly recommend them to any family or friends for any of their projects. I went with a Harie siding product on my home and was nervous of hiring a contractor that did not know what they were doing, but these guys put all my worries to rest on the first day.
I had a fantastic experience working with Tyler McCarthy from McCarthy Exteriors. Tyler maintained excellent communication throughout the entire project, always keeping me informed and promptly addressing any changes that arose. His attention to pricing was impressive, and he consistently provided me with options to manage costs effectively. Tyler’s depth of knowledge in the field was evident, and he confidently utilized his extensive resources to tackle any uncertainties that emerged.
From quote to completion, McCarthy Exteriors delivered top-notch service. Their team was punctual, detail-oriented, and respectful of my home. The new roof looks amazing and the entire process was stress-free. Truly a five-star experience.
Delivering expert roofing, siding, windows, doors decks and home addition needs with top-tier craftsmanship and care. We proudly serve homeowners across Brookline, Hollis, Milford, and nearby towns — offering fully licensed and insured service with free consultations and dependable results you can trust.
Enhance the safety, value, and curb appeal of your home with professional roofing, siding, window, door, and deck services. Whether it’s a full roof replacement or a custom-built deck, getting started early can help you avoid costly repairs later.
“At McCarthy Exteriors, we offer free, no-obligation estimates to help you plan your next home exterior project with confidence. Our fully licensed and insured team proudly serves Brookline, Hollis, Milford, Amherst, and surrounding NH communities — delivering high-quality results, every time.”
